68 changed files with 1324 additions and 1209 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -35,8 +35,6 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 2
      - name: Setup Node.js environment
        uses: actions/setup-node@v2
        with:
--- a/README.md
+++ b/README.md
@ -65,12 +65,6 @@ turbo run build --filter=@quri/squiggle-components

 You can also run specific npm scripts for the package you're working on. See `packages/*/README.md` for the details.

-# NixOS users
-
-This repository requires the use of bundled binaries from node_modules, which
-are not linked statically. The easiest way to get them working is to enable
-[nix-ld](https://github.com/Mic92/nix-ld).
-
 # Contributing

 See `CONTRIBUTING.md`.
--- a/nix/squiggle-lang.nix
+++ b/nix/squiggle-lang.nix
@ -30,6 +30,16 @@ rec {
          patchelf --replace-needed libstdc++.so.6 $THE_SO linux/ninja.exe && echo "- replaced needed for linux/ninja.exe"
        '';
      };
+      bisect_ppx = {
+        buildInputs = common.which;
+        postInstall = ''
+          echo "PATCHELF'ING BISECT_PPX EXECUTABLE"
+          THE_LD=$(patchelf --print-interpreter $(which mkdir))
+          patchelf --set-interpreter $THE_LD bin/linux/ppx
+          patchelf --set-interpreter $THE_LD bin/linux/bisect-ppx-report
+          cp bin/linux/ppx ppx
+        '';
+      };
      gentype = {
        postInstall = ''
          mv gentype.exe ELFLESS-gentype.exe
--- a/nixos.sh
+++ b/nixos.sh
@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# This script is only relevant if you're rolling nixos.
+
+# Esy (a bisect_ppx dependency/build tool) is borked on nixos without using an FHS shell. https://github.com/esy/esy/issues/858
+# We need to patchelf rescript executables. https://github.com/NixOS/nixpkgs/issues/107375
+set -x
+
+fhsShellName="squiggle-fhs-development"
+fhsShellDotNix="{pkgs ? import <nixpkgs> {} }: (pkgs.buildFHSUserEnv { name = \"${fhsShellName}\"; targetPkgs = pkgs: [pkgs.yarn pkgs.glibc]; runScript = \"yarn\"; }).env"
+nix-shell - <<<"$fhsShellDotNix"
+
+theLd=$(patchelf --print-interpreter $(which mkdir))
+patchelf --set-interpreter $theLd ./node_modules/gentype/gentype.exe
+patchelf --set-interpreter $theLd ./node_modules/rescript/linux/*.exe
+patchelf --set-interpreter $theLd ./node_modules/bisect_ppx/ppx
+patchelf --set-interpreter $theLd ./node_modules/bisect_ppx/bisect-ppx-report
+theSo=$(find /nix/store/*$fhsShellName*/lib64 -name libstdc++.so.6 | head -n 1)
+patchelf --replace-needed libstdc++.so.6 $theSo ./node_modules/rescript/linux/ninja.exe
--- a/packages/cli/README.md
+++ b/packages/cli/README.md
@ -20,30 +20,3 @@ Runs compilation in the current directory and all of its subdirectories.
 ### `npx squiggle-cli-experimental watch`

 Watches `.squiggleU` files in the current directory (and subdirectories) and rebuilds them when they are saved. Note that this will _not_ rebuild files when their dependencies are changed, just when they are changed directly.
-
-## Further instructions
-
-The above requires having node, npm and npx. To install the first two, see [here](https://nodejs.org/en/), to install npx, run:
-
-```
-npm install -g npx
-```
-
-Alternatively, you can run the following without the need for npx:
-
-```
-npm install squiggle-cli-experimental
-node node_modules/squiggle-cli-experimental/index.js compile
-```
-
-or you can add a script to your `package.json`, like:
-
-```
- ...
- scripts: {
-  "compile": "squiggle-cli-experimental compile"
- }
- ...
-```
-
-This can be run with `npm run compile`. `npm` knows how to reach into the node_modules directly, so it's not necessary to specify that.
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@ -13,7 +13,7 @@
  },
  "license": "MIT",
  "dependencies": {
-    "chalk": "^5.1.0",
+    "chalk": "^5.0.1",
    "chokidar": "^3.5.3",
    "commander": "^9.4.1",
    "fs": "^0.0.1-security",
--- a/packages/components/package.json
+++ b/packages/components/package.json
@ -12,11 +12,11 @@
    "@react-hook/size": "^2.1.2",
    "@types/uuid": "^8.3.4",
    "clsx": "^1.2.1",
-    "framer-motion": "^7.5.3",
+    "framer-motion": "^7.5.1",
    "lodash": "^4.17.21",
    "react": "^18.1.0",
    "react-ace": "^10.1.0",
-    "react-hook-form": "^7.37.0",
+    "react-hook-form": "^7.36.1",
    "react-use": "^17.4.0",
    "react-vega": "^7.6.0",
    "uuid": "^9.0.0",
@ -41,7 +41,7 @@
    "@testing-library/user-event": "^14.4.3",
    "@types/jest": "^27.5.0",
    "@types/lodash": "^4.14.186",
-    "@types/node": "^18.8.3",
+    "@types/node": "^18.8.0",
    "@types/react": "^18.0.21",
    "@types/styled-components": "^5.1.26",
    "@types/uuid": "^8.3.4",
@ -49,8 +49,8 @@
    "canvas": "^2.10.1",
    "cross-env": "^7.0.3",
    "jest": "^29.0.3",
-    "jest-environment-jsdom": "^29.1.2",
-    "jsdom": "^20.0.1",
+    "jest-environment-jsdom": "^29.0.3",
+    "jsdom": "^20.0.0",
    "mini-css-extract-plugin": "^2.6.1",
    "postcss-cli": "^10.0.0",
    "postcss-import": "^15.0.0",
@ -60,11 +60,11 @@
    "react-scripts": "^5.0.1",
    "style-loader": "^3.3.1",
    "tailwindcss": "^3.1.8",
-    "ts-jest": "^29.0.3",
+    "ts-jest": "^29.0.2",
    "ts-loader": "^9.4.1",
    "tsconfig-paths-webpack-plugin": "^4.0.0",
    "typescript": "^4.8.4",
-    "web-vitals": "^3.0.3",
+    "web-vitals": "^3.0.2",
    "webpack": "^5.74.0",
    "webpack-cli": "^4.10.0",
    "webpack-dev-server": "^4.11.1"
--- a/packages/components/src/components/Alert.tsx
+++ b/packages/components/src/components/Alert.tsx
@ -24,7 +24,7 @@ export const Alert: React.FC<{
  children,
 }) => {
  return (
-    <div className={clsx("rounded-md p-4", backgroundColor)} role="status">
+    <div className={clsx("rounded-md p-4", backgroundColor)}>
      <div className="flex">
        <Icon
          className={clsx("h-5 w-5 flex-shrink-0", iconColor)}
--- a/packages/components/src/components/CodeEditor.tsx
+++ b/packages/components/src/components/CodeEditor.tsx
@ -55,7 +55,10 @@ export const CodeEditor: FC<CodeEditorProps> = ({
      editorProps={{
        $blockScrolling: true,
      }}
-      setOptions={{}}
+      setOptions={{
+        enableBasicAutocompletion: false,
+        enableLiveAutocompletion: false,
+      }}
      commands={[
        {
          name: "submit",
--- a/packages/components/src/components/SquiggleChart.tsx
+++ b/packages/components/src/components/SquiggleChart.tsx
@ -1,10 +1,5 @@
 import * as React from "react";
-import {
-  SqValue,
-  environment,
-  SqProject,
-  defaultEnvironment,
-} from "@quri/squiggle-lang";
+import { SqValue, environment, SqProject } from "@quri/squiggle-lang";
 import { useSquiggle } from "../lib/hooks";
 import { SquiggleViewer } from "./SquiggleViewer";
 import { JsImports } from "../lib/jsImports";
@ -71,6 +66,7 @@ type ProjectExecutionProps = {
 };
 const defaultOnChange = () => {};
 const defaultImports: JsImports = {};
+const defaultContinues: string[] = [];

 export const splitSquiggleChartSettings = (props: SquiggleChartProps) => {
  const {
@ -124,15 +120,24 @@ export const SquiggleChart: React.FC<SquiggleChartProps> = React.memo(
      width,
      height = 200,
      enableLocalSettings = false,
-      continues,
-      project,
-      environment,
+      continues = defaultContinues,
    } = props;

+    const p = React.useMemo(() => {
+      if (props.project) {
+        return props.project;
+      } else {
+        const p = SqProject.create();
+        if (props.environment) {
+          p.setEnvironment(props.environment);
+        }
+        return p;
+      }
+    }, [props.project, props.environment]);
+
    const resultAndBindings = useSquiggle({
-      environment,
      continues,
-      project,
+      project: p,
      code,
      jsImports,
      onChange,
@ -148,9 +153,7 @@ export const SquiggleChart: React.FC<SquiggleChartProps> = React.memo(
        height={height}
        distributionPlotSettings={distributionPlotSettings}
        chartSettings={chartSettings}
-        environment={
-          project ? project.getEnvironment() : environment ?? defaultEnvironment
-        }
+        environment={p.getEnvironment()}
        enableLocalSettings={enableLocalSettings}
      />
    );
--- a/packages/components/src/components/SquiggleEditor.tsx
+++ b/packages/components/src/components/SquiggleEditor.tsx
@ -16,7 +16,7 @@ const WrappedCodeEditor: React.FC<{
  setCode: (code: string) => void;
  errorLocations?: SqLocation[];
 }> = ({ code, setCode, errorLocations }) => (
-  <div className="border border-grey-200 p-2 m-4" data-testid="squiggle-editor">
+  <div className="border border-grey-200 p-2 m-4">
    <CodeEditor
      value={code}
      onChange={setCode}
@ -54,13 +54,17 @@ export const SquiggleEditor: React.FC<SquiggleEditorProps> = (props) => {
    width,
    height = 200,
    enableLocalSettings = false,
-    continues,
-    project,
  } = props;

+  const project = React.useMemo(() => {
+    const p = SqProject.create();
+    if (environment) {
+      p.setEnvironment(environment);
+    }
+    return p;
+  }, [environment]);
+
  const resultAndBindings = useSquiggle({
-    environment,
-    continues,
    code,
    project,
    jsImports,
--- a/packages/components/src/components/SquigglePlayground.tsx
+++ b/packages/components/src/components/SquigglePlayground.tsx
@ -182,7 +182,7 @@ const RunControls: React.FC<{
  const CurrentPlayIcon = isRunning ? RefreshIcon : PlayIcon;

  return (
-    <div className="flex space-x-1 items-center" data-testid="autorun-controls">
+    <div className="flex space-x-1 items-center">
      {autorunMode ? null : (
        <button onClick={run}>
          <CurrentPlayIcon
@ -251,8 +251,6 @@ export const SquigglePlayground: FC<PlaygroundProps> = ({
  onSettingsChange,
  showEditor = true,
  showShareButton = false,
-  continues,
-  project,
 }) => {
  const [code, setCode] = useMaybeControlledValue({
    value: controlledCode,
@ -307,10 +305,16 @@ export const SquigglePlayground: FC<PlaygroundProps> = ({
    executionId,
  } = useRunnerState(code);

+  const project = React.useMemo(() => {
+    const p = SqProject.create();
+    if (environment) {
+      p.setEnvironment(environment);
+    }
+    return p;
+  }, [environment]);
+
  const resultAndBindings = useSquiggle({
-    environment,
-    continues,
-    code: renderedCode,
+    code,
    project,
    jsImports: imports,
    executionId,
@ -351,7 +355,7 @@ export const SquigglePlayground: FC<PlaygroundProps> = ({
  const errorLocations = getErrorLocations(resultAndBindings.result);

  const firstTab = vars.showEditor ? (
-    <div className="border border-slate-200" data-testid="squiggle-editor">
+    <div className="border border-slate-200">
      <CodeEditor
        errorLocations={errorLocations}
        value={code}
@ -403,9 +407,7 @@ export const SquigglePlayground: FC<PlaygroundProps> = ({
      >
        {tabs}
      </div>
-      <div className="w-1/2 p-2 pl-4" data-testid="playground-result">
-        {squiggleChart}
-      </div>
+      <div className="w-1/2 p-2 pl-4">{squiggleChart}</div>
    </div>
  );

--- a/packages/components/src/components/SquiggleViewer/VariableBox.tsx
+++ b/packages/components/src/components/SquiggleViewer/VariableBox.tsx
@ -45,7 +45,7 @@ export const VariableBox: React.FC<VariableBoxProps> = ({
    : location.path.items[location.path.items.length - 1];

  return (
-    <div role={isTopLevel ? "status" : undefined}>
+    <div>
      <header className="inline-flex space-x-1">
        <Tooltip text={heading}>
          <span
--- a/packages/components/src/lib/hooks/useSquiggle.ts
+++ b/packages/components/src/lib/hooks/useSquiggle.ts
@ -4,18 +4,16 @@ import {
  SqProject,
  SqRecord,
  SqValue,
-  environment,
 } from "@quri/squiggle-lang";
 import { useEffect, useMemo } from "react";
 import { JsImports, jsImportsToSquiggleCode } from "../jsImports";
 import * as uuid from "uuid";

 type SquiggleArgs = {
-  environment?: environment;
  code: string;
  executionId?: number;
  jsImports?: JsImports;
-  project?: SqProject;
+  project: SqProject;
  continues?: string[];
  onChange?: (expr: SqValue | undefined, sourceName: string) => void;
 };
@ -29,25 +27,15 @@ const importSourceName = (sourceName: string) => "imports-" + sourceName;
 const defaultContinues = [];

 export const useSquiggle = (args: SquiggleArgs): ResultAndBindings => {
-  const project = useMemo(() => {
-    if (args.project) {
-      return args.project;
-    } else {
-      const p = SqProject.create();
-      if (args.environment) {
-        p.setEnvironment(args.environment);
-      }
-      return p;
-    }
-  }, [args.project, args.environment]);
-
  const sourceName = useMemo(() => uuid.v4(), []);

-  const env = project.getEnvironment();
+  const env = args.project.getEnvironment();
  const continues = args.continues || defaultContinues;

  const result = useMemo(
    () => {
+      const project = args.project;
+
      project.setSource(sourceName, args.code);
      let fullContinues = continues;
      if (args.jsImports && Object.keys(args.jsImports).length) {
@ -71,7 +59,7 @@ export const useSquiggle = (args: SquiggleArgs): ResultAndBindings => {
      args.executionId,
      sourceName,
      continues,
-      project,
+      args.project,
      env,
    ]
  );
@ -87,11 +75,11 @@ export const useSquiggle = (args: SquiggleArgs): ResultAndBindings => {

  useEffect(() => {
    return () => {
-      project.removeSource(sourceName);
-      if (project.getSource(importSourceName(sourceName)))
-        project.removeSource(importSourceName(sourceName));
+      args.project.removeSource(sourceName);
+      if (args.project.getSource(importSourceName(sourceName)))
+        args.project.removeSource(importSourceName(sourceName));
    };
-  }, [project, sourceName]);
+  }, [args.project, sourceName]);

  return result;
 };
--- a/packages/components/test/autorun.test.tsx
+++ b/packages/components/test/autorun.test.tsx
@ -1,55 +0,0 @@
-import { render, screen, waitFor, within } from "@testing-library/react";
-import userEvent from "@testing-library/user-event";
-import * as React from "react";
-import "@testing-library/jest-dom";
-import { SquigglePlayground } from "../src/index";
-
-test("Autorun is default", async () => {
-  render(<SquigglePlayground code="70*30" />);
-  await waitFor(() =>
-    expect(screen.getByTestId("playground-result")).toHaveTextContent("2100")
-  );
-});
-
-test("Autorun can be switched off", async () => {
-  const user = userEvent.setup();
-  render(<SquigglePlayground code="70*30" />);
-
-  expect(screen.getByTestId("autorun-controls")).toHaveTextContent("Autorun");
-
-  await waitFor(() =>
-    expect(screen.getByTestId("playground-result")).toHaveTextContent("2100")
-  );
-
-  await user.click(screen.getByText("Autorun")); // disable
-  expect(screen.getByTestId("autorun-controls")).toHaveTextContent("Paused");
-  expect(screen.getByTestId("autorun-controls")).not.toHaveTextContent(
-    "Autorun"
-  );
-
-  await user.click(screen.getByText("Paused")); // enable autorun again
-  expect(screen.getByTestId("autorun-controls")).toHaveTextContent("Autorun");
-
-  // we should replace the code here, but it's hard to update react-ace state via user events: https://github.com/securingsincity/react-ace/issues/923
-  // ...or replace react-ace with something else
-
-  // TODO:
-
-  /*
-  const editor = screen
-    .getByTestId("squiggle-editor")
-    .querySelector(".ace_editor") as HTMLElement;
-  editor.focus();
-  //   await user.clear(editor);
-  await userEvent.paste("40*40"); // https://github.com/securingsincity/react-ace/issues/923#issuecomment-755502696
-  screen.debug(editor);
-
-  // this makes the tests slower, but it's hard to test otherwise that the code _didn't_ execute
-  await new Promise((r) => setTimeout(r, 300));
-  expect(screen.getByTestId("playground-result")).toHaveTextContent("2100"); // still the old value
-
-  await waitFor(() =>
-    expect(screen.getByTestId("playground-result")).toHaveTextContent("1600")
-  );
-*/
-});
--- a/packages/components/test/basic.test.tsx
+++ b/packages/components/test/basic.test.tsx
@ -1,14 +1,9 @@
-import { render, screen } from "@testing-library/react";
+import { render } from "@testing-library/react";
 import React from "react";
 import "@testing-library/jest-dom";
-import {
-  SquiggleChart,
-  SquiggleEditor,
-  SquigglePlayground,
-} from "../src/index";
-import { SqProject } from "@quri/squiggle-lang";
+import { SquiggleChart } from "../src/index";

-test("Chart logs nothing on render", async () => {
+test("Logs nothing on render", async () => {
  const { unmount } = render(<SquiggleChart code={"normal(0, 1)"} />);
  unmount();

@ -16,38 +11,3 @@ test("Chart logs nothing on render", async () => {
  expect(console.warn).not.toBeCalled();
  expect(console.error).not.toBeCalled();
 });
-
-test("Editor logs nothing on render", async () => {
-  const { unmount } = render(<SquiggleEditor code={"normal(0, 1)"} />);
-  unmount();
-
-  expect(console.log).not.toBeCalled();
-  expect(console.warn).not.toBeCalled();
-  expect(console.error).not.toBeCalled();
-});
-
-test("Project dependencies work in editors", async () => {
-  const project = SqProject.create();
-
-  render(<SquiggleEditor code={"x = 1"} project={project} />);
-  const source = project.getSourceIds()[0];
-  const { container } = render(
-    <SquiggleEditor code={"x + 1"} project={project} continues={[source]} />
-  );
-  expect(container).toHaveTextContent("2");
-});
-
-test("Project dependencies work in playgrounds", async () => {
-  const project = SqProject.create();
-  project.setSource("depend", "x = 1");
-
-  render(
-    <SquigglePlayground
-      code={"x + 1"}
-      project={project}
-      continues={["depend"]}
-    />
-  );
-  // We must await here because SquigglePlayground loads results asynchronously
-  expect(await screen.findByRole("status")).toHaveTextContent("2");
-});
--- a/packages/squiggle-lang/.prettierignore
+++ b/packages/squiggle-lang/.prettierignore
@ -3,7 +3,7 @@ lib
 *.bs.js
 *.gen.tsx
 .nyc_output/
-coverage/
+_coverage/
 .cache/
 Reducer_Peggy_GeneratedParser.js
 ReducerProject_IncludeParser.js
--- a/packages/squiggle-lang/tests/Distributions/Dotwise_test.res
+++ b/packages/squiggle-lang/tests/Distributions/Dotwise_test.res
@ -32,29 +32,25 @@ describe("dotSubtract", () => {
 */
  Skip.test("mean of normal minus exponential (property)", () => {
    assert_(
-      property2(
-        float_(),
-        floatRange(1e-5, 1e5),
-        (mean, rate) => {
-          // We limit ourselves to stdev=1 so that the integral is trivial
-          let dotDifference = DistributionOperation.Constructors.pointwiseSubtract(
-            ~env,
-            mkNormal(mean, 1.0),
-            mkExponential(rate),
+      property2(float_(), floatRange(1e-5, 1e5), (mean, rate) => {
+        // We limit ourselves to stdev=1 so that the integral is trivial
+        let dotDifference = DistributionOperation.Constructors.pointwiseSubtract(
+          ~env,
+          mkNormal(mean, 1.0),
+          mkExponential(rate),
+        )
+        let meanResult = E.R2.bind(DistributionOperation.Constructors.mean(~env), dotDifference)
+        // according to algebra or random variables,
+        let meanAnalytical =
+          mean -.
+          SymbolicDist.Exponential.mean({rate: rate})->E.R2.toExn(
+            "On trusted input this should never happen",
          )
-          let meanResult = E.R2.bind(DistributionOperation.Constructors.mean(~env), dotDifference)
-          // according to algebra or random variables,
-          let meanAnalytical =
-            mean -.
-            SymbolicDist.Exponential.mean({rate: rate})->E.R2.toExn(
-              "On trusted input this should never happen",
-            )
-          switch meanResult {
-          | Ok(meanValue) => abs_float(meanValue -. meanAnalytical) /. abs_float(meanValue) < 1e-2 // 1% relative error
-          | Error(err) => err === DistributionTypes.OperationError(DivisionByZeroError)
-          }
-        },
-      ),
+        switch meanResult {
+        | Ok(meanValue) => abs_float(meanValue -. meanAnalytical) /. abs_float(meanValue) < 1e-2 // 1% relative error
+        | Error(err) => err === DistributionTypes.OperationError(DivisionByZeroError)
+        }
+      }),
    )
    pass
  })
--- a/packages/squiggle-lang/tests/Distributions/Invariants/AlgebraicCombination_test.res
+++ b/packages/squiggle-lang/tests/Distributions/Invariants/AlgebraicCombination_test.res
@ -40,60 +40,51 @@ let algebraicPower = algebraicPower(~env)

 describe("(Algebraic) addition of distributions", () => {
  describe("mean", () => {
-    test(
-      "normal(mean=5) + normal(mean=20)",
-      () => {
-        normalDist5
-        ->algebraicAdd(normalDist20)
+    test("normal(mean=5) + normal(mean=20)", () => {
+      normalDist5
+      ->algebraicAdd(normalDist20)
+      ->E.R2.fmap(DistributionTypes.Constructors.UsingDists.mean)
+      ->E.R2.fmap(run)
+      ->E.R2.fmap(toFloat)
+      ->E.R.toExn("Expected float", _)
+      ->expect
+      ->toBe(Some(2.5e1))
+    })
+
+    test("uniform(low=9, high=10) + beta(alpha=2, beta=5)", () => {
+      // let uniformMean = (9.0 +. 10.0) /. 2.0
+      // let betaMean = 1.0 /. (1.0 +. 5.0 /. 2.0)
+      let received =
+        uniformDist
+        ->algebraicAdd(betaDist)
        ->E.R2.fmap(DistributionTypes.Constructors.UsingDists.mean)
        ->E.R2.fmap(run)
        ->E.R2.fmap(toFloat)
        ->E.R.toExn("Expected float", _)
-        ->expect
-        ->toBe(Some(2.5e1))
-      },
-    )
-
-    test(
-      "uniform(low=9, high=10) + beta(alpha=2, beta=5)",
-      () => {
-        // let uniformMean = (9.0 +. 10.0) /. 2.0
-        // let betaMean = 1.0 /. (1.0 +. 5.0 /. 2.0)
-        let received =
-          uniformDist
-          ->algebraicAdd(betaDist)
-          ->E.R2.fmap(DistributionTypes.Constructors.UsingDists.mean)
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
-        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
-        // sometimes it works with ~digits=2.
-        | Some(x) => x->expect->toBeSoCloseTo(9.786831807237022, ~digits=1) // (uniformMean +. betaMean)
-        }
-      },
-    )
-    test(
-      "beta(alpha=2, beta=5) + uniform(low=9, high=10)",
-      () => {
-        // let uniformMean = (9.0 +. 10.0) /. 2.0
-        // let betaMean = 1.0 /. (1.0 +. 5.0 /. 2.0)
-        let received =
-          betaDist
-          ->algebraicAdd(uniformDist)
-          ->E.R2.fmap(DistributionTypes.Constructors.UsingDists.mean)
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
-        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
-        // sometimes it works with ~digits=2.
-        | Some(x) => x->expect->toBeSoCloseTo(9.784290207736126, ~digits=1) // (uniformMean +. betaMean)
-        }
-      },
-    )
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
+      // sometimes it works with ~digits=2.
+      | Some(x) => x->expect->toBeSoCloseTo(9.786831807237022, ~digits=1) // (uniformMean +. betaMean)
+      }
+    })
+    test("beta(alpha=2, beta=5) + uniform(low=9, high=10)", () => {
+      // let uniformMean = (9.0 +. 10.0) /. 2.0
+      // let betaMean = 1.0 /. (1.0 +. 5.0 /. 2.0)
+      let received =
+        betaDist
+        ->algebraicAdd(uniformDist)
+        ->E.R2.fmap(DistributionTypes.Constructors.UsingDists.mean)
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toExn("Expected float", _)
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
+      // sometimes it works with ~digits=2.
+      | Some(x) => x->expect->toBeSoCloseTo(9.784290207736126, ~digits=1) // (uniformMean +. betaMean)
+      }
+    })
  })
  describe("pdf", () => {
    // TEST IS WRONG. SEE STDEV ADDITION EXPRESSION.
@ -131,282 +122,247 @@ describe("(Algebraic) addition of distributions", () => {
        }
      },
    )
-    test(
-      "(normal(mean=10) + normal(mean=10)).pdf(1.9e1)",
-      () => {
-        let received =
-          normalDist20
-          ->Ok
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1.9e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        let calculated =
-          normalDist10
-          ->algebraicAdd(normalDist10)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1.9e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        switch received {
-        | None =>
-          "this branch occurs when the dispatch to Jstat on trusted input fails."
-          ->expect
-          ->toBe("never")
-        | Some(x) =>
-          switch calculated {
-          | None => "algebraicAdd has"->expect->toBe("failed")
-          | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=1)
-          }
-        }
-      },
-    )
-    test(
-      "(uniform(low=9, high=10) + beta(alpha=2, beta=5)).pdf(10)",
-      () => {
-        let received =
-          uniformDist
-          ->algebraicAdd(betaDist)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
+    test("(normal(mean=10) + normal(mean=10)).pdf(1.9e1)", () => {
+      let received =
+        normalDist20
+        ->Ok
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1.9e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      let calculated =
+        normalDist10
+        ->algebraicAdd(normalDist10)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1.9e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      switch received {
+      | None =>
+        "this branch occurs when the dispatch to Jstat on trusted input fails."
+        ->expect
+        ->toBe("never")
+      | Some(x) =>
+        switch calculated {
        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
-        // sometimes it works with ~digits=4.
-        // This value was calculated by a python script
-        | Some(x) => x->expect->toBeSoCloseTo(0.979023, ~digits=0)
+        | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=1)
        }
-      },
-    )
-    test(
-      "(beta(alpha=2, beta=5) + uniform(low=9, high=10)).pdf(10)",
-      () => {
-        let received =
-          betaDist
-          ->algebraicAdd(uniformDist)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
-        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic.
-        | Some(x) => x->expect->toBeSoCloseTo(0.979023, ~digits=0)
-        }
-      },
-    )
+      }
+    })
+    test("(uniform(low=9, high=10) + beta(alpha=2, beta=5)).pdf(10)", () => {
+      let received =
+        uniformDist
+        ->algebraicAdd(betaDist)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toExn("Expected float", _)
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
+      // sometimes it works with ~digits=4.
+      // This value was calculated by a python script
+      | Some(x) => x->expect->toBeSoCloseTo(0.979023, ~digits=0)
+      }
+    })
+    test("(beta(alpha=2, beta=5) + uniform(low=9, high=10)).pdf(10)", () => {
+      let received =
+        betaDist
+        ->algebraicAdd(uniformDist)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.pdf(d, 1e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toExn("Expected float", _)
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic.
+      | Some(x) => x->expect->toBeSoCloseTo(0.979023, ~digits=0)
+      }
+    })
  })
  describe("cdf", () => {
-    testAll(
-      "(normal(mean=5) + normal(mean=5)).cdf (imprecise)",
-      list{6e0, 8e0, 1e1, 1.2e1},
-      x => {
-        let received =
-          normalDist10
-          ->Ok
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, x))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        let calculated =
-          normalDist5
-          ->algebraicAdd(normalDist5)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, x))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
+    testAll("(normal(mean=5) + normal(mean=5)).cdf (imprecise)", list{6e0, 8e0, 1e1, 1.2e1}, x => {
+      let received =
+        normalDist10
+        ->Ok
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, x))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      let calculated =
+        normalDist5
+        ->algebraicAdd(normalDist5)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, x))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten

-        switch received {
-        | None =>
-          "this branch occurs when the dispatch to Jstat on trusted input fails."
-          ->expect
-          ->toBe("never")
-        | Some(x) =>
-          switch calculated {
-          | None => "algebraicAdd has"->expect->toBe("failed")
-          | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=0)
-          }
-        }
-      },
-    )
-    test(
-      "(normal(mean=10) + normal(mean=10)).cdf(1.25e1)",
-      () => {
-        let received =
-          normalDist20
-          ->Ok
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1.25e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        let calculated =
-          normalDist10
-          ->algebraicAdd(normalDist10)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1.25e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        switch received {
-        | None =>
-          "this branch occurs when the dispatch to Jstat on trusted input fails."
-          ->expect
-          ->toBe("never")
-        | Some(x) =>
-          switch calculated {
-          | None => "algebraicAdd has"->expect->toBe("failed")
-          | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=2)
-          }
-        }
-      },
-    )
-    test(
-      "(uniform(low=9, high=10) + beta(alpha=2, beta=5)).cdf(10)",
-      () => {
-        let received =
-          uniformDist
-          ->algebraicAdd(betaDist)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
+      switch received {
+      | None =>
+        "this branch occurs when the dispatch to Jstat on trusted input fails."
+        ->expect
+        ->toBe("never")
+      | Some(x) =>
+        switch calculated {
        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
-        // The value was calculated externally using a python script
-        | Some(x) => x->expect->toBeSoCloseTo(0.71148, ~digits=1)
+        | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=0)
        }
-      },
-    )
-    test(
-      "(beta(alpha=2, beta=5) + uniform(low=9, high=10)).cdf(10)",
-      () => {
-        let received =
-          betaDist
-          ->algebraicAdd(uniformDist)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1e1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
+      }
+    })
+    test("(normal(mean=10) + normal(mean=10)).cdf(1.25e1)", () => {
+      let received =
+        normalDist20
+        ->Ok
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1.25e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      let calculated =
+        normalDist10
+        ->algebraicAdd(normalDist10)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1.25e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      switch received {
+      | None =>
+        "this branch occurs when the dispatch to Jstat on trusted input fails."
+        ->expect
+        ->toBe("never")
+      | Some(x) =>
+        switch calculated {
        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
-        // The value was calculated externally using a python script
-        | Some(x) => x->expect->toBeSoCloseTo(0.71148, ~digits=1)
+        | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=2)
        }
-      },
-    )
+      }
+    })
+    test("(uniform(low=9, high=10) + beta(alpha=2, beta=5)).cdf(10)", () => {
+      let received =
+        uniformDist
+        ->algebraicAdd(betaDist)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toExn("Expected float", _)
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
+      // The value was calculated externally using a python script
+      | Some(x) => x->expect->toBeSoCloseTo(0.71148, ~digits=1)
+      }
+    })
+    test("(beta(alpha=2, beta=5) + uniform(low=9, high=10)).cdf(10)", () => {
+      let received =
+        betaDist
+        ->algebraicAdd(uniformDist)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.cdf(d, 1e1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toExn("Expected float", _)
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
+      // The value was calculated externally using a python script
+      | Some(x) => x->expect->toBeSoCloseTo(0.71148, ~digits=1)
+      }
+    })
  })

  describe("inv", () => {
-    testAll(
-      "(normal(mean=5) + normal(mean=5)).inv (imprecise)",
-      list{5e-2, 4.2e-3, 9e-3},
-      x => {
-        let received =
-          normalDist10
-          ->Ok
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, x))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        let calculated =
-          normalDist5
-          ->algebraicAdd(normalDist5)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, x))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
+    testAll("(normal(mean=5) + normal(mean=5)).inv (imprecise)", list{5e-2, 4.2e-3, 9e-3}, x => {
+      let received =
+        normalDist10
+        ->Ok
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, x))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      let calculated =
+        normalDist5
+        ->algebraicAdd(normalDist5)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, x))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten

-        switch received {
-        | None =>
-          "this branch occurs when the dispatch to Jstat on trusted input fails."
-          ->expect
-          ->toBe("never")
-        | Some(x) =>
-          switch calculated {
-          | None => "algebraicAdd has"->expect->toBe("failed")
-          | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=-1)
-          }
-        }
-      },
-    )
-    test(
-      "(normal(mean=10) + normal(mean=10)).inv(1e-1)",
-      () => {
-        let received =
-          normalDist20
-          ->Ok
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 1e-1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        let calculated =
-          normalDist10
-          ->algebraicAdd(normalDist10)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 1e-1))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toOption
-          ->E.O.flatten
-        switch received {
-        | None =>
-          "this branch occurs when the dispatch to Jstat on trusted input fails."
-          ->expect
-          ->toBe("never")
-        | Some(x) =>
-          switch calculated {
-          | None => "algebraicAdd has"->expect->toBe("failed")
-          | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=-1)
-          }
-        }
-      },
-    )
-    test(
-      "(uniform(low=9, high=10) + beta(alpha=2, beta=5)).inv(2e-2)",
-      () => {
-        let received =
-          uniformDist
-          ->algebraicAdd(betaDist)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 2e-2))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
+      switch received {
+      | None =>
+        "this branch occurs when the dispatch to Jstat on trusted input fails."
+        ->expect
+        ->toBe("never")
+      | Some(x) =>
+        switch calculated {
        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
-        // sometimes it works with ~digits=2.
-        | Some(x) => x->expect->toBeSoCloseTo(9.179319623146968, ~digits=0)
+        | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=-1)
        }
-      },
-    )
-    test(
-      "(beta(alpha=2, beta=5) + uniform(low=9, high=10)).inv(2e-2)",
-      () => {
-        let received =
-          betaDist
-          ->algebraicAdd(uniformDist)
-          ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 2e-2))
-          ->E.R2.fmap(run)
-          ->E.R2.fmap(toFloat)
-          ->E.R.toExn("Expected float", _)
-        switch received {
+      }
+    })
+    test("(normal(mean=10) + normal(mean=10)).inv(1e-1)", () => {
+      let received =
+        normalDist20
+        ->Ok
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 1e-1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      let calculated =
+        normalDist10
+        ->algebraicAdd(normalDist10)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 1e-1))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toOption
+        ->E.O.flatten
+      switch received {
+      | None =>
+        "this branch occurs when the dispatch to Jstat on trusted input fails."
+        ->expect
+        ->toBe("never")
+      | Some(x) =>
+        switch calculated {
        | None => "algebraicAdd has"->expect->toBe("failed")
-        // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
-        // sometimes it works with ~digits=2.
-        | Some(x) => x->expect->toBeSoCloseTo(9.190872365862756, ~digits=0)
+        | Some(y) => x->expect->toBeSoCloseTo(y, ~digits=-1)
        }
-      },
-    )
+      }
+    })
+    test("(uniform(low=9, high=10) + beta(alpha=2, beta=5)).inv(2e-2)", () => {
+      let received =
+        uniformDist
+        ->algebraicAdd(betaDist)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 2e-2))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toExn("Expected float", _)
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
+      // sometimes it works with ~digits=2.
+      | Some(x) => x->expect->toBeSoCloseTo(9.179319623146968, ~digits=0)
+      }
+    })
+    test("(beta(alpha=2, beta=5) + uniform(low=9, high=10)).inv(2e-2)", () => {
+      let received =
+        betaDist
+        ->algebraicAdd(uniformDist)
+        ->E.R2.fmap(d => DistributionTypes.Constructors.UsingDists.inv(d, 2e-2))
+        ->E.R2.fmap(run)
+        ->E.R2.fmap(toFloat)
+        ->E.R.toExn("Expected float", _)
+      switch received {
+      | None => "algebraicAdd has"->expect->toBe("failed")
+      // This is nondeterministic, we could be in a situation where ci fails but you click rerun and it passes, which is bad.
+      // sometimes it works with ~digits=2.
+      | Some(x) => x->expect->toBeSoCloseTo(9.190872365862756, ~digits=0)
+      }
+    })
  })
 })
--- a/packages/squiggle-lang/tests/Distributions/Invariants/Means_test.res
+++ b/packages/squiggle-lang/tests/Distributions/Invariants/Means_test.res
@ -87,22 +87,14 @@ describe("Means are invariant", () => {
    let testAddInvariant = (t1, t2) =>
      E.R.liftM2(testAdditionMean, t1, t2)->E.R.toExn("Means were not invariant", _)

-    testAll(
-      "with two of the same distribution",
-      distributions,
-      dist => {
-        testAddInvariant(dist, dist)
-      },
-    )
+    testAll("with two of the same distribution", distributions, dist => {
+      testAddInvariant(dist, dist)
+    })

-    testAll(
-      "with two different distributions",
-      pairsOfDifferentDistributions,
-      dists => {
-        let (dist1, dist2) = dists
-        testAddInvariant(dist1, dist2)
-      },
-    )
+    testAll("with two different distributions", pairsOfDifferentDistributions, dists => {
+      let (dist1, dist2) = dists
+      testAddInvariant(dist1, dist2)
+    })

    testAll(
      "with two different distributions in swapped order",
@ -124,22 +116,14 @@ describe("Means are invariant", () => {
    let testSubtractInvariant = (t1, t2) =>
      E.R.liftM2(testSubtractionMean, t1, t2)->E.R.toExn("Means were not invariant", _)

-    testAll(
-      "with two of the same distribution",
-      distributions,
-      dist => {
-        testSubtractInvariant(dist, dist)
-      },
-    )
+    testAll("with two of the same distribution", distributions, dist => {
+      testSubtractInvariant(dist, dist)
+    })

-    testAll(
-      "with two different distributions",
-      pairsOfDifferentDistributions,
-      dists => {
-        let (dist1, dist2) = dists
-        testSubtractInvariant(dist1, dist2)
-      },
-    )
+    testAll("with two different distributions", pairsOfDifferentDistributions, dists => {
+      let (dist1, dist2) = dists
+      testSubtractInvariant(dist1, dist2)
+    })

    testAll(
      "with two different distributions in swapped order",
@ -161,22 +145,14 @@ describe("Means are invariant", () => {
    let testMultiplicationInvariant = (t1, t2) =>
      E.R.liftM2(testMultiplicationMean, t1, t2)->E.R.toExn("Means were not invariant", _)

-    testAll(
-      "with two of the same distribution",
-      distributions,
-      dist => {
-        testMultiplicationInvariant(dist, dist)
-      },
-    )
+    testAll("with two of the same distribution", distributions, dist => {
+      testMultiplicationInvariant(dist, dist)
+    })

-    testAll(
-      "with two different distributions",
-      pairsOfDifferentDistributions,
-      dists => {
-        let (dist1, dist2) = dists
-        testMultiplicationInvariant(dist1, dist2)
-      },
-    )
+    testAll("with two different distributions", pairsOfDifferentDistributions, dists => {
+      let (dist1, dist2) = dists
+      testMultiplicationInvariant(dist1, dist2)
+    })

    testAll(
      "with two different distributions in swapped order",
--- a/packages/squiggle-lang/tests/Distributions/Scoring/KlDivergence_test.res
+++ b/packages/squiggle-lang/tests/Distributions/Scoring/KlDivergence_test.res
@ -17,9 +17,10 @@ describe("klDivergence: continuous -> continuous -> float", () => {
      let answer =
        uniformMakeR(lowAnswer, highAnswer)->E.R2.errMap(s => DistributionTypes.ArgumentError(s))
      let prediction =
-        uniformMakeR(lowPrediction, highPrediction)->E.R2.errMap(
-          s => DistributionTypes.ArgumentError(s),
-        )
+        uniformMakeR(
+          lowPrediction,
+          highPrediction,
+        )->E.R2.errMap(s => DistributionTypes.ArgumentError(s))
      // integral along the support of the answer of answer.pdf(x) times log of prediction.pdf(x) divided by answer.pdf(x) dx
      let analyticalKl = Js.Math.log((highPrediction -. lowPrediction) /. (highAnswer -. lowAnswer))
      let kl = E.R.liftJoin2(klDivergence, prediction, answer)
@ -182,9 +183,9 @@ describe("combineAlongSupportOfSecondArgument0", () => {
    let answer =
      uniformMakeR(lowAnswer, highAnswer)->E.R2.errMap(s => DistributionTypes.ArgumentError(s))
    let prediction =
-      uniformMakeR(lowPrediction, highPrediction)->E.R2.errMap(
-        s => DistributionTypes.ArgumentError(s),
-      )
+      uniformMakeR(lowPrediction, highPrediction)->E.R2.errMap(s => DistributionTypes.ArgumentError(
+        s,
+      ))
    let answerWrapped = E.R.fmap(a => run(FromDist(#ToDist(ToPointSet), a)), answer)
    let predictionWrapped = E.R.fmap(a => run(FromDist(#ToDist(ToPointSet), a)), prediction)

--- a/packages/squiggle-lang/tests/Distributions/Symbolic_test.res
+++ b/packages/squiggle-lang/tests/Distributions/Symbolic_test.res
@ -3,7 +3,7 @@ open Expect
 open TestHelpers

 // TODO: use Normal.make (but preferably after teh new validation dispatch is in)
-let mkNormal = (mean, stdev) => DistributionTypes.Symbolic(#Normal({mean, stdev}))
+let mkNormal = (mean, stdev) => DistributionTypes.Symbolic(#Normal({mean: mean, stdev: stdev}))

 describe("(Symbolic) normalize", () => {
  testAll("has no impact on normal distributions", list{-1e8, -1e-2, 0.0, 1e-4, 1e16}, mean => {
@ -47,7 +47,10 @@ describe("(Symbolic) mean", () => {
    tup => {
      let (low, medium, high) = tup
      let meanValue = run(
-        FromDist(#ToFloat(#Mean), DistributionTypes.Symbolic(#Triangular({low, medium, high}))),
+        FromDist(
+          #ToFloat(#Mean),
+          DistributionTypes.Symbolic(#Triangular({low: low, medium: medium, high: high})),
+        ),
      )
      meanValue->unpackFloat->expect->toBeCloseTo((low +. medium +. high) /. 3.0) // https://www.statology.org/triangular-distribution/
    },
@ -60,7 +63,7 @@ describe("(Symbolic) mean", () => {
    tup => {
      let (alpha, beta) = tup
      let meanValue = run(
-        FromDist(#ToFloat(#Mean), DistributionTypes.Symbolic(#Beta({alpha, beta}))),
+        FromDist(#ToFloat(#Mean), DistributionTypes.Symbolic(#Beta({alpha: alpha, beta: beta}))),
      )
      meanValue->unpackFloat->expect->toBeCloseTo(1.0 /. (1.0 +. beta /. alpha)) // https://en.wikipedia.org/wiki/Beta_distribution#Mean
    },
@ -81,8 +84,8 @@ describe("(Symbolic) mean", () => {
      let (mean, stdev) = tup
      let betaDistribution = SymbolicDist.Beta.fromMeanAndStdev(mean, stdev)
      let meanValue =
-        betaDistribution->E.R2.fmap(
-          d => run(FromDist(#ToFloat(#Mean), d->DistributionTypes.Symbolic)),
+        betaDistribution->E.R2.fmap(d =>
+          run(FromDist(#ToFloat(#Mean), d->DistributionTypes.Symbolic))
        )
      switch meanValue {
      | Ok(value) => value->unpackFloat->expect->toBeCloseTo(mean)
@ -97,7 +100,7 @@ describe("(Symbolic) mean", () => {
    tup => {
      let (mu, sigma) = tup
      let meanValue = run(
-        FromDist(#ToFloat(#Mean), DistributionTypes.Symbolic(#Lognormal({mu, sigma}))),
+        FromDist(#ToFloat(#Mean), DistributionTypes.Symbolic(#Lognormal({mu: mu, sigma: sigma}))),
      )
      meanValue->unpackFloat->expect->toBeCloseTo(Js.Math.exp(mu +. sigma ** 2.0 /. 2.0)) // https://brilliant.org/wiki/log-normal-distribution/
    },
@ -109,7 +112,7 @@ describe("(Symbolic) mean", () => {
    tup => {
      let (low, high) = tup
      let meanValue = run(
-        FromDist(#ToFloat(#Mean), DistributionTypes.Symbolic(#Uniform({low, high}))),
+        FromDist(#ToFloat(#Mean), DistributionTypes.Symbolic(#Uniform({low: low, high: high}))),
      )
      meanValue->unpackFloat->expect->toBeCloseTo((low +. high) /. 2.0) // https://en.wikipedia.org/wiki/Continuous_uniform_distribution#Moments
    },
--- a/packages/squiggle-lang/tests/Reducer/Reducer_Bindings/Reducer_Bindings_test.res
+++ b/packages/squiggle-lang/tests/Reducer/Reducer_Bindings/Reducer_Bindings_test.res
@ -33,18 +33,12 @@ describe("Bindings", () => {
    let value2 = Reducer_T.IEvNumber(5.)
    let extendedBindings = bindings->Bindings.extend->Bindings.set("value", value2)

-    test(
-      "get on extended",
-      () => {
-        expect(extendedBindings->Bindings.get("value")) == Some(value2)
-      },
-    )
+    test("get on extended", () => {
+      expect(extendedBindings->Bindings.get("value")) == Some(value2)
+    })

-    test(
-      "get on original",
-      () => {
-        expect(bindings->Bindings.get("value")) == Some(value)
-      },
-    )
+    test("get on original", () => {
+      expect(bindings->Bindings.get("value")) == Some(value)
+    })
  })
 })
--- a/packages/squiggle-lang/tests/Reducer/Reducer_Namespace_test.res
+++ b/packages/squiggle-lang/tests/Reducer/Reducer_Namespace_test.res
@ -40,23 +40,14 @@ describe("Namespace", () => {

    let nsMerged = Namespace.mergeMany([ns, ns1, ns2])

-    test(
-      "merge many 1",
-      () => {
-        expect(nsMerged->Namespace.get("x1")) == Some(x1)
-      },
-    )
-    test(
-      "merge many 2",
-      () => {
-        expect(nsMerged->Namespace.get("x4")) == Some(x4)
-      },
-    )
-    test(
-      "merge many 3",
-      () => {
-        expect(nsMerged->Namespace.get("value")) == Some(value)
-      },
-    )
+    test("merge many 1", () => {
+      expect(nsMerged->Namespace.get("x1")) == Some(x1)
+    })
+    test("merge many 2", () => {
+      expect(nsMerged->Namespace.get("x4")) == Some(x4)
+    })
+    test("merge many 3", () => {
+      expect(nsMerged->Namespace.get("value")) == Some(value)
+    })
  })
 })
--- a/packages/squiggle-lang/tests/Reducer/Reducer_Peggy/Reducer_Peggy_ToExpression_test.res
+++ b/packages/squiggle-lang/tests/Reducer/Reducer_Peggy/Reducer_Peggy_ToExpression_test.res
@ -75,32 +75,29 @@ describe("Peggy to Expression", () => {
    testToExpression("false ? 1 : 0", "false ? (1) : (0)", ~v="0", ())
    testToExpression("true ? 1 : false ? 2 : 0", "true ? (1) : (false ? (2) : (0))", ~v="1", ()) // nested ternary
    testToExpression("false ? 1 : false ? 2 : 0", "false ? (1) : (false ? (2) : (0))", ~v="0", ()) // nested ternary
-    describe(
-      "ternary bindings",
-      () => {
-        testToExpression(
-          // expression binding
-          "f(a) = a > 5 ? 1 : 0; f(6)",
-          "f = {|a| {(larger)(a, 5) ? (1) : (0)}}; (f)(6)",
-          ~v="1",
-          (),
-        )
-        testToExpression(
-          // when true binding
-          "f(a) = a > 5 ? a : 0; f(6)",
-          "f = {|a| {(larger)(a, 5) ? (a) : (0)}}; (f)(6)",
-          ~v="6",
-          (),
-        )
-        testToExpression(
-          // when false binding
-          "f(a) = a < 5 ? 1 : a; f(6)",
-          "f = {|a| {(smaller)(a, 5) ? (1) : (a)}}; (f)(6)",
-          ~v="6",
-          (),
-        )
-      },
-    )
+    describe("ternary bindings", () => {
+      testToExpression(
+        // expression binding
+        "f(a) = a > 5 ? 1 : 0; f(6)",
+        "f = {|a| {(larger)(a, 5) ? (1) : (0)}}; (f)(6)",
+        ~v="1",
+        (),
+      )
+      testToExpression(
+        // when true binding
+        "f(a) = a > 5 ? a : 0; f(6)",
+        "f = {|a| {(larger)(a, 5) ? (a) : (0)}}; (f)(6)",
+        ~v="6",
+        (),
+      )
+      testToExpression(
+        // when false binding
+        "f(a) = a < 5 ? 1 : a; f(6)",
+        "f = {|a| {(smaller)(a, 5) ? (1) : (a)}}; (f)(6)",
+        ~v="6",
+        (),
+      )
+    })
  })

  describe("if then else", () => {
--- a/packages/squiggle-lang/tests/Reducer/Reducer_TestHelpers.res
+++ b/packages/squiggle-lang/tests/Reducer/Reducer_TestHelpers.res
@ -22,7 +22,7 @@ let expectEvalError = (code: string) =>
  Expression.BackCompatible.evaluateString(code)
  ->Reducer_Value.toStringResult
  ->expect
-  ->toMatch("Error\\(")
+  ->toMatch("Error\(")

 let testParseToBe = (expr, answer) => test(expr, () => expectParseToBe(expr, answer))
 let testDescriptionParseToBe = (desc, expr, answer) =>
--- a/packages/squiggle-lang/tests/Reducer/Reducer_test.res
+++ b/packages/squiggle-lang/tests/Reducer/Reducer_test.res
@ -37,16 +37,14 @@ describe("eval", () => {
    test("index", () => expectEvalToBe("r = {a: 1}; r.a", "Ok(1)"))
    test("index", () => expectEvalToBe("r = {a: 1}; r.b", "Error(Record property not found: b)"))
    testEvalError("{a: 1}.b") // invalid syntax
-    test(
-      "always the same property ending",
-      () =>
-        expectEvalToBe(
-          `{
+    test("always the same property ending", () =>
+      expectEvalToBe(
+        `{
      a: 1, 
      b: 2,
    }`,
-          "Ok({a: 1,b: 2})",
-        ),
+        "Ok({a: 1,b: 2})",
+      )
    )
  })

--- a/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_1_test.res
+++ b/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_1_test.res
@ -11,34 +11,32 @@ describe("ReducerProject Tutorial", () => {
    /*
 Case "Running a single source". 
 */
-    test(
-      "run",
-      () => {
-        /* Let's start with running a single source and getting Result as well as the Bindings 
+    test("run", () => {
+      /* Let's start with running a single source and getting Result as well as the Bindings 
       First you need to create a project. A project is a collection of sources. 
       Project takes care of the dependencies between the sources, correct compilation and run order. 
       You can run any source in the project. It will be compiled and run if it hasn't happened already; otherwise already existing results will be presented.
       The dependencies will be automatically compiled and run. So you don't need to worry about that in a multi source project.
       In summary you issue a run command on the whole project or on a specific source to ensure that there is a result for that source.
 */
-        let project = Project.createProject()
-        /* Every source has a name. This is used for debugging, dependencies and error messages. */
-        project->Project.setSource("main", "1 + 2")
-        /* Let's run "main" source. */
-        project->Project.run("main")
-        /* Now you have a result for "main" source. 
+      let project = Project.createProject()
+      /* Every source has a name. This is used for debugging, dependencies and error messages. */
+      project->Project.setSource("main", "1 + 2")
+      /* Let's run "main" source. */
+      project->Project.run("main")
+      /* Now you have a result for "main" source. 
       Running one by one is necessary for UI to navigate among the sources and to see the results by source. 
       And you're free to run any source you want. 
       You will look at the results of this source and you don't want to run the others if not required.
 */

-        /* However, you could also run the whole project.
+      /* However, you could also run the whole project.
       If you have all the sources, you can always run the whole project. 
       Dependencies and recompiling on demand will be taken care of by the project. 
 */
-        project->Project.runAll
+      project->Project.runAll

-        /* Either with run or runAll you executed the project. 
+      /* Either with run or runAll you executed the project. 
       You can get the result of a specific source by calling getResult for that source. 
       You can get the bindings of a specific source by calling getBindings for that source. 
       If there is any runtime error, getResult will return the error.
@ -46,59 +44,49 @@ Case "Running a single source".
       Note that getResult returns None if the source has not been run.
       Getting None means you have forgotten to run the source.
 */
-        let result = project->Project.getResult("main")
-        let bindings = project->Project.getBindings("main")
+      let result = project->Project.getResult("main")
+      let bindings = project->Project.getBindings("main")

-        /* Let's display the result and bindings */
-        (result->Reducer_Value.toStringResult, bindings->Reducer_Value.toStringRecord)->expect ==
-          ("Ok(3)", "{}")
-        /* You've got 3 with empty bindings. */
-      },
-    )
+      /* Let's display the result and bindings */
+      (result->Reducer_Value.toStringResult, bindings->Reducer_Value.toStringRecord)->expect ==
+        ("Ok(3)", "{}")
+      /* You've got 3 with empty bindings. */
+    })

-    test(
-      "run summary",
-      () => {
-        let project = Project.createProject()
-        project->Project.setSource("main", "1 + 2")
-        project->Project.runAll
-        let result = project->Project.getResult("main")
-        let bindings = project->Project.getBindings("main")
-        /* Now you have external bindings and external result. */
-        (
-          result->Reducer_Value.toStringResult,
-          bindings->Reducer_T.IEvRecord->Reducer_Value.toString,
-        )->expect == ("Ok(3)", "{}")
-      },
-    )
+    test("run summary", () => {
+      let project = Project.createProject()
+      project->Project.setSource("main", "1 + 2")
+      project->Project.runAll
+      let result = project->Project.getResult("main")
+      let bindings = project->Project.getBindings("main")
+      /* Now you have external bindings and external result. */
+      (
+        result->Reducer_Value.toStringResult,
+        bindings->Reducer_T.IEvRecord->Reducer_Value.toString,
+      )->expect == ("Ok(3)", "{}")
+    })

-    test(
-      "run with an environment",
-      () => {
-        /* Running the source code like above allows you to set a custom environment */
-        let project = Project.createProject()
+    test("run with an environment", () => {
+      /* Running the source code like above allows you to set a custom environment */
+      let project = Project.createProject()

-        /* Optional. Set your custom environment anytime before running */
-        project->Project.setEnvironment(Reducer_Context.defaultEnvironment)
+      /* Optional. Set your custom environment anytime before running */
+      project->Project.setEnvironment(Reducer_Context.defaultEnvironment)

-        project->Project.setSource("main", "1 + 2")
-        project->Project.runAll
-        let result = project->Project.getResult("main")
-        let _bindings = project->Project.getBindings("main")
-        result->Reducer_Value.toStringResult->expect == "Ok(3)"
-      },
-    )
+      project->Project.setSource("main", "1 + 2")
+      project->Project.runAll
+      let result = project->Project.getResult("main")
+      let _bindings = project->Project.getBindings("main")
+      result->Reducer_Value.toStringResult->expect == "Ok(3)"
+    })

-    test(
-      "shortcut",
-      () => {
-        /* If you are running single source without includes and you don't need a custom environment, you can use the shortcut. */
-        /* Examples above was to prepare you for the multi source tutorial. */
-        let (result, bindings) = Project.evaluate("1+2")
-        (result->Reducer_Value.toStringResult, bindings->Reducer_Value.toStringRecord)->expect ==
-          ("Ok(3)", "{}")
-      },
-    )
+    test("shortcut", () => {
+      /* If you are running single source without includes and you don't need a custom environment, you can use the shortcut. */
+      /* Examples above was to prepare you for the multi source tutorial. */
+      let (result, bindings) = Project.evaluate("1+2")
+      (result->Reducer_Value.toStringResult, bindings->Reducer_Value.toStringRecord)->expect ==
+        ("Ok(3)", "{}")
+    })
  })
 })

--- a/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_2_multisource_test.res
+++ b/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_2_multisource_test.res
@ -10,104 +10,95 @@ describe("ReducerProject Tutorial", () => {
  describe("Multi source", () => {
    /*
     Case "Running multiple sources" */
-    test(
-      "Chaining",
-      () => {
-        let project = Project.createProject()
-        /* This time let's add 3 sources and chain them together */
-        project->Project.setSource("source1", "x=1")
+    test("Chaining", () => {
+      let project = Project.createProject()
+      /* This time let's add 3 sources and chain them together */
+      project->Project.setSource("source1", "x=1")

-        project->Project.setSource("source2", "y=x+1")
-        /* To run, source2 depends on source1 */
-        project->Project.setContinues("source2", ["source1"])
+      project->Project.setSource("source2", "y=x+1")
+      /* To run, source2 depends on source1 */
+      project->Project.setContinues("source2", ["source1"])

-        project->Project.setSource("source3", "z=y+1")
-        /* To run, source3 depends on source2 */
-        project->Project.setContinues("source3", ["source2"])
+      project->Project.setSource("source3", "z=y+1")
+      /* To run, source3 depends on source2 */
+      project->Project.setContinues("source3", ["source2"])

-        /* Now we can run the project */
-        project->Project.runAll
+      /* Now we can run the project */
+      project->Project.runAll

-        /* And let's check the result and bindings of source3 */
-        let result3 = project->Project.getResult("source3")
-        let bindings3 = project->Project.getBindings("source3")
+      /* And let's check the result and bindings of source3 */
+      let result3 = project->Project.getResult("source3")
+      let bindings3 = project->Project.getBindings("source3")

-        (result3->Reducer_Value.toStringResult, bindings3->Reducer_Value.toStringRecord)->expect ==
-          ("Ok(())", "{z: 3}")
-      },
-    )
+      (result3->Reducer_Value.toStringResult, bindings3->Reducer_Value.toStringRecord)->expect ==
+        ("Ok(())", "{z: 3}")
+    })

-    test(
-      "Depending",
-      () => {
-        /* Instead of chaining the sources, we could have a dependency tree */
-        /* The point here is that any source can depend on multiple sources */
-        let project = Project.createProject()
+    test("Depending", () => {
+      /* Instead of chaining the sources, we could have a dependency tree */
+      /* The point here is that any source can depend on multiple sources */
+      let project = Project.createProject()

-        /* This time source1 and source2 are not depending on anything */
-        project->Project.setSource("source1", "x=1")
-        project->Project.setSource("source2", "y=2")
+      /* This time source1 and source2 are not depending on anything */
+      project->Project.setSource("source1", "x=1")
+      project->Project.setSource("source2", "y=2")

-        project->Project.setSource("source3", "z=x+y")
-        /* To run, source3 depends on source1 and source3 together */
-        project->Project.setContinues("source3", ["source1", "source2"])
+      project->Project.setSource("source3", "z=x+y")
+      /* To run, source3 depends on source1 and source3 together */
+      project->Project.setContinues("source3", ["source1", "source2"])

-        /* Now we can run the project */
-        project->Project.runAll
+      /* Now we can run the project */
+      project->Project.runAll

-        /* And let's check the result and bindings of source3 */
-        let result3 = project->Project.getResult("source3")
-        let bindings3 = project->Project.getBindings("source3")
+      /* And let's check the result and bindings of source3 */
+      let result3 = project->Project.getResult("source3")
+      let bindings3 = project->Project.getBindings("source3")

-        (result3->Reducer_Value.toStringResult, bindings3->Reducer_Value.toStringRecord)->expect ==
-          ("Ok(())", "{z: 3}")
-      },
-    )
+      (result3->Reducer_Value.toStringResult, bindings3->Reducer_Value.toStringRecord)->expect ==
+        ("Ok(())", "{z: 3}")
+    })

-    test(
-      "Intro to including",
-      () => {
-        /* Though it would not be practical for a storybook, 
+    test("Intro to including", () => {
+      /* Though it would not be practical for a storybook, 
        let's write the same project above with includes.
        You will see that parsing includes is setting the dependencies the same way as before. */
-        let project = Project.createProject()
+      let project = Project.createProject()

-        /* This time source1 and source2 are not depending on anything */
-        project->Project.setSource("source1", "x=1")
-        project->Project.setSource("source2", "y=2")
+      /* This time source1 and source2 are not depending on anything */
+      project->Project.setSource("source1", "x=1")
+      project->Project.setSource("source2", "y=2")

-        project->Project.setSource(
-          "source3",
-          `
+      project->Project.setSource(
+        "source3",
+        `
      #include "source1"
      #include "source2"
      z=x+y`,
-        )
-        /* We need to parse the includes to set the dependencies */
-        project->Project.parseIncludes("source3")
+      )
+      /* We need to parse the includes to set the dependencies */
+      project->Project.parseIncludes("source3")

-        /* Now we can run the project */
-        project->Project.runAll
+      /* Now we can run the project */
+      project->Project.runAll

-        /* And let's check the result and bindings of source3 
+      /* And let's check the result and bindings of source3 
      This time you are getting all the variables because we are including the other sources 
      Behind the scenes parseIncludes is setting the dependencies */
-        let result3 = project->Project.getResult("source3")
-        let bindings3 = project->Project.getBindings("source3")
+      let result3 = project->Project.getResult("source3")
+      let bindings3 = project->Project.getBindings("source3")

-        (result3->Reducer_Value.toStringResult, bindings3->Reducer_Value.toStringRecord)->expect ==
-          ("Ok(())", "{z: 3}")
-        /*
+      (result3->Reducer_Value.toStringResult, bindings3->Reducer_Value.toStringRecord)->expect ==
+        ("Ok(())", "{z: 3}")
+      /*
      Doing it like this is too verbose for a storybook 
      But I hope you have seen the relation of setContinues and parseIncludes */
-        /*
+      /*
         Dealing with includes needs more. 
         - There are parse errors
         - There are cyclic includes
         - And the depended source1 and source2 is not already there in the project
         - If you knew the includes before hand there would not be point of the include directive.
         More on those on the next section. */
-      },
-    )
+    })
  })
 })
--- a/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_3_includes_test.res
+++ b/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_3_includes_test.res
@ -24,106 +24,93 @@ Here we will finally proceed to a real life scenario. */
    )
    /* We need to parse includes after changing the source */
    project->Project.parseIncludes("main")
-    test(
-      "getDependencies",
-      () => {
-        /* Parse includes has set the dependencies */
-        project->Project.getDependencies("main")->expect == ["common"]
-        /* If there were no includes than there would be no dependencies */
-        /* However if there was a syntax error at includes then would be no dependencies also */
-        /* Therefore looking at dependencies is not the right way to load includes */
-        /* getDependencies does not distinguish between setContinues or parseIncludes */
-      },
-    )
-    test(
-      "getIncludes",
-      () => {
-        /* Parse includes has set the includes */
-        switch project->Project.getIncludes("main") {
-        | Ok(includes) => includes->expect == ["common"]
-        | Error(err) => err->SqError.toString->fail
-        }
-        /* If the includes cannot be parsed then you get a syntax error.
+    test("getDependencies", () => {
+      /* Parse includes has set the dependencies */
+      project->Project.getDependencies("main")->expect == ["common"]
+      /* If there were no includes than there would be no dependencies */
+      /* However if there was a syntax error at includes then would be no dependencies also */
+      /* Therefore looking at dependencies is not the right way to load includes */
+      /* getDependencies does not distinguish between setContinues or parseIncludes */
+    })
+    test("getIncludes", () => {
+      /* Parse includes has set the includes */
+      switch project->Project.getIncludes("main") {
+      | Ok(includes) => includes->expect == ["common"]
+      | Error(err) => err->SqError.toString->fail
+      }
+      /* If the includes cannot be parsed then you get a syntax error.
      Otherwise you get the includes.
      If there is no syntax error then you can load that file and use setSource to add it to the project.
      And so on recursively... */
-      },
-    )
-    test(
-      "getDependents",
-      () => {
-        /* For any reason, you are able to query what other sources
+    })
+    test("getDependents", () => {
+      /* For any reason, you are able to query what other sources
        include or depend on the current source.
        But you don't need to use this to execute the projects.
        It is provided for completeness of information. */
-        project->Project.getDependents("main")->expect == []
-        /* Nothing is depending on or including main */
-      },
-    )
+      project->Project.getDependents("main")->expect == []
+      /* Nothing is depending on or including main */
+    })

-    describe(
-      "Real Like",
-      () => {
-        /* Now let's look at recursive and possibly cyclic includes */
-        /* There is no function provided to load the include files.
+    describe("Real Like", () => {
+      /* Now let's look at recursive and possibly cyclic includes */
+      /* There is no function provided to load the include files.
    Because we have no idea if will it be an ordinary function or will it use promises.
    Therefore one has to write a function to load sources recursively and and setSources
    while checking for dependencies */

-        /* Let's make a dummy loader */
-        let loadSource = (sourceName: string) =>
-          switch sourceName {
-          | "source1" => "x=1"
-          | "source2" => `
+      /* Let's make a dummy loader */
+      let loadSource = (sourceName: string) =>
+        switch sourceName {
+        | "source1" => "x=1"
+        | "source2" => `
            #include "source1"
            y=2`
-          | "source3" => `
+        | "source3" => `
            #include "source2"
            z=3`
-          | _ => `source ${sourceName} not found`->Js.Exn.raiseError
-          }
+        | _ => `source ${sourceName} not found`->Js.Exn.raiseError
+        }

-        /* let's recursively load the sources */
-        let rec loadIncludesRecursively = (project, sourceName, visited) => {
-          if visited->Js.Array2.includes(sourceName) {
-            /* Oh we have already visited this source. There is an include cycle */
-            "Cyclic include ${sourceName}"->Js.Exn.raiseError
-          } else {
-            let newVisited = Js.Array2.copy(visited)
-            let _ = newVisited->Js.Array2.push(sourceName)
-            /* Let's parse the includes and dive into them */
-            Project.parseIncludes(project, sourceName)
-            let rIncludes = project->Project.getIncludes(sourceName)
-            switch rIncludes {
-            /* Maybe there is an include syntax error */
-            | Error(err) => err->SqError.toString->Js.Exn.raiseError
+      /* let's recursively load the sources */
+      let rec loadIncludesRecursively = (project, sourceName, visited) => {
+        if visited->Js.Array2.includes(sourceName) {
+          /* Oh we have already visited this source. There is an include cycle */
+          "Cyclic include ${sourceName}"->Js.Exn.raiseError
+        } else {
+          let newVisited = Js.Array2.copy(visited)
+          let _ = newVisited->Js.Array2.push(sourceName)
+          /* Let's parse the includes and dive into them */
+          Project.parseIncludes(project, sourceName)
+          let rIncludes = project->Project.getIncludes(sourceName)
+          switch rIncludes {
+          /* Maybe there is an include syntax error */
+          | Error(err) => err->SqError.toString->Js.Exn.raiseError

-            | Ok(includes) =>
-              includes->Belt.Array.forEach(
-                newIncludeName => {
-                  /* We have got one of the new includes.
-                   Let's load it and add it to the project */
-                  let newSource = loadSource(newIncludeName)
-                  project->Project.setSource(newIncludeName, newSource)
-                  /* The new source is loaded and added to the project. */
-                  /* Of course the new source might have includes too. */
-                  /* Let's recursively load them */
-                  project->loadIncludesRecursively(newIncludeName, newVisited)
-                },
-              )
-            }
+          | Ok(includes) =>
+            includes->Belt.Array.forEach(newIncludeName => {
+              /* We have got one of the new includes.
+               Let's load it and add it to the project */
+              let newSource = loadSource(newIncludeName)
+              project->Project.setSource(newIncludeName, newSource)
+              /* The new source is loaded and added to the project. */
+              /* Of course the new source might have includes too. */
+              /* Let's recursively load them */
+              project->loadIncludesRecursively(newIncludeName, newVisited)
+            })
          }
        }
-        /* As we have a fake source loader and a recursive include handler,
-         We can not set up a real project */
+      }
+      /* As we have a fake source loader and a recursive include handler,
+       We can not set up a real project */

-        /* * Here starts our real life project! * */
+      /* * Here starts our real life project! * */

-        let project = Project.createProject()
+      let project = Project.createProject()

-        project->Project.setSource(
-          "main",
-          `
+      project->Project.setSource(
+        "main",
+        `
        #include "source1"
        #include "source2"
        #include "source3"
@ -131,43 +118,37 @@ Here we will finally proceed to a real life scenario. */
        b = doubleX
        a
        `,
-        )
-        /* Setting source requires parsing and loading the includes recursively */
-        project->loadIncludesRecursively("main", []) // Not visited yet
+      )
+      /* Setting source requires parsing and loading the includes recursively */
+      project->loadIncludesRecursively("main", []) // Not visited yet

-        /* Let's salt it more. Let's have another source in the project which also has includes */
-        /* doubleX includes source1 which is eventually included by main as well */
-        project->Project.setSource(
-          "doubleX",
-          `
+      /* Let's salt it more. Let's have another source in the project which also has includes */
+      /* doubleX includes source1 which is eventually included by main as well */
+      project->Project.setSource(
+        "doubleX",
+        `
        #include "source1"
        doubleX = x * 2
        `,
-        )
-        project->loadIncludesRecursively("doubleX", [])
-        /* Remember, any time you set a source, you need to load includes recursively */
+      )
+      project->loadIncludesRecursively("doubleX", [])
+      /* Remember, any time you set a source, you need to load includes recursively */

-        /* As doubleX is not included by main, it is not loaded recursively.
-         So we link it to the project as a dependency */
-        project->Project.setContinues("main", ["doubleX"])
+      /* As doubleX is not included by main, it is not loaded recursively.
+       So we link it to the project as a dependency */
+      project->Project.setContinues("main", ["doubleX"])

-        /* Let's run the project */
-        project->Project.runAll
-        let result = project->Project.getResult("main")
-        let bindings = project->Project.getBindings("main")
-        /* And see the result and bindings.. */
-        test(
-          "recursive includes",
-          () => {
-            (
-              result->Reducer_Value.toStringResult,
-              bindings->Reducer_Value.toStringRecord,
-            )->expect == ("Ok(6)", "{a: 6,b: 2}")
-            /* Everything as expected */
-          },
-        )
-      },
-    )
+      /* Let's run the project */
+      project->Project.runAll
+      let result = project->Project.getResult("main")
+      let bindings = project->Project.getBindings("main")
+      /* And see the result and bindings.. */
+      test("recursive includes", () => {
+        (result->Reducer_Value.toStringResult, bindings->Reducer_Value.toStringRecord)->expect ==
+          ("Ok(6)", "{a: 6,b: 2}")
+        /* Everything as expected */
+      })
+    })
  })

  describe("Includes myFile as myVariable", () => {
@ -182,20 +163,14 @@ Here we will finally proceed to a real life scenario. */
    `,
    )
    Project.parseIncludes(project, "main")
-    test(
-      "getDependencies",
-      () => {
-        Project.getDependencies(project, "main")->expect == ["common"]
-      },
-    )
-    test(
-      "getIncludes",
-      () => {
-        switch Project.getIncludes(project, "main") {
-        | Ok(includes) => includes->expect == ["common"]
-        | Error(err) => err->SqError.toString->fail
-        }
-      },
-    )
+    test("getDependencies", () => {
+      Project.getDependencies(project, "main")->expect == ["common"]
+    })
+    test("getIncludes", () => {
+      switch Project.getIncludes(project, "main") {
+      | Ok(includes) => includes->expect == ["common"]
+      | Error(err) => err->SqError.toString->fail
+      }
+    })
  })
 })
--- a/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_5_calling_functions.res
+++ b/packages/squiggle-lang/tests/ReducerProject/ReducerProject_tutorial_5_calling_functions.res
@ -30,9 +30,8 @@ describe("ReducerProject Tutorial", () => {
  })

  test("userResults", () => {
-    let userResultsAsString = Belt.Array.map(
-      userResults,
-      aResult => aResult->Reducer_Value.toStringResult,
+    let userResultsAsString = Belt.Array.map(userResults, aResult =>
+      aResult->Reducer_Value.toStringResult
    )
    userResultsAsString->expect == ["Ok(2)", "Ok(4)", "Ok(6)", "Ok(8)", "Ok(10)"]
  })
--- a/packages/squiggle-lang/tests/SquiggleLibrary/SquiggleLibrary_FunctionRegistryLibrary_test.res
+++ b/packages/squiggle-lang/tests/SquiggleLibrary/SquiggleLibrary_FunctionRegistryLibrary_test.res
@ -99,19 +99,15 @@ describe("FunctionRegistry Library", () => {
  })

  describe("Fn auto-testing", () => {
-    testAll(
-      "tests of validity",
-      examples,
-      r => {
-        expectEvalToBeOk(r)
-      },
-    )
+    testAll("tests of validity", examples, r => {
+      expectEvalToBeOk(r)
+    })

    testAll(
      "tests of type",
      E.A.to_list(
-        FunctionRegistry_Core.Registry.allExamplesWithFns(registry)->E.A2.filter(
-          ((fn, _)) => E.O.isSome(fn.output),
+        FunctionRegistry_Core.Registry.allExamplesWithFns(registry)->E.A2.filter(((fn, _)) =>
+          E.O.isSome(fn.output)
        ),
      ),
      ((fn, example)) => {
--- a/packages/squiggle-lang/tests/TestHelpers.res
+++ b/packages/squiggle-lang/tests/TestHelpers.res
@ -45,12 +45,12 @@ let toExtDist: option<DistributionTypes.genericDist> => DistributionTypes.generi
 let unpackFloat = x => x->toFloat->toExtFloat
 let unpackDist = y => y->toDist->toExtDist

-let mkNormal = (mean, stdev) => DistributionTypes.Symbolic(#Normal({mean, stdev}))
-let mkBeta = (alpha, beta) => DistributionTypes.Symbolic(#Beta({alpha, beta}))
+let mkNormal = (mean, stdev) => DistributionTypes.Symbolic(#Normal({mean: mean, stdev: stdev}))
+let mkBeta = (alpha, beta) => DistributionTypes.Symbolic(#Beta({alpha: alpha, beta: beta}))
 let mkExponential = rate => DistributionTypes.Symbolic(#Exponential({rate: rate}))
-let mkUniform = (low, high) => DistributionTypes.Symbolic(#Uniform({low, high}))
-let mkCauchy = (local, scale) => DistributionTypes.Symbolic(#Cauchy({local, scale}))
-let mkLognormal = (mu, sigma) => DistributionTypes.Symbolic(#Lognormal({mu, sigma}))
+let mkUniform = (low, high) => DistributionTypes.Symbolic(#Uniform({low: low, high: high}))
+let mkCauchy = (local, scale) => DistributionTypes.Symbolic(#Cauchy({local: local, scale: scale}))
+let mkLognormal = (mu, sigma) => DistributionTypes.Symbolic(#Lognormal({mu: mu, sigma: sigma}))
 let mkDelta = x => DistributionTypes.Symbolic(#Float(x))

 let normalMake = SymbolicDist.Normal.make
--- a/packages/squiggle-lang/bsconfig.json
+++ b/packages/squiggle-lang/bsconfig.json
@ -25,6 +25,7 @@
  ],
  "suffix": ".bs.js",
  "namespace": true,
+  "bs-dependencies": ["bisect_ppx"],
  "bs-dev-dependencies": [
    "@glennsl/rescript-jest",
    "rescript-fast-check",
@ -44,5 +45,8 @@
  "refmt": 3,
  "warnings": {
    "number": "+A-42-48-9-30-4"
-  }
+  },
+  "ppx-flags": [
+    ["../../node_modules/bisect_ppx/ppx", "--exclude-files", ".*_test\\.res$$"]
+  ]
 }
--- a/packages/squiggle-lang/jest.config.js
+++ b/packages/squiggle-lang/jest.config.js
@ -2,6 +2,9 @@
 module.exports = {
  preset: "ts-jest",
  testEnvironment: "node",
+  setupFilesAfterEnv: [
+    "<rootdir>/../../node_modules/bisect_ppx/src/runtime/js/jest.bs.js",
+  ],
  testPathIgnorePatterns: [
    ".*Fixtures.bs.js",
    "/node_modules/",
--- a/packages/squiggle-lang/package.json
+++ b/packages/squiggle-lang/package.json
@ -22,8 +22,12 @@
    "test:rescript": "jest --modulePathIgnorePatterns=__tests__/TS/*",
    "test:watch": "jest --watchAll",
    "test:fnRegistry": "jest __tests__/SquiggleLibrary/SquiggleLibrary_FunctionRegistryLibrary_test.bs.js",
-    "coverage:local": "jest --coverage && echo && echo 'Open ./coverage/lcov-report/index.html to see the detailed report.'",
-    "coverage": "jest --coverage && codecov",
+    "coverage:rescript:local": "rm -f *.coverage && yarn clean && BISECT_ENABLE=yes yarn build && yarn test:rescript && bisect-ppx-report html",
+    "coverage:ts:local": "yarn clean && yarn build && nyc --reporter=lcov yarn test:ts",
+    "coverage:rescript": "yarn clean && BISECT_ENABLE=yes yarn build:rescript && yarn test:rescript && bisect-ppx-report send-to Codecov",
+    "coverage:ts": "yarn coverage:ts:local && codecov",
+    "coverage": "yarn coverage:ts && yarn coverage:rescript",
+    "coverage:local": "yarn coverage:ts:local && yarn coverage:rescript:local",
    "lint:rescript": "./lint.sh",
    "lint:prettier": "prettier --check .",
    "lint": "yarn lint:rescript && yarn lint:prettier",
@ -39,7 +43,7 @@
  ],
  "author": "Quantified Uncertainty Research Institute",
  "dependencies": {
-    "@rescript/std": "^10.0.0",
+    "@rescript/std": "^9.1.4",
    "@stdlib/stats": "^0.0.13",
    "jstat": "^1.9.5",
    "lodash": "^4.17.21",
@ -48,20 +52,24 @@
  },
  "devDependencies": {
    "@glennsl/rescript-jest": "^0.9.2",
+    "@istanbuljs/nyc-config-typescript": "^1.0.2",
    "@types/jest": "^27.5.0",
-    "chalk": "^5.1.0",
+    "babel-plugin-transform-es2015-modules-commonjs": "^6.26.2",
+    "bisect_ppx": "^2.7.1",
+    "chalk": "^5.0.1",
    "codecov": "^3.8.3",
    "fast-check": "^3.1.4",
    "gentype": "^4.5.0",
    "jest": "^27.5.1",
    "moduleserve": "^0.9.1",
+    "nyc": "^15.1.0",
    "peggy": "^2.0.1",
    "prettier": "^2.7.1",
    "reanalyze": "^2.23.0",
-    "rescript": "^10.0.0",
+    "rescript": "^9.1.4",
    "rescript-fast-check": "^1.1.1",
    "rescript-js-map": "^1.1.0",
-    "ts-jest": "^29.0.3",
+    "ts-jest": "^27.1.4",
    "ts-loader": "^9.4.1",
    "ts-node": "^10.9.1",
    "typescript": "^4.8.4",
--- a/packages/squiggle-lang/src/rescript/Distributions/DistributionOperation.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/DistributionOperation.res
@ -141,7 +141,6 @@ let rec run = (~env: env, functionCallInfo: functionCallInfo): outputType => {
        Js.log2("Console log requested: ", dist)
        Dist(dist)
      }
-
    | #ToDist(Normalize) => dist->GenericDist.normalize->Dist
    | #ToScore(LogScore(answer, prior)) =>
      GenericDist.Score.logScore(~estimate=dist, ~answer, ~prior, ~env)
--- a/packages/squiggle-lang/src/rescript/Distributions/GenericDist.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/GenericDist.res
@ -99,7 +99,6 @@ let toFloatOperation = (
        }
      }
    }
-
  | (#Stdev | #Variance | #Mode) as op =>
    switch t {
    | SampleSet(s) =>
@ -130,7 +129,7 @@ let toPointSet = (
    SampleSetDist.toPointSetDist(
      ~samples=r,
      ~samplingInputs={
-        sampleCount,
+        sampleCount: sampleCount,
        outputXYPoints: xyPointLength,
        pointSetDistLength: xyPointLength,
        kernelWidth: None,
@ -428,7 +427,6 @@ module AlgebraicCombination = {
          ~toSampleSetFn,
        )
      }
-
    | (None, AsMonteCarlo) =>
      StrategyCallOnValidatedInputs.monteCarlo(toSampleSetFn, arithmeticOperation, t1, t2)
    | (None, AsSymbolic) =>
@ -445,7 +443,6 @@ module AlgebraicCombination = {
            )}`
          Error(RequestedStrategyInvalidError(errString))
        }
-
      | Some(convOp) => StrategyCallOnValidatedInputs.convolution(toPointSetFn, convOp, t1, t2)
      }
    }
--- a/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/AlgebraicShapeCombination.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/AlgebraicShapeCombination.res
@ -69,7 +69,7 @@ let toDiscretePointMassesFromTriangulars = (
      ()
    }

-    {n: n - 2, masses, means, variances}
+    {n: n - 2, masses: masses, means: means, variances: variances}
  } else {
    for i in 1 to n - 2 {
      // area of triangle = width * height / 2
@ -91,7 +91,7 @@ let toDiscretePointMassesFromTriangulars = (
      ) |> ignore
      ()
    }
-    {n: n - 2, masses, means, variances}
+    {n: n - 2, masses: masses, means: means, variances: variances}
  }
 }

@ -184,7 +184,7 @@ let toDiscretePointMassesFromDiscrete = (s: PointSetTypes.xyShape): pointMassesW
  let means: array<float> = Belt.Array.makeBy(n, i => xs[i])
  let variances: array<float> = Belt.Array.makeBy(n, _ => 0.0)

-  {n, masses, means, variances}
+  {n: n, masses: masses, means: means, variances: variances}
 }

 type argumentPosition = First | Second
--- a/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/Continuous.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/Continuous.res
@ -45,16 +45,16 @@ module Analysis = {
 let getShape = (t: t) => t.xyShape
 let interpolation = (t: t) => t.interpolation
 let make = (~interpolation=#Linear, ~integralSumCache=None, ~integralCache=None, xyShape): t => {
-  xyShape,
-  interpolation,
-  integralSumCache,
-  integralCache,
+  xyShape: xyShape,
+  interpolation: interpolation,
+  integralSumCache: integralSumCache,
+  integralCache: integralCache,
 }
 let shapeMap = (fn, {xyShape, interpolation, integralSumCache, integralCache}: t): t => {
  xyShape: fn(xyShape),
-  interpolation,
-  integralSumCache,
-  integralCache,
+  interpolation: interpolation,
+  integralSumCache: integralSumCache,
+  integralCache: integralCache,
 }
 let lastY = (t: t) => t |> getShape |> XYShape.T.lastY
 let oShapeMap = (fn, {xyShape, interpolation, integralSumCache, integralCache}: t): option<
@ -135,10 +135,10 @@ let shapeFn = (fn, t: t) => t |> getShape |> fn

 let updateIntegralSumCache = (integralSumCache, t: t): t => {
  ...t,
-  integralSumCache,
+  integralSumCache: integralSumCache,
 }

-let updateIntegralCache = (integralCache, t: t): t => {...t, integralCache}
+let updateIntegralCache = (integralCache, t: t): t => {...t, integralCache: integralCache}

 let sum = (
  ~integralSumCachesFn: (float, float) => option<float>=(_, _) => None,
--- a/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/Discrete.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/Discrete.res
@ -4,14 +4,14 @@ open Distributions
 type t = PointSetTypes.discreteShape

 let make = (~integralSumCache=None, ~integralCache=None, xyShape): t => {
-  xyShape,
-  integralSumCache,
-  integralCache,
+  xyShape: xyShape,
+  integralSumCache: integralSumCache,
+  integralCache: integralCache,
 }
 let shapeMap = (fn, {xyShape, integralSumCache, integralCache}: t): t => {
  xyShape: fn(xyShape),
-  integralSumCache,
-  integralCache,
+  integralSumCache: integralSumCache,
+  integralCache: integralCache,
 }
 let getShape = (t: t) => t.xyShape
 let oShapeMap = (fn, {xyShape, integralSumCache, integralCache}: t): option<t> =>
@ -63,12 +63,12 @@ let reduce = (

 let updateIntegralSumCache = (integralSumCache, t: t): t => {
  ...t,
-  integralSumCache,
+  integralSumCache: integralSumCache,
 }

 let updateIntegralCache = (integralCache, t: t): t => {
  ...t,
-  integralCache,
+  integralCache: integralCache,
 }

 /* This multiples all of the data points together and creates a new discrete distribution from the results.
--- a/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/Mixed.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/Mixed.res
@ -4,10 +4,10 @@ open Distributions

 type t = PointSetTypes.mixedShape
 let make = (~integralSumCache=None, ~integralCache=None, ~continuous, ~discrete): t => {
-  continuous,
-  discrete,
-  integralSumCache,
-  integralCache,
+  continuous: continuous,
+  discrete: discrete,
+  integralSumCache: integralSumCache,
+  integralCache: integralCache,
 }

 let totalLength = (t: t): int => {
@ -35,7 +35,7 @@ let toDiscrete = ({discrete}: t) => Some(discrete)

 let updateIntegralCache = (integralCache, t: t): t => {
  ...t,
-  integralCache,
+  integralCache: integralCache,
 }

 let combinePointwise = (
--- a/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/PointSetTypes.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/PointSetDist/PointSetTypes.res
@ -79,8 +79,8 @@ module MixedPoint = {
  type t = mixedPoint
  let toContinuousValue = (t: t) => t.continuous
  let toDiscreteValue = (t: t) => t.discrete
-  let makeContinuous = (continuous: float): t => {continuous, discrete: 0.0}
-  let makeDiscrete = (discrete: float): t => {continuous: 0.0, discrete}
+  let makeContinuous = (continuous: float): t => {continuous: continuous, discrete: 0.0}
+  let makeDiscrete = (discrete: float): t => {continuous: 0.0, discrete: discrete}

  let fmap = (fn: float => float, t: t) => {
    continuous: fn(t.continuous),
--- a/packages/squiggle-lang/src/rescript/Distributions/SymbolicDist/SymbolicDist.res
+++ b/packages/squiggle-lang/src/rescript/Distributions/SymbolicDist/SymbolicDist.res
@ -7,7 +7,7 @@ module Normal = {
  type t = normal
  let make = (mean: float, stdev: float): result<symbolicDist, string> =>
    stdev > 0.0
-      ? Ok(#Normal({mean, stdev}))
+      ? Ok(#Normal({mean: mean, stdev: stdev}))
      : Error("Standard deviation of normal distribution must be larger than 0")
  let pdf = (x, t: t) => Jstat.Normal.pdf(x, t.mean, t.stdev)
  let cdf = (x, t: t) => Jstat.Normal.cdf(x, t.mean, t.stdev)
@ -15,7 +15,7 @@ module Normal = {
  let from90PercentCI = (low, high) => {
    let mean = E.A.Floats.mean([low, high])
    let stdev = (high -. low) /. (2. *. normal95confidencePoint)
-    #Normal({mean, stdev})
+    #Normal({mean: mean, stdev: stdev})
  }
  let inv = (p, t: t) => Jstat.Normal.inv(p, t.mean, t.stdev)
  let sample = (t: t) => Jstat.Normal.sample(t.mean, t.stdev)
@ -25,12 +25,12 @@ module Normal = {
  let add = (n1: t, n2: t) => {
    let mean = n1.mean +. n2.mean
    let stdev = Js.Math.sqrt(n1.stdev ** 2. +. n2.stdev ** 2.)
-    #Normal({mean, stdev})
+    #Normal({mean: mean, stdev: stdev})
  }
  let subtract = (n1: t, n2: t) => {
    let mean = n1.mean -. n2.mean
    let stdev = Js.Math.sqrt(n1.stdev ** 2. +. n2.stdev ** 2.)
-    #Normal({mean, stdev})
+    #Normal({mean: mean, stdev: stdev})
  }

  // TODO: is this useful here at all? would need the integral as well ...
@ -38,7 +38,7 @@ module Normal = {
    let mean =
      (n1.mean *. n2.stdev ** 2. +. n2.mean *. n1.stdev ** 2.) /. (n1.stdev ** 2. +. n2.stdev ** 2.)
    let stdev = 1. /. (1. /. n1.stdev ** 2. +. 1. /. n2.stdev ** 2.)
-    #Normal({mean, stdev})
+    #Normal({mean: mean, stdev: stdev})
  }

  let operate = (operation: Operation.Algebraic.t, n1: t, n2: t) =>
@ -88,7 +88,7 @@ module Cauchy = {
  type t = cauchy
  let make = (local, scale): result<symbolicDist, string> =>
    scale > 0.0
-      ? Ok(#Cauchy({local, scale}))
+      ? Ok(#Cauchy({local: local, scale: scale}))
      : Error("Cauchy distribution scale parameter must larger than 0.")
  let pdf = (x, t: t) => Jstat.Cauchy.pdf(x, t.local, t.scale)
  let cdf = (x, t: t) => Jstat.Cauchy.cdf(x, t.local, t.scale)
@ -102,7 +102,7 @@ module Triangular = {
  type t = triangular
  let make = (low, medium, high): result<symbolicDist, string> =>
    low < medium && medium < high
-      ? Ok(#Triangular({low, medium, high}))
+      ? Ok(#Triangular({low: low, medium: medium, high: high}))
      : Error("Triangular values must be increasing order.")
  let pdf = (x, t: t) => Jstat.Triangular.pdf(x, t.low, t.high, t.medium) // not obvious in jstat docs that high comes before medium?
  let cdf = (x, t: t) => Jstat.Triangular.cdf(x, t.low, t.high, t.medium)
@ -116,7 +116,7 @@ module Beta = {
  type t = beta
  let make = (alpha, beta) =>
    alpha > 0.0 && beta > 0.0
-      ? Ok(#Beta({alpha, beta}))
+      ? Ok(#Beta({alpha: alpha, beta: beta}))
      : Error("Beta distribution parameters must be positive")
  let pdf = (x, t: t) => Jstat.Beta.pdf(x, t.alpha, t.beta)
  let cdf = (x, t: t) => Jstat.Beta.cdf(x, t.alpha, t.beta)
@ -150,7 +150,7 @@ module Lognormal = {
  type t = lognormal
  let make = (mu, sigma) =>
    sigma > 0.0
-      ? Ok(#Lognormal({mu, sigma}))
+      ? Ok(#Lognormal({mu: mu, sigma: sigma}))
      : Error("Lognormal standard deviation must be larger than 0")
  let pdf = (x, t: t) => Jstat.Lognormal.pdf(x, t.mu, t.sigma)
  let cdf = (x, t: t) => Jstat.Lognormal.cdf(x, t.mu, t.sigma)
@ -164,7 +164,7 @@ module Lognormal = {
    let logHigh = Js.Math.log(high)
    let mu = E.A.Floats.mean([logLow, logHigh])
    let sigma = (logHigh -. logLow) /. (2.0 *. normal95confidencePoint)
-    #Lognormal({mu, sigma})
+    #Lognormal({mu: mu, sigma: sigma})
  }
  let fromMeanAndStdev = (mean, stdev) => {
    // https://math.stackexchange.com/questions/2501783/parameters-of-a-lognormal-distribution
@ -174,7 +174,7 @@ module Lognormal = {
      let meanSquared = mean ** 2.
      let mu = 2. *. Js.Math.log(mean) -. 0.5 *. Js.Math.log(variance +. meanSquared)
      let sigma = Js.Math.sqrt(Js.Math.log(variance /. meanSquared +. 1.))
-      Ok(#Lognormal({mu, sigma}))
+      Ok(#Lognormal({mu: mu, sigma: sigma}))
    } else {
      Error("Lognormal standard deviation must be larger than 0")
    }
@ -184,14 +184,14 @@ module Lognormal = {
    // https://wikiless.org/wiki/Log-normal_distribution?lang=en#Multiplication_and_division_of_independent,_log-normal_random_variables
    let mu = l1.mu +. l2.mu
    let sigma = Js.Math.sqrt(l1.sigma ** 2. +. l2.sigma ** 2.)
-    #Lognormal({mu, sigma})
+    #Lognormal({mu: mu, sigma: sigma})
  }
  let divide = (l1, l2) => {
    let mu = l1.mu -. l2.mu
    // We believe the ratiands will have covariance zero.
    // See here https://stats.stackexchange.com/questions/21735/what-are-the-mean-and-variance-of-the-ratio-of-two-lognormal-variables for details
    let sigma = Js.Math.sqrt(l1.sigma ** 2. +. l2.sigma ** 2.)
-    #Lognormal({mu, sigma})
+    #Lognormal({mu: mu, sigma: sigma})
  }
  let operate = (operation: Operation.Algebraic.t, n1: t, n2: t) =>
    switch operation {
@ -220,7 +220,7 @@ module Lognormal = {
 module Uniform = {
  type t = uniform
  let make = (low, high) =>
-    high > low ? Ok(#Uniform({low, high})) : Error("High must be larger than low")
+    high > low ? Ok(#Uniform({low: low, high: high})) : Error("High must be larger than low")

  let pdf = (x, t: t) => Jstat.Uniform.pdf(x, t.low, t.high)
  let cdf = (x, t: t) => Jstat.Uniform.cdf(x, t.low, t.high)
@ -239,7 +239,9 @@ module Uniform = {
 module Logistic = {
  type t = logistic
  let make = (location, scale) =>
-    scale > 0.0 ? Ok(#Logistic({location, scale})) : Error("Scale must be positive")
+    scale > 0.0
+      ? Ok(#Logistic({location: location, scale: scale}))
+      : Error("Scale must be positive")

  let pdf = (x, t: t) => Stdlib.Logistic.pdf(x, t.location, t.scale)
  let cdf = (x, t: t) => Stdlib.Logistic.cdf(x, t.location, t.scale)
@ -283,7 +285,7 @@ module Gamma = {
  let make = (shape: float, scale: float) => {
    if shape > 0. {
      if scale > 0. {
-        Ok(#Gamma({shape, scale}))
+        Ok(#Gamma({shape: shape, scale: scale}))
      } else {
        Error("scale must be larger than 0")
      }
@ -541,6 +543,6 @@ module T = {
    | _ =>
      let xs = interpolateXs(~xSelection, d, sampleCount)
      let ys = xs |> E.A.fmap(x => pdf(x, d))
-      Continuous(Continuous.make(~integralSumCache=Some(1.0), {xs, ys}))
+      Continuous(Continuous.make(~integralSumCache=Some(1.0), {xs: xs, ys: ys}))
    }
 }
--- a/packages/squiggle-lang/src/rescript/FR/FR_Builtin.res
+++ b/packages/squiggle-lang/src/rescript/FR/FR_Builtin.res
@ -23,7 +23,7 @@ let makeFn = (
  name: string,
  inputs: array<frType>,
  fn: array<Reducer_T.value> => result<Reducer_T.value, errorMessage>,
-) => makeFnMany(name, [{inputs, fn}])
+) => makeFnMany(name, [{inputs: inputs, fn: fn}])

 let library = [
  Make.ff2f(~name="add", ~fn=(x, y) => x +. y, ()), // infix + (see Reducer/Reducer_Peggy/helpers.ts)
@ -62,7 +62,6 @@ let library = [
        let answer = Js.String2.concat(a, b)
        answer->Reducer_T.IEvString->Ok
      }
-
    | _ => Error(impossibleError)
    }
  }),
@ -73,7 +72,6 @@ let library = [
        let _ = Js.Array2.pushMany(a, b)
        a->Reducer_T.IEvArray->Ok
      }
-
    | _ => Error(impossibleError)
    }
  }),
@ -83,7 +81,6 @@ let library = [
        Js.log(value->Reducer_Value.toString)
        value->Ok
      }
-
    | _ => Error(impossibleError)
    }
  }),
@ -93,7 +90,6 @@ let library = [
        Js.log(`${label}: ${value->Reducer_Value.toString}`)
        value->Ok
      }
-
    | _ => Error(impossibleError)
    }
  }),
--- a/packages/squiggle-lang/src/rescript/FR/FR_Danger.res
+++ b/packages/squiggle-lang/src/rescript/FR/FR_Danger.res
@ -135,13 +135,11 @@ module Integration = {
              let wrappedResult = result->Reducer_T.IEvNumber->Ok
              wrappedResult
            }
-
          | (Error(b), _) => Error(b)
          | (_, Error(b)) => Error(b)
          }
          resultWithOuterPoints
        }
-
      | Error(b) =>
        ("Integration error 2 in Danger.integrate. It's possible that your function doesn't return a number, try definining auxiliaryFunction(x) = mean(yourFunction(x)) and integrate auxiliaryFunction instead." ++
        "Original error: " ++
@ -364,7 +362,6 @@ module DiminishingReturns = {
                        result[indexOfBiggestDMR] = value
                        Ok(result)
                      }
-
                    | Error(b) => Error(b)
                    }

@ -374,12 +371,10 @@ module DiminishingReturns = {
                    }
                    Ok(newAcc)
                  }
-
                | Error(b) => Error(b)
                }
                newAccWrapped
              }
-
            | Error(b) => Error(b)
            }
          })
@ -432,12 +427,10 @@ module DiminishingReturns = {
                    )
                    result
                  }
-
                | Error(b) => Error(b)
                }
                result
              }
-
            | _ =>
              "Error in Danger.diminishingMarginalReturnsForTwoFunctions"
              ->SqError.Message.REOther
--- a/packages/squiggle-lang/src/rescript/FR/FR_Fn.res
+++ b/packages/squiggle-lang/src/rescript/FR/FR_Fn.res
@ -20,7 +20,6 @@ module Declaration = {
        ->E.A.R.firstErrorOrOpen
        ->E.R2.fmap(args => Reducer_T.IEvDeclaration(Declaration.make(lambda, args)))
      }
-
    | Error(r) => Error(r)
    | Ok(_) => Error(impossibleErrorString)
    }
--- a/packages/squiggle-lang/src/rescript/FR/FR_GenericDist.res
+++ b/packages/squiggle-lang/src/rescript/FR/FR_GenericDist.res
@ -140,7 +140,6 @@ module Old = {
            | Error(err) => error(err)
            }
          }
-
        | Some(IEvNumber(_))
        | Some(IEvDistribution(_)) =>
          switch parseDistributionArray(args) {
@ -193,7 +192,6 @@ module Old = {
        }
        Helpers.toFloatFn(fn, dist, ~env)
      }
-
    | ("integralSum", [IEvDistribution(dist)]) => Helpers.toFloatFn(#IntegralSum, dist, ~env)
    | ("toString", [IEvDistribution(dist)]) => Helpers.toStringFn(ToString, dist, ~env)
    | ("sparkline", [IEvDistribution(dist)]) =>
--- a/packages/squiggle-lang/src/rescript/FR/FR_Pointset.res
+++ b/packages/squiggle-lang/src/rescript/FR/FR_Pointset.res
@ -19,7 +19,6 @@ let inputsToDist = (inputs: array<Reducer_T.value>, xyShapeToPointSetDist) => {
          | _ => impossibleError->SqError.Message.throw
          }
        }
-
      | _ => impossibleError->SqError.Message.throw
      }
    )
--- a/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Core.res
+++ b/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Core.res
@ -61,7 +61,6 @@ module FRType = {
        let input = ((name, frType): frTypeRecordParam) => `${name}: ${toString(frType)}`
        `{${r->E.A2.fmap(input)->E.A2.joinWith(", ")}}`
      }
-
    | FRTypeArray(r) => `list(${toString(r)})`
    | FRTypeLambda => `lambda`
    | FRTypeString => `string`
@ -133,9 +132,9 @@ module FnDefinition = {
  }

  let make = (~name, ~inputs, ~run, ()): t => {
-    name,
-    inputs,
-    run,
+    name: name,
+    inputs: inputs,
+    run: run,
  }
 }

@ -161,14 +160,14 @@ module Function = {
    ~isExperimental=false,
    (),
  ): t => {
-    name,
-    nameSpace,
-    definitions,
-    output,
+    name: name,
+    nameSpace: nameSpace,
+    definitions: definitions,
+    output: output,
    examples: examples->E.O2.default([]),
-    isExperimental,
-    requiresNamespace,
-    description,
+    isExperimental: isExperimental,
+    requiresNamespace: requiresNamespace,
+    description: description,
  }

  let toJson = (t: t): functionJson => {
@ -204,19 +203,15 @@ module Registry = {
            fn.requiresNamespace ? [] : [def.name],
          ]->E.A.concatMany

-        names->Belt.Array.reduce(
-          acc,
-          (acc, name) => {
-            switch acc->Belt.Map.String.get(name) {
-            | Some(fns) => {
-                let _ = fns->Js.Array2.push(def) // mutates the array, no need to update acc
-                acc
-              }
-
-            | None => acc->Belt.Map.String.set(name, [def])
+        names->Belt.Array.reduce(acc, (acc, name) => {
+          switch acc->Belt.Map.String.get(name) {
+          | Some(fns) => {
+              let _ = fns->Js.Array2.push(def) // mutates the array, no need to update acc
+              acc
            }
-          },
-        )
+          | None => acc->Belt.Map.String.set(name, [def])
+          }
+        })
      })
    )
  }
@ -250,7 +245,6 @@ module Registry = {
        | None => REOther(showNameMatchDefinitions())->Error
        }
      }
-
    | None => RESymbolNotFound(fnName)->Error
    }
  }
--- a/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Helpers.res
+++ b/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Helpers.res
@ -34,7 +34,6 @@ module Prepare = {
            let n2 = map->Belt.Map.String.getExn(arg2)
            Ok([n1, n2])
          }
-
        | _ => Error(impossibleErrorString)
        }

@ -46,7 +45,6 @@ module Prepare = {
            let n3 = map->Belt.Map.String.getExn(arg3)
            Ok([n1, n2, n3])
          }
-
        | _ => Error(impossibleErrorString)
        }
    }
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Bindings.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Bindings.res
@ -44,4 +44,4 @@ let removeResult = ({namespace} as bindings: t): t => {

 let locals = ({namespace}: t): Reducer_T.namespace => namespace

-let fromNamespace = (namespace: Reducer_Namespace.t): t => {namespace, parent: None}
+let fromNamespace = (namespace: Reducer_Namespace.t): t => {namespace: namespace, parent: None}
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Context.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Context.res
@ -6,7 +6,7 @@ let createContext = (stdLib: Reducer_Namespace.t, environment: Reducer_T.environ
  {
    frameStack: list{},
    bindings: stdLib->Reducer_Bindings.fromNamespace->Reducer_Bindings.extend,
-    environment,
+    environment: environment,
    inFunction: None,
  }
 }
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Expression/Reducer_Expression.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Expression/Reducer_Expression.res
@ -123,7 +123,6 @@ let rec evaluate: T.reducerFn = (expression, context): (T.value, T.context) => {
          )
          (result, context)
        }
-
      | _ => RENotAFunction(lambda->Reducer_Value.toString)->throwFrom(expression, context)
      }
    }
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_FrameStack.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_FrameStack.res
@ -23,8 +23,8 @@ let make = (): t => list{}

 let extend = (t: t, name: string, location: option<Reducer_Peggy_Parse.location>) =>
  t->Belt.List.add({
-    name,
-    location,
+    name: name,
+    location: location,
  })

 // this is useful for SyntaxErrors
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Lambda.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Lambda.res
@ -43,10 +43,10 @@ let makeLambda = (

  FnLambda({
    // context: bindings,
-    name,
+    name: name,
    body: lambda,
-    parameters,
-    location,
+    parameters: parameters,
+    location: location,
  })
 }

@ -54,8 +54,8 @@ let makeLambda = (
 let makeFFILambda = (name: string, body: Reducer_T.lambdaBody): t => FnBuiltin({
  // Note: current bindings could be accidentally exposed here through context (compare with native lambda implementation above, where we override them with local bindings).
  // But FunctionRegistry API is too limited for that to matter. Please take care not to violate that in the future by accident.
-  body,
-  name,
+  body: body,
+  name: name,
 })

 // this function doesn't scale to FunctionRegistry's polymorphic functions
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Peggy/Reducer_Peggy_Parse.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Peggy/Reducer_Peggy_Parse.res
@ -113,7 +113,7 @@ let nodeToAST = (node: node) => {
  | _ => raise(UnsupportedPeggyNodeType(node["type"]))
  }

-  {location: node["location"], content}
+  {location: node["location"], content: content}
 }

 let nodeIdentifierToAST = (node: nodeIdentifier) => {
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Peggy/Reducer_Peggy_ToExpression.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Peggy/Reducer_Peggy_ToExpression.res
@ -68,7 +68,7 @@ let rec fromNode = (node: Parse.node): expression => {
  }

  {
-    ast,
-    content,
+    ast: ast,
+    content: content,
  }
 }
--- a/packages/squiggle-lang/src/rescript/ReducerProject/ReducerProject.res
+++ b/packages/squiggle-lang/src/rescript/ReducerProject/ReducerProject.res
@ -216,7 +216,6 @@ let tryRunWithResult = (
        project->setResult(sourceId, Error(error))
        Error(error)
      }
-
    | Ok(_prevResult) => {
        project->doLinkAndRun(sourceId)
        project->getResultOption(sourceId)->Belt.Option.getWithDefault(rPrevResult)
--- a/packages/squiggle-lang/src/rescript/ReducerProject/ReducerProject_ProjectItem.res
+++ b/packages/squiggle-lang/src/rescript/ReducerProject/ReducerProject_ProjectItem.res
@ -6,7 +6,7 @@ type t = T.t

 let emptyItem = (sourceId: string): projectItem => {
  source: "",
-  sourceId,
+  sourceId: sourceId,
  rawParse: None,
  expression: None,
  continuation: Reducer_Namespace.make(),
@ -76,7 +76,7 @@ let resetIncludes = (r: t): t => {
 }

 let setSource = (r: t, source: T.sourceArgumentType): t =>
-  {...r, source}->resetIncludes->touchSource
+  {...r, source: source}->resetIncludes->touchSource

 let setRawParse = (r: t, rawParse: T.rawParseArgumentType): t =>
  {...r, rawParse: Some(rawParse)}->touchRawParse
@ -86,7 +86,7 @@ let setExpression = (r: t, expression: T.expressionArgumentType): t =>

 let setContinuation = (r: t, continuation: T.continuationArgumentType): t => {
  ...r,
-  continuation,
+  continuation: continuation,
 }

 let setResult = (r: t, result: T.resultArgumentType): t => {
@ -110,23 +110,24 @@ let getPastChain = (this: t): array<string> => {
  Js.Array2.concat(getDirectIncludes(this), getContinues(this))
 }

-let setContinues = (this: t, continues: array<string>): t => {...this, continues}->touchSource
+let setContinues = (this: t, continues: array<string>): t =>
+  {...this, continues: continues}->touchSource

 let removeContinues = (this: t): t => {...this, continues: []}->touchSource

 let setIncludes = (this: t, includes: T.includesType): t => {
  ...this,
-  includes,
+  includes: includes,
 }

 let setImportAsVariables = (this: t, includeAsVariables: T.importAsVariablesType): t => {
  ...this,
-  includeAsVariables,
+  includeAsVariables: includeAsVariables,
 }

 let setDirectImports = (this: t, directIncludes: array<string>): t => {
  ...this,
-  directIncludes,
+  directIncludes: directIncludes,
 }

 let parseIncludes = (this: t): t => {
@ -143,9 +144,9 @@ let parseIncludes = (this: t): t => {
        ->Belt.Array.map(((_variable, file)) => file)
      {
        ...this,
-        includes,
-        includeAsVariables,
-        directIncludes,
+        includes: includes,
+        includeAsVariables: includeAsVariables,
+        directIncludes: directIncludes,
      }
    }
  }
--- a/packages/squiggle-lang/src/rescript/SqError.res
+++ b/packages/squiggle-lang/src/rescript/SqError.res
@ -54,7 +54,6 @@ module Message = {
        }
        answer
      }
-
    | REMacroNotFound(macro) => `Macro not found: ${macro}`
    | RENotAFunction(valueString) => `${valueString} is not a function`
    | RERecordPropertyNotFound(msg, index) => `${msg}: ${index}`
@ -94,8 +93,8 @@ type t = {
 exception SqException(t)

 let fromMessageWithFrameStack = (message: Message.t, frameStack: Reducer_FrameStack.t): t => {
-  message,
-  frameStack,
+  message: message,
+  frameStack: frameStack,
 }

 // this shouldn't be used much, since frame stack will be empty
--- a/packages/squiggle-lang/src/rescript/SquiggleLibrary/SquiggleLibrary_StdLib.res
+++ b/packages/squiggle-lang/src/rescript/SquiggleLibrary/SquiggleLibrary_StdLib.res
@ -18,7 +18,6 @@ let stdLib: Reducer_T.namespace = {
          | None => REArrayIndexNotFound("Array index not found", index)->SqError.Message.throw
          }
        }
-
      | [IEvRecord(dict), IEvString(sIndex)] =>
        switch Belt.Map.String.get(dict, sIndex) {
        | Some(value) => value
--- a/packages/squiggle-lang/src/rescript/Utility/Declaration.res
+++ b/packages/squiggle-lang/src/rescript/Utility/Declaration.res
@ -9,13 +9,13 @@ type declaration<'a> = {

 module ContinuousFloatArg = {
  let make = (min: float, max: float): arg => {
-    Float({min, max})
+    Float({min: min, max: max})
  }
 }

 module ContinuousTimeArg = {
  let make = (min: Js.Date.t, max: Js.Date.t): arg => {
-    Date({min, max})
+    Date({min: min, max: max})
  }
 }

@ -33,7 +33,7 @@ module Arg = {
 }

 let make = (fn: 'a, args: array<arg>): declaration<'a> => {
-  {fn, args}
+  {fn: fn, args: args}
 }

 let toString = (r: declaration<'a>, fnToString): string => {
--- a/packages/squiggle-lang/src/rescript/Utility/XYShape.res
+++ b/packages/squiggle-lang/src/rescript/Utility/XYShape.res
@ -85,8 +85,8 @@ module T = {
  }
  let square = mapX(x => x ** 2.0)
  let zip = ({xs, ys}: t) => Belt.Array.zip(xs, ys)
-  let fromArray = ((xs, ys)): t => {xs, ys}
-  let fromArrays = (xs, ys): t => {xs, ys}
+  let fromArray = ((xs, ys)): t => {xs: xs, ys: ys}
+  let fromArrays = (xs, ys): t => {xs: xs, ys: ys}
  let accumulateYs = (fn, p: t) => fromArray((p.xs, E.A.accumulate(fn, p.ys)))
  let concat = (t1: t, t2: t) => {
    let cxs = Array.concat(list{t1.xs, t2.xs})
@ -142,7 +142,7 @@ module T = {
  }

  let make = (~xs: array<float>, ~ys: array<float>) => {
-    let attempt: t = {xs, ys}
+    let attempt: t = {xs: xs, ys: ys}
    switch Validator.validate(attempt) {
    | Some(error) => Error(error)
    | None => Ok(attempt)
@ -452,7 +452,6 @@ module PointwiseCombination = {
          let _ = Js.Array.push(fn(y1, y2), newYs)
          let _ = Js.Array.push(x, newXs)
        }
-
      | None => ()
      }
    }
@ -559,7 +558,7 @@ module Range = {
        (xs[x + 1] -. xs[x]) *. ((ys[x] +. ys[x + 1]) /. 2.) +. cumulativeY[x], // dx // (1/2) * (avgY)
      )
    }
-    Some({xs, ys: cumulativeY})
+    Some({xs: xs, ys: cumulativeY})
  }

  let derivative = mapYsBasedOnRanges(delta_y_over_delta_x)
--- a/packages/website/docs/Api/Dist.mdx
+++ b/packages/website/docs/Api/Dist.mdx
@ -332,7 +332,7 @@ truncateRight: (distribution, right: number) => distribution
 **Examples**

 ```javascript
-truncateRight(normal(5, 2), 6);
+truncateLeft(normal(5, 2), 6);
 ```

 ### klDivergence
--- a/packages/website/docs/Internal/ImportIntoMdx.mdx
+++ b/packages/website/docs/Internal/ImportIntoMdx.mdx
@ -3,11 +3,9 @@ title: How to import squiggle files into `.mdx` documents
 sidebar_position: 5
 ---

-:::caution Proof of concept
+import { SquiggleEditorWithImportedBindings } from "../../src/components/SquiggleEditor";

-The following usage pattern is currently broken. We expect to bring it back in some form in 0.5.1 or 0.5.2 release.
-
-:::
+_Proof of concept_

 ## Consider the following squiggle file

@ -32,3 +30,10 @@ import { SquiggleEditorWithImportedBindings } from "../../src/components/Squiggl
 ```

 Notice, you need to wrap the export of `@quri/squiggle-components` in custom code for dynamicism, please view `packages/website/src/components/` in github for details.
+
+Which would then look exactly like
+
+<SquiggleEditorWithImportedBindings
+  defaultCode={"f(z)"}
+  bindingsImportUrl={"/estimates/demo.squiggle"}
+/>
--- a/turbo.json
+++ b/turbo.json
@ -22,6 +22,7 @@
        "benchmark/**/*.bs.js",
        "src/rescript/**/*.js",
        "src/rescript/**/*.gen.tsx",
+        "../../node_modules/bisect_ppx/**/*.bs.js",
        "dist/**"
      ]
    },
@ -30,10 +31,10 @@
      "outputs": []
    },
    "bundle": {
-      "dependsOn": ["build"]
+      "dependsOn": ["^build", "build"]
    },
    "coverage": {
-      "dependsOn": ["build"]
+      "cache": false
    }
  }
 }
--- a/yarn.lock
+++ b/yarn.lock