Merge branch 'develop' into Documentation-auto-generation

* develop: (22 commits)
  components-lint respects components prettierignore
  format main.css and prettierignore base.css
  scoped tailwind preflight, top-level .squiggle wrapper
  grammar: identifiers with modules
  Refactored reducerInterface files
  Added simple scientific units
  Added stdev to table of stats, when needed
  Added stdev and variance to Distribution Operation Constructors
  Quick addition of stdev-variance-min-max-mode
  ⬆️ Bump @types/node from 17.0.38 to 17.0.40
  ⬆️ Bump webpack from 5.72.1 to 5.73.0
  ⬆️ Bump @storybook/react from 6.5.6 to 6.5.7
  ⬆️ Bump ts-node from 10.8.0 to 10.8.1
  ⬆️ Bump @storybook/builder-webpack5 from 6.5.6 to 6.5.7
  ⬆️ Bump peggy from 2.0.0 to 2.0.1
  ⬆️ Bump @storybook/addon-essentials from 6.5.6 to 6.5.7
  ⬆️ Bump @storybook/preset-create-react-app from 4.1.1 to 4.1.2
  ⬆️ Bump @hookform/resolvers from 2.8.10 to 2.9.0
  ⬆️ Bump typescript from 4.7.2 to 4.7.3
  ⬆️ Bump @storybook/manager-webpack5 from 6.5.6 to 6.5.7
  ...

.github/workflows/ci.yml

@@ -100,7 +100,7 @@ jobs:
         uses: creyD/prettier_action@v4.2
         with:
           dry: true
-          prettier_options: --check packages/components
+          prettier_options: --check packages/components --ignore-path packages/components/.prettierignore
 
   components-bundle-build:
     name: Components bundle and build

packages/components/.prettierignore

@@ -1,2 +1,3 @@
 dist/
 storybook-static
+src/styles/base.css

packages/components/.storybook/preview.js

@@ -1,4 +1,15 @@
-import "../src/tailwind.css";
+import "../src/styles/main.css";
+import "!style-loader!css-loader!postcss-loader!../src/styles/main.css";
+import { SquiggleContainer } from "../src/components/SquiggleContainer";
+
+export const decorators = [
+  (Story) => (
+    <SquiggleContainer>
+      <Story />
+    </SquiggleContainer>
+  ),
+];
+
 export const parameters = {
   actions: { argTypesRegex: "^on[A-Z].*" },
   controls: {

packages/components/package.json

@@ -5,7 +5,7 @@
   "dependencies": {
     "@headlessui/react": "^1.6.4",
     "@heroicons/react": "^1.0.6",
-    "@hookform/resolvers": "^2.8.10",
+    "@hookform/resolvers": "^2.9.0",
     "@quri/squiggle-lang": "^0.2.8",
     "@react-hook/size": "^2.1.2",
     "lodash": "^4.17.21",
@@ -22,42 +22,44 @@
   },
   "devDependencies": {
     "@babel/plugin-proposal-private-property-in-object": "^7.17.12",
-    "@storybook/addon-actions": "^6.5.6",
+    "@storybook/addon-actions": "^6.5.7",
-    "@storybook/addon-essentials": "^6.5.6",
+    "@storybook/addon-essentials": "^6.5.7",
-    "@storybook/addon-links": "^6.5.6",
+    "@storybook/addon-links": "^6.5.7",
-    "@storybook/builder-webpack5": "^6.5.6",
+    "@storybook/builder-webpack5": "^6.5.7",
-    "@storybook/manager-webpack5": "^6.5.6",
+    "@storybook/manager-webpack5": "^6.5.7",
     "@storybook/node-logger": "^6.5.6",
-    "@storybook/preset-create-react-app": "^4.1.1",
+    "@storybook/preset-create-react-app": "^4.1.2",
-    "@storybook/react": "^6.5.6",
+    "@storybook/react": "^6.5.7",
     "@tailwindcss/forms": "^0.5.2",
     "@testing-library/jest-dom": "^5.16.4",
     "@testing-library/react": "^13.3.0",
     "@testing-library/user-event": "^14.2.0",
     "@types/jest": "^27.5.0",
     "@types/lodash": "^4.14.182",
-    "@types/node": "^17.0.36",
+    "@types/node": "^17.0.40",
     "@types/react": "^18.0.9",
     "@types/react-dom": "^18.0.5",
     "@types/styled-components": "^5.1.24",
     "@types/webpack": "^5.28.0",
     "cross-env": "^7.0.3",
     "mini-css-extract-plugin": "^2.6.0",
+    "postcss-cli": "^9.1.0",
+    "postcss-import": "^14.1.0",
     "postcss-loader": "^7.0.0",
     "react-scripts": "^5.0.1",
     "style-loader": "^3.3.1",
     "tailwindcss": "^3.0.24",
     "ts-loader": "^9.3.0",
     "tsconfig-paths-webpack-plugin": "^3.5.2",
-    "typescript": "^4.7.2",
+    "typescript": "^4.7.3",
     "web-vitals": "^2.1.4",
-    "webpack": "^5.72.1",
+    "webpack": "^5.73.0",
     "webpack-cli": "^4.9.2",
     "webpack-dev-server": "^4.9.0"
   },
   "scripts": {
     "start": "cross-env REACT_APP_FAST_REFRESH=false && start-storybook -p 6006 -s public",
-    "build": "tsc -b && tailwindcss -i ./src/tailwind.css -o ./dist/main.css && build-storybook -s public",
+    "build": "tsc -b && postcss ./src/styles/main.css -o ./dist/main.css && build-storybook -s public",
     "bundle": "webpack",
     "all": "yarn bundle && yarn build",
     "lint": "prettier --check .",

packages/components/postcss.config.js

@@ -1,5 +1,7 @@
 module.exports = {
   plugins: {
+    "postcss-import": {},
+    "tailwindcss/nesting": {},
     tailwindcss: {},
     autoprefixer: {},
     cssnano: {},

packages/components/src/components/Alert.tsx

@@ -4,6 +4,7 @@ import {
   InformationCircleIcon,
   CheckCircleIcon,
 } from "@heroicons/react/solid";
+import clsx from "clsx";
 
 export const Alert: React.FC<{
   heading: string;
@@ -23,18 +24,18 @@ export const Alert: React.FC<{
   children,
 }) => {
   return (
-    <div className={`rounded-md p-4 ${backgroundColor}`}>
+    <div className={clsx("rounded-md p-4", backgroundColor)}>
       <div className="flex">
         <Icon
-          className={`h-5 w-5 flex-shrink-0 ${iconColor}`}
+          className={clsx("h-5 w-5 flex-shrink-0", iconColor)}
           aria-hidden="true"
         />
         <div className="ml-3">
-          <header className={`text-sm font-medium ${headingColor}`}>
+          <header className={clsx("text-sm font-medium", headingColor)}>
             {heading}
           </header>
           {children && React.Children.count(children) ? (
-            <div className={`mt-2 text-sm ${bodyColor}`}>{children}</div>
+            <div className={clsx("mt-2 text-sm", bodyColor)}>{children}</div>
           ) : null}
         </div>
       </div>

packages/components/src/components/DistributionChart.tsx

@@ -9,6 +9,8 @@ import { Vega, VisualizationSpec } from "react-vega";
 import * as chartSpecification from "../vega-specs/spec-distributions.json";
 import { ErrorAlert } from "./Alert";
 import { useSize } from "react-use";
+import clsx from "clsx";
+
 import {
   linearXScale,
   logXScale,
@@ -128,7 +130,7 @@ export const CheckBox: React.FC<CheckBoxProps> = ({
         onChange={() => onChange(!value)}
         disabled={disabled}
       />
-      <label className={disabled ? "text-slate-400" : ""}> {label}</label>
+      <label className={clsx(disabled && "text-slate-400")}> {label}</label>
     </span>
   );
 };
@@ -153,6 +155,7 @@ type SummaryTableProps = {
 
 const SummaryTable: React.FC<SummaryTableProps> = ({ distribution }) => {
   const mean = distribution.mean();
+  const stdev = distribution.stdev();
   const p5 = distribution.inv(0.05);
   const p10 = distribution.inv(0.1);
   const p25 = distribution.inv(0.25);
@@ -161,6 +164,9 @@ const SummaryTable: React.FC<SummaryTableProps> = ({ distribution }) => {
   const p90 = distribution.inv(0.9);
   const p95 = distribution.inv(0.95);
 
+  const hasResult = (x: result<number, distributionError>): boolean =>
+    x.tag === "Ok";
+
   const unwrapResult = (
     x: result<number, distributionError>
   ): React.ReactNode => {
@@ -180,6 +186,7 @@ const SummaryTable: React.FC<SummaryTableProps> = ({ distribution }) => {
       <thead className="bg-slate-50">
         <tr>
           <TableHeadCell>{"Mean"}</TableHeadCell>
+          {hasResult(stdev) && <TableHeadCell>{"Stdev"}</TableHeadCell>}
           <TableHeadCell>{"5%"}</TableHeadCell>
           <TableHeadCell>{"10%"}</TableHeadCell>
           <TableHeadCell>{"25%"}</TableHeadCell>
@@ -192,6 +199,7 @@ const SummaryTable: React.FC<SummaryTableProps> = ({ distribution }) => {
       <tbody>
         <tr>
           <Cell>{unwrapResult(mean)}</Cell>
+          {hasResult(stdev) && <Cell>{unwrapResult(stdev)}</Cell>}
           <Cell>{unwrapResult(p5)}</Cell>
           <Cell>{unwrapResult(p10)}</Cell>
           <Cell>{unwrapResult(p25)}</Cell>

packages/components/src/components/SquiggleContainer.tsx

@@ -0,0 +1,25 @@
+import React, { useContext } from "react";
+
+type Props = {
+  children: React.ReactNode;
+};
+
+type SquiggleContextShape = {
+  containerized: boolean;
+};
+const SquiggleContext = React.createContext<SquiggleContextShape>({
+  containerized: false,
+});
+
+export const SquiggleContainer: React.FC<Props> = ({ children }) => {
+  const context = useContext(SquiggleContext);
+  if (context.containerized) {
+    return <>{children}</>;
+  } else {
+    return (
+      <SquiggleContext.Provider value={{ containerized: true }}>
+        <div className="squiggle">{children}</div>
+      </SquiggleContext.Provider>
+    );
+  }
+};

packages/components/src/components/SquiggleEditor.tsx

@@ -15,6 +15,7 @@ import {
   defaultBindings,
 } from "@quri/squiggle-lang";
 import { ErrorAlert } from "./Alert";
+import { SquiggleContainer } from "./SquiggleContainer";
 
 export interface SquiggleEditorProps {
   /** The input string for squiggle */
@@ -64,29 +65,31 @@ export let SquiggleEditor: React.FC<SquiggleEditorProps> = ({
     count: diagramCount,
   };
   return (
-    <div>
+    <SquiggleContainer>
-      <div className="border border-grey-200 p-2 m-4">
+      <div>
-        <CodeEditor
+        <div className="border border-grey-200 p-2 m-4">
-          value={expression}
+          <CodeEditor
-          onChange={setExpression}
+            value={expression}
-          oneLine={true}
+            onChange={setExpression}
-          showGutter={false}
+            oneLine={true}
-          height={20}
+            showGutter={false}
+            height={20}
+          />
+        </div>
+        <SquiggleChart
+          width={width}
+          environment={environment}
+          squiggleString={expression}
+          chartSettings={chartSettings}
+          onChange={onChange}
+          bindings={bindings}
+          jsImports={jsImports}
+          showTypes={showTypes}
+          showControls={showControls}
+          showSummary={showSummary}
         />
       </div>
-      <SquiggleChart
+    </SquiggleContainer>
-        width={width}
-        environment={environment}
-        squiggleString={expression}
-        chartSettings={chartSettings}
-        onChange={onChange}
-        bindings={bindings}
-        jsImports={jsImports}
-        showTypes={showTypes}
-        showControls={showControls}
-        showSummary={showSummary}
-      />
-    </div>
   );
 };
 
@@ -171,18 +174,22 @@ export let SquigglePartial: React.FC<SquigglePartialProps> = ({
   React.useEffect(runSquiggleAndUpdateBindings, [expression]);
 
   return (
-    <div>
+    <SquiggleContainer>
-      <div className="border border-grey-200 p-2 m-4">
+      <div>
-        <CodeEditor
+        <div className="border border-grey-200 p-2 m-4">
-          value={expression}
+          <CodeEditor
-          onChange={setExpression}
+            value={expression}
-          oneLine={true}
+            onChange={setExpression}
-          showGutter={false}
+            oneLine={true}
-          height={20}
+            showGutter={false}
-        />
+            height={20}
+          />
+        </div>
+        {error !== null ? (
+          <ErrorAlert heading="Error">{error}</ErrorAlert>
+        ) : null}
       </div>
-      {error !== null ? <ErrorAlert heading="Error">{error}</ErrorAlert> : null}
+    </SquiggleContainer>
-    </div>
   );
 };
 

packages/components/src/components/SquigglePlayground.tsx

@@ -10,6 +10,7 @@ import {
   CogIcon,
   CurrencyDollarIcon,
 } from "@heroicons/react/solid";
+import clsx from "clsx";
 
 import { defaultBindings, environment } from "@quri/squiggle-lang";
 
@@ -17,6 +18,7 @@ import { SquiggleChart } from "./SquiggleChart";
 import { CodeEditor } from "./CodeEditor";
 import { JsonEditor } from "./JsonEditor";
 import { ErrorAlert, SuccessAlert } from "./Alert";
+import { SquiggleContainer } from "./SquiggleContainer";
 
 interface PlaygroundProps {
   /** The initial squiggle string to put in the playground */
@@ -87,10 +89,6 @@ const schema = yup
   })
   .required();
 
-function classNames(...classes: string[]) {
-  return classes.filter(Boolean).join(" ");
-}
-
 type StyledTabProps = {
   name: string;
   icon: (props: React.ComponentProps<"svg">) => JSX.Element;
@@ -102,15 +100,13 @@ const StyledTab: React.FC<StyledTabProps> = ({ name, icon: Icon }) => {
       {({ selected }) => (
         <button className="group flex rounded-md focus:outline-none focus-visible:ring-offset-gray-100">
           <span
-            className={classNames(
+            className={clsx(
               "p-1 pl-2.5 pr-3.5 rounded-md flex items-center text-sm font-medium",
-              selected
+              selected && "bg-white shadow-sm ring-1 ring-black ring-opacity-5"
-                ? "bg-white shadow-sm ring-1 ring-black ring-opacity-5"
-                : ""
             )}
           >
             <Icon
-              className={classNames(
+              className={clsx(
                 "-ml-0.5 mr-2 h-4 w-4",
                 selected
                   ? "text-slate-500"
@@ -118,11 +114,11 @@ const StyledTab: React.FC<StyledTabProps> = ({ name, icon: Icon }) => {
               )}
             />
             <span
-              className={
+              className={clsx(
                 selected
                   ? "text-gray-900"
                   : "text-gray-600 group-hover:text-gray-900"
-              }
+              )}
             >
               {name}
             </span>
@@ -160,13 +156,14 @@ function InputItem<T>({
   type: "number";
   register: UseFormRegister<T>;
 }) {
-  const numberStyle =
-    "max-w-lg block w-full shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:max-w-xs sm:text-sm border-gray-300 rounded-md";
-
   return (
     <label className="block">
       <div className="text-sm font-medium text-gray-600 mb-1">{label}</div>
-      <input type={type} {...register(name)} className={numberStyle} />
+      <input
+        type={type}
+        {...register(name)}
+        className="max-w-lg block w-full shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:max-w-xs sm:text-sm border-gray-300 rounded-md"
+      />
     </label>
   );
 }
@@ -378,54 +375,57 @@ const SquigglePlayground: FC<PlaygroundProps> = ({
   );
 
   return (
-    <Tab.Group>
+    <SquiggleContainer>
-      <div className="pb-4">
+      <Tab.Group>
-        <Tab.List className="flex w-fit p-0.5 rounded-md bg-slate-100 hover:bg-slate-200">
+        <div className="pb-4">
-          <StyledTab name="Code" icon={CodeIcon} />
+          <Tab.List className="flex w-fit p-0.5 rounded-md bg-slate-100 hover:bg-slate-200">
-          <StyledTab name="Sampling Settings" icon={CogIcon} />
+            <StyledTab name="Code" icon={CodeIcon} />
-          <StyledTab name="View Settings" icon={ChartSquareBarIcon} />
+            <StyledTab name="Sampling Settings" icon={CogIcon} />
-          <StyledTab name="Input Variables" icon={CurrencyDollarIcon} />
+            <StyledTab name="View Settings" icon={ChartSquareBarIcon} />
-        </Tab.List>
+            <StyledTab name="Input Variables" icon={CurrencyDollarIcon} />
-      </div>
+          </Tab.List>
-      <div className="flex" style={{ height }}>
-        <div className="w-1/2">
-          <Tab.Panels>
-            <Tab.Panel>
-              <div className="border border-slate-200">
-                <CodeEditor
-                  value={squiggleString}
-                  onChange={setSquiggleString}
-                  oneLine={false}
-                  showGutter={true}
-                  height={height - 1}
-                />
-              </div>
-            </Tab.Panel>
-            <Tab.Panel>{samplingSettings}</Tab.Panel>
-            <Tab.Panel>{viewSettings}</Tab.Panel>
-            <Tab.Panel>{inputVariableSettings}</Tab.Panel>
-          </Tab.Panels>
         </div>
+        <div className="flex" style={{ height }}>
+          <div className="w-1/2">
+            <Tab.Panels>
+              <Tab.Panel>
+                <div className="border border-slate-200">
+                  <CodeEditor
+                    value={squiggleString}
+                    onChange={setSquiggleString}
+                    oneLine={false}
+                    showGutter={true}
+                    height={height - 1}
+                  />
+                </div>
+              </Tab.Panel>
+              <Tab.Panel>{samplingSettings}</Tab.Panel>
+              <Tab.Panel>{viewSettings}</Tab.Panel>
+              <Tab.Panel>{inputVariableSettings}</Tab.Panel>
+            </Tab.Panels>
+          </div>
 
-        <div className="w-1/2 p-2 pl-4">
+          <div className="w-1/2 p-2 pl-4">
-          <div style={{ maxHeight: height }}>
+            <div style={{ maxHeight: height }}>
-            <SquiggleChart
+              <SquiggleChart
-              squiggleString={squiggleString}
+                squiggleString={squiggleString}
-              environment={env}
+                environment={env}
-              chartSettings={chartSettings}
+                chartSettings={chartSettings}
-              height={vars.chartHeight}
+                height={vars.chartHeight}
-              showTypes={vars.showTypes}
+                showTypes={vars.showTypes}
-              showControls={vars.showControls}
+                showControls={vars.showControls}
-              bindings={defaultBindings}
+                bindings={defaultBindings}
-              jsImports={imports}
+                jsImports={imports}
-              showSummary={vars.showSummary}
+                showSummary={vars.showSummary}
-            />
+              />
+            </div>
           </div>
         </div>
-      </div>
+      </Tab.Group>
-    </Tab.Group>
+    </SquiggleContainer>
   );
 };
+
 export default SquigglePlayground;
 export function renderSquigglePlaygroundToDom(props: PlaygroundProps) {
   const parent = document.createElement("div");

packages/components/src/index.ts

@@ -9,5 +9,6 @@ export {
   default as SquigglePlayground,
   renderSquigglePlaygroundToDom,
 } from "./components/SquigglePlayground";
+export { SquiggleContainer } from "./components/SquiggleContainer";
 
 export { mergeBindings } from "@quri/squiggle-lang";

packages/components/src/styles/base.css

@@ -0,0 +1,510 @@
+.squiggle {
+/*
+This file contains:
+1) Base Tailwind preflight styles
+2) Base https://github.com/tailwindlabs/tailwindcss-forms styles
+
+(Both are wrapped in .squiggle)
+*/
+
+/*
+1. Use a consistent sensible line-height in all browsers.
+2. Prevent adjustments of font size after orientation changes in iOS.
+3. Use a more readable tab size.
+4. Use the user's configured `sans` font-family by default.
+*/
+
+/* html { */
+  line-height: 1.5; /* 1 */
+  -webkit-text-size-adjust: 100%; /* 2 */
+  -moz-tab-size: 4; /* 3 */
+  tab-size: 4; /* 3 */
+  font-family: theme('fontFamily.sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"); /* 4 */
+/* } */
+
+/*
+1. Remove the margin in all browsers.
+2. Inherit line-height from `html` so users can set them as a class directly on the `html` element.
+*/
+
+/* body { */
+  margin: 0; /* 1 */
+  line-height: inherit; /* 2 */
+/* } */
+
+
+/*
+1. Prevent padding and border from affecting element width. (https://github.com/mozdevs/cssremedy/issues/4)
+2. Allow adding a border to an element by just adding a border-width. (https://github.com/tailwindcss/tailwindcss/pull/116)
+*/
+
+*,
+::before,
+::after {
+  box-sizing: border-box; /* 1 */
+  border-width: 0; /* 2 */
+  border-style: solid; /* 2 */
+  border-color: theme('borderColor.DEFAULT', currentColor); /* 2 */
+}
+
+::before,
+::after {
+  --tw-content: '';
+}
+
+/*
+1. Add the correct height in Firefox.
+2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
+3. Ensure horizontal rules are visible by default.
+*/
+
+hr {
+  height: 0; /* 1 */
+  color: inherit; /* 2 */
+  border-top-width: 1px; /* 3 */
+}
+
+/*
+Add the correct text decoration in Chrome, Edge, and Safari.
+*/
+
+abbr:where([title]) {
+  text-decoration: underline dotted;
+}
+
+/*
+Remove the default font size and weight for headings.
+*/
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  font-size: inherit;
+  font-weight: inherit;
+}
+
+/*
+Reset links to optimize for opt-in styling instead of opt-out.
+*/
+
+a {
+  color: inherit;
+  text-decoration: inherit;
+}
+
+/*
+Add the correct font weight in Edge and Safari.
+*/
+
+b,
+strong {
+  font-weight: bolder;
+}
+
+/*
+1. Use the user's configured `mono` font family by default.
+2. Correct the odd `em` font sizing in all browsers.
+*/
+
+code,
+kbd,
+samp,
+pre {
+  font-family: theme('fontFamily.mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace); /* 1 */
+  font-size: 1em; /* 2 */
+}
+
+/*
+Add the correct font size in all browsers.
+*/
+
+small {
+  font-size: 80%;
+}
+
+/*
+Prevent `sub` and `sup` elements from affecting the line height in all browsers.
+*/
+
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+sup {
+  top: -0.5em;
+}
+
+/*
+1. Remove text indentation from table contents in Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=999088, https://bugs.webkit.org/show_bug.cgi?id=201297)
+2. Correct table border color inheritance in all Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=935729, https://bugs.webkit.org/show_bug.cgi?id=195016)
+3. Remove gaps between table borders by default.
+*/
+
+table {
+  text-indent: 0; /* 1 */
+  border-color: inherit; /* 2 */
+  border-collapse: collapse; /* 3 */
+}
+
+/*
+1. Change the font styles in all browsers.
+2. Remove the margin in Firefox and Safari.
+3. Remove default padding in all browsers.
+*/
+
+button,
+input,
+optgroup,
+select,
+textarea {
+  font-family: inherit; /* 1 */
+  font-size: 100%; /* 1 */
+  font-weight: inherit; /* 1 */
+  line-height: inherit; /* 1 */
+  color: inherit; /* 1 */
+  margin: 0; /* 2 */
+  padding: 0; /* 3 */
+}
+
+/*
+Remove the inheritance of text transform in Edge and Firefox.
+*/
+
+button,
+select {
+  text-transform: none;
+}
+
+/*
+1. Correct the inability to style clickable types in iOS and Safari.
+2. Remove default button styles.
+*/
+
+button,
+[type='button'],
+[type='reset'],
+[type='submit'] {
+  -webkit-appearance: button; /* 1 */
+  background-color: transparent; /* 2 */
+  background-image: none; /* 2 */
+}
+
+/*
+Use the modern Firefox focus style for all focusable elements.
+*/
+
+:-moz-focusring {
+  outline: auto;
+}
+
+/*
+Remove the additional `:invalid` styles in Firefox. (https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737)
+*/
+
+:-moz-ui-invalid {
+  box-shadow: none;
+}
+
+/*
+Add the correct vertical alignment in Chrome and Firefox.
+*/
+
+progress {
+  vertical-align: baseline;
+}
+
+/*
+Correct the cursor style of increment and decrement buttons in Safari.
+*/
+
+::-webkit-inner-spin-button,
+::-webkit-outer-spin-button {
+  height: auto;
+}
+
+/*
+1. Correct the odd appearance in Chrome and Safari.
+2. Correct the outline style in Safari.
+*/
+
+[type='search'] {
+  -webkit-appearance: textfield; /* 1 */
+  outline-offset: -2px; /* 2 */
+}
+
+/*
+Remove the inner padding in Chrome and Safari on macOS.
+*/
+
+::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/*
+1. Correct the inability to style clickable types in iOS and Safari.
+2. Change font properties to `inherit` in Safari.
+*/
+
+::-webkit-file-upload-button {
+  -webkit-appearance: button; /* 1 */
+  font: inherit; /* 2 */
+}
+
+/*
+Add the correct display in Chrome and Safari.
+*/
+
+summary {
+  display: list-item;
+}
+
+/*
+Removes the default spacing and border for appropriate elements.
+*/
+
+blockquote,
+dl,
+dd,
+h1,
+h2,
+h3,
+h4,
+h5,
+h6,
+hr,
+figure,
+p,
+pre {
+  margin: 0;
+}
+
+fieldset {
+  margin: 0;
+  padding: 0;
+}
+
+legend {
+  padding: 0;
+}
+
+ol,
+ul,
+menu {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+}
+
+/*
+Prevent resizing textareas horizontally by default.
+*/
+
+textarea {
+  resize: vertical;
+}
+
+/*
+1. Reset the default placeholder opacity in Firefox. (https://github.com/tailwindlabs/tailwindcss/issues/3300)
+2. Set the default placeholder color to the user's configured gray 400 color.
+*/
+
+input::placeholder,
+textarea::placeholder {
+  opacity: 1; /* 1 */
+  color: theme('colors.gray.400', #9ca3af); /* 2 */
+}
+
+/*
+Set the default cursor for buttons.
+*/
+
+button,
+[role="button"] {
+  cursor: pointer;
+}
+
+/*
+Make sure disabled buttons don't get the pointer cursor.
+*/
+:disabled {
+  cursor: default;
+}
+
+/*
+1. Make replaced elements `display: block` by default. (https://github.com/mozdevs/cssremedy/issues/14)
+2. Add `vertical-align: middle` to align replaced elements more sensibly by default. (https://github.com/jensimmons/cssremedy/issues/14#issuecomment-634934210)
+   This can trigger a poorly considered lint error in some tools but is included by design.
+*/
+
+img,
+svg,
+video,
+canvas,
+audio,
+iframe,
+embed,
+object {
+  display: block; /* 1 */
+  vertical-align: middle; /* 2 */
+}
+
+/*
+Constrain images and videos to the parent width and preserve their intrinsic aspect ratio. (https://github.com/mozdevs/cssremedy/issues/14)
+*/
+
+img,
+video {
+  max-width: 100%;
+  height: auto;
+}
+
+/* these styles were generated by tailwindcss-forms */
+[type='text'],[type='email'],[type='url'],[type='password'],[type='number'],[type='date'],[type='datetime-local'],[type='month'],[type='search'],[type='tel'],[type='time'],[type='week'],[multiple],textarea,select {
+  appearance: none;
+  background-color: #fff;
+  border-color: #6b7280;
+  border-width: 1px;
+  border-radius: 0px;
+  padding-top: 0.5rem;
+  padding-right: 0.75rem;
+  padding-bottom: 0.5rem;
+  padding-left: 0.75rem;
+  font-size: 1rem;
+  line-height: 1.5rem;
+  --tw-shadow: 0 0 #0000;
+}
+[type='text']:focus, [type='email']:focus, [type='url']:focus, [type='password']:focus, [type='number']:focus, [type='date']:focus, [type='datetime-local']:focus, [type='month']:focus, [type='search']:focus, [type='tel']:focus, [type='time']:focus, [type='week']:focus, [multiple]:focus, textarea:focus, select:focus {
+  outline: 2px solid transparent;
+  outline-offset: 2px;
+  --tw-ring-inset: var(--tw-empty,/*!*/ /*!*/);
+  --tw-ring-offset-width: 0px;
+  --tw-ring-offset-color: #fff;
+  --tw-ring-color: #2563eb;
+  --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
+  --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color);
+  box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
+  border-color: #2563eb;
+}
+input::placeholder,textarea::placeholder {
+  color: #6b7280;
+  opacity: 1;
+}
+::-webkit-datetime-edit-fields-wrapper {
+  padding: 0;
+}
+::-webkit-date-and-time-value {
+  min-height: 1.5em;
+}
+::-webkit-datetime-edit,::-webkit-datetime-edit-year-field,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute-field,::-webkit-datetime-edit-second-field,::-webkit-datetime-edit-millisecond-field,::-webkit-datetime-edit-meridiem-field {
+  padding-top: 0;
+  padding-bottom: 0;
+}
+select {
+  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
+  background-position: right 0.5rem center;
+  background-repeat: no-repeat;
+  background-size: 1.5em 1.5em;
+  padding-right: 2.5rem;
+  -webkit-print-color-adjust: exact;
+          print-color-adjust: exact;
+}
+[multiple] {
+  background-image: initial;
+  background-position: initial;
+  background-repeat: unset;
+  background-size: initial;
+  padding-right: 0.75rem;
+  -webkit-print-color-adjust: unset;
+          print-color-adjust: unset;
+}
+[type='checkbox'],[type='radio'] {
+  appearance: none;
+  padding: 0;
+  -webkit-print-color-adjust: exact;
+          print-color-adjust: exact;
+  display: inline-block;
+  vertical-align: middle;
+  background-origin: border-box;
+  -webkit-user-select: none;
+          user-select: none;
+  flex-shrink: 0;
+  height: 1rem;
+  width: 1rem;
+  color: #2563eb;
+  background-color: #fff;
+  border-color: #6b7280;
+  border-width: 1px;
+  --tw-shadow: 0 0 #0000;
+}
+[type='checkbox'] {
+  border-radius: 0px;
+}
+[type='radio'] {
+  border-radius: 100%;
+}
+[type='checkbox']:focus,[type='radio']:focus {
+  outline: 2px solid transparent;
+  outline-offset: 2px;
+  --tw-ring-inset: var(--tw-empty,/*!*/ /*!*/);
+  --tw-ring-offset-width: 2px;
+  --tw-ring-offset-color: #fff;
+  --tw-ring-color: #2563eb;
+  --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
+  --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);
+  box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
+}
+[type='checkbox']:checked,[type='radio']:checked {
+  border-color: transparent;
+  background-color: currentColor;
+  background-size: 100% 100%;
+  background-position: center;
+  background-repeat: no-repeat;
+}
+[type='checkbox']:checked {
+  background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e");
+}
+[type='radio']:checked {
+  background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='8' cy='8' r='3'/%3e%3c/svg%3e");
+}
+[type='checkbox']:checked:hover,[type='checkbox']:checked:focus,[type='radio']:checked:hover,[type='radio']:checked:focus {
+  border-color: transparent;
+  background-color: currentColor;
+}
+[type='checkbox']:indeterminate {
+  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 16 16'%3e%3cpath stroke='white' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 8h8'/%3e%3c/svg%3e");
+  border-color: transparent;
+  background-color: currentColor;
+  background-size: 100% 100%;
+  background-position: center;
+  background-repeat: no-repeat;
+}
+[type='checkbox']:indeterminate:hover,[type='checkbox']:indeterminate:focus {
+  border-color: transparent;
+  background-color: currentColor;
+}
+[type='file'] {
+  background: unset;
+  border-color: inherit;
+  border-width: 0;
+  border-radius: 0;
+  padding: 0;
+  font-size: unset;
+  line-height: inherit;
+}
+[type='file']:focus {
+  outline: 1px solid ButtonText;
+  outline: 1px auto -webkit-focus-ring-color;
+}
+
+}

packages/components/src/styles/main.css

@@ -0,0 +1,8 @@
+@import "./base.css";
+@tailwind components;
+@tailwind utilities;
+
+/* necessary hack because scoped preflight in ./base.css has higher specificity */
+.ace_cursor {
+  border-left: 2px solid !important;
+}

packages/components/src/tailwind.css

@@ -1,4 +0,0 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-@tailwind forms;

packages/components/tailwind.config.js

@@ -3,5 +3,6 @@ module.exports = {
   theme: {
     extend: {},
   },
+  important: ".squiggle",
   plugins: [require("@tailwindcss/forms")],
 };

packages/components/webpack.config.js

@@ -5,7 +5,7 @@ module.exports = {
   mode: "production",
   devtool: "source-map",
   profile: true,
-  entry: ["./src/index.ts", "./src/tailwind.css"],
+  entry: ["./src/index.ts", "./src/styles/main.css"],
   module: {
     rules: [
       {

packages/squiggle-lang/__tests__/Reducer/Reducer_Peggy/Reducer_Peggy_Parse_test.res

@@ -232,6 +232,7 @@ describe("Peggy parse", () => {
   })
   describe("unit", () => {
     testParse("1m", "{(::fromUnit_m 1)}")
+    testParse("1M", "{(::fromUnit_M 1)}")
     testParse("1m+2cm", "{(::add (::fromUnit_m 1) (::fromUnit_cm 2))}")
   })
 })

packages/squiggle-lang/package.json

@@ -56,14 +56,14 @@
     "lodash": "^4.17.21",
     "moduleserve": "^0.9.1",
     "nyc": "^15.1.0",
-    "peggy": "^2.0.0",
+    "peggy": "^2.0.1",
     "reanalyze": "^2.22.0",
     "rescript-fast-check": "^1.1.1",
     "ts-jest": "^27.1.4",
     "ts-loader": "^9.3.0",
-    "ts-node": "^10.8.0",
+    "ts-node": "^10.8.1",
-    "typescript": "^4.7.2",
+    "typescript": "^4.7.3",
-    "webpack": "^5.72.1",
+    "webpack": "^5.73.0",
     "webpack-cli": "^4.9.2"
   },
   "source": "./src/js/index.ts",

packages/squiggle-lang/src/js/distribution.ts

@@ -11,6 +11,7 @@ import {
 import { result, resultMap, Ok } from "./types";
 import {
   Constructors_mean,
+  Constructors_stdev,
   Constructors_sample,
   Constructors_pdf,
   Constructors_cdf,
@@ -69,6 +70,10 @@ export class Distribution {
     return Constructors_mean({ env: this.env }, this.t);
   }
 
+  stdev(): result<number, distributionError> {
+    return Constructors_stdev({ env: this.env }, this.t);
+  }
+
   sample(): result<number, distributionError> {
     return Constructors_sample({ env: this.env }, this.t);
   }

packages/squiggle-lang/src/rescript/Distributions/DistributionOperation.res

@@ -265,6 +265,8 @@ module Constructors = {
   module C = DistributionTypes.Constructors.UsingDists
   open OutputLocal
   let mean = (~env, dist) => C.mean(dist)->run(~env)->toFloatR
+  let stdev = (~env, dist) => C.stdev(dist)->run(~env)->toFloatR
+  let variance = (~env, dist) => C.variance(dist)->run(~env)->toFloatR
   let sample = (~env, dist) => C.sample(dist)->run(~env)->toFloatR
   let cdf = (~env, dist, f) => C.cdf(dist, f)->run(~env)->toFloatR
   let inv = (~env, dist, f) => C.inv(dist, f)->run(~env)->toFloatR

packages/squiggle-lang/src/rescript/Distributions/DistributionOperation.resi

@@ -49,6 +49,10 @@ module Constructors: {
   @genType
   let mean: (~env: env, genericDist) => result<float, error>
   @genType
+  let stdev: (~env: env, genericDist) => result<float, error>
+  @genType
+  let variance: (~env: env, genericDist) => result<float, error>
+  @genType
   let sample: (~env: env, genericDist) => result<float, error>
   @genType
   let cdf: (~env: env, genericDist, float) => result<float, error>

packages/squiggle-lang/src/rescript/Distributions/DistributionTypes.res

@@ -30,9 +30,9 @@ module Error = {
   @genType
   let toString = (err: error): string =>
     switch err {
-    | NotYetImplemented => "Function Not Yet Implemented"
+    | NotYetImplemented => "Function not yet implemented"
     | Unreachable => "Unreachable"
-    | DistributionVerticalShiftIsInvalid => "Distribution Vertical Shift is Invalid"
+    | DistributionVerticalShiftIsInvalid => "Distribution vertical shift is invalid"
     | ArgumentError(s) => `Argument Error ${s}`
     | LogarithmOfDistributionError(s) => `Logarithm of input error: ${s}`
     | SampleSetError(TooFewSamples) => "Too Few Samples"
@@ -68,6 +68,11 @@ module DistributionOperation = {
     | #Mean
     | #Sample
     | #IntegralSum
+    | #Mode
+    | #Stdev
+    | #Min
+    | #Max
+    | #Variance
   ]
 
   type toScaleFn = [
@@ -117,6 +122,11 @@ module DistributionOperation = {
     | ToFloat(#Cdf(r)) => `cdf(${E.Float.toFixed(r)})`
     | ToFloat(#Inv(r)) => `inv(${E.Float.toFixed(r)})`
     | ToFloat(#Mean) => `mean`
+    | ToFloat(#Min) => `min`
+    | ToFloat(#Max) => `max`
+    | ToFloat(#Stdev) => `stdev`
+    | ToFloat(#Variance) => `variance`
+    | ToFloat(#Mode) => `mode`
     | ToFloat(#Pdf(r)) => `pdf(${E.Float.toFixed(r)})`
     | ToFloat(#Sample) => `sample`
     | ToFloat(#IntegralSum) => `integralSum`
@@ -151,6 +161,8 @@ module Constructors = {
   module UsingDists = {
     @genType
     let mean = (dist): t => FromDist(ToFloat(#Mean), dist)
+    let stdev = (dist): t => FromDist(ToFloat(#Stdev), dist)
+    let variance = (dist): t => FromDist(ToFloat(#Variance), dist)
     let sample = (dist): t => FromDist(ToFloat(#Sample), dist)
     let cdf = (dist, x): t => FromDist(ToFloat(#Cdf(x)), dist)
     let inv = (dist, x): t => FromDist(ToFloat(#Inv(x)), dist)

packages/squiggle-lang/src/rescript/Distributions/GenericDist.res

@@ -108,7 +108,7 @@ let toFloatOperation = (
 ) => {
   switch distToFloatOperation {
   | #IntegralSum => Ok(integralEndY(t))
-  | (#Pdf(_) | #Cdf(_) | #Inv(_) | #Mean | #Sample) as op => {
+  | (#Pdf(_) | #Cdf(_) | #Inv(_) | #Mean | #Sample | #Min | #Max) as op => {
       let trySymbolicSolution = switch (t: t) {
       | Symbolic(r) => SymbolicDist.T.operate(op, r)->E.R.toOption
       | _ => None
@@ -118,6 +118,8 @@ let toFloatOperation = (
       | (SampleSet(sampleSet), #Mean) => SampleSetDist.mean(sampleSet)->Some
       | (SampleSet(sampleSet), #Sample) => SampleSetDist.sample(sampleSet)->Some
       | (SampleSet(sampleSet), #Inv(r)) => SampleSetDist.percentile(sampleSet, r)->Some
+      | (SampleSet(sampleSet), #Min) => SampleSetDist.min(sampleSet)->Some
+      | (SampleSet(sampleSet), #Max) => SampleSetDist.max(sampleSet)->Some
       | _ => None
       }
 
@@ -130,6 +132,16 @@ let toFloatOperation = (
         }
       }
     }
+  | (#Stdev | #Variance | #Mode) as op =>
+    switch t {
+    | SampleSet(s) =>
+      switch op {
+      | #Stdev => SampleSetDist.stdev(s)->Ok
+      | #Variance => SampleSetDist.variance(s)->Ok
+      | #Mode => SampleSetDist.mode(s)->Ok
+      }
+    | _ => Error(DistributionTypes.NotYetImplemented)
+    }
   }
 }
 

packages/squiggle-lang/src/rescript/Distributions/PointSetDist/PointSetDist.res

@@ -254,6 +254,8 @@ let operate = (distToFloatOp: Operation.distToFloatOperation, s): float =>
   | #Inv(f) => inv(f, s)
   | #Sample => sample(s)
   | #Mean => T.mean(s)
+  | #Min => T.minX(s)
+  | #Max => T.maxX(s)
   }
 
 let toSparkline = (t: t, bucketCount): result<string, PointSetTypes.sparklineError> =>

packages/squiggle-lang/src/rescript/Distributions/SymbolicDist/SymbolicDist.res

@@ -449,6 +449,8 @@ module T = {
     | #Cdf(f) => Ok(cdf(f, s))
     | #Pdf(f) => Ok(pdf(f, s))
     | #Inv(f) => Ok(inv(f, s))
+    | #Min => Ok(min(s))
+    | #Max => Ok(max(s))
     | #Sample => Ok(sample(s))
     | #Mean => mean(s)
     }

packages/squiggle-lang/src/rescript/Reducer/Reducer_Peggy/Reducer_Peggy_GeneratedParser.peggy

@@ -224,31 +224,23 @@ postOperator = indexedValue
 
 indexedValue
   = collectionElement
-  / recordElement
   / atom
 
-  collectionElement
+collectionElement
-    = head:atom &('['/'('/'.')
+  = head:atom &('['/'('/'.')
-      tail:(
+    tail:(
-        _ '[' _nl arg:expression  _nl ']' {return {fn: postOperatorToFunction['[]'], args: [arg]}}
+      _ '[' _nl arg:expression  _nl ']' {return {fn: postOperatorToFunction['[]'], args: [arg]}}
-      / _ '(' _nl args:array_functionArguments  _nl ')' {return {fn: postOperatorToFunction['()'], args: args}}
+    / _ '(' _nl args:array_functionArguments  _nl ')' {return {fn: postOperatorToFunction['()'], args: args}}
-      / '.' arg:$dollarIdentifier {return {fn: postOperatorToFunction['[]'], args: [nodeString(arg)]}}
+    / '.' arg:$dollarIdentifier {return {fn: postOperatorToFunction['[]'], args: [nodeString(arg)]}}
-      )* 
+    )* 
-    { return tail.reduce(function(result, element) {
+  { return tail.reduce(function(result, element) {
-        return makeFunctionCall(element.fn, [result, ...element.args])
+      return makeFunctionCall(element.fn, [result, ...element.args])
-      }, head)}
+    }, head)}
 
     array_functionArguments 
       = head:expression tail:(_ ',' _nl @expression)* 
       { return [head, ...tail]; }
 
-recordElement
-  = head:dollarIdentifier &'.' 
-    tail:(_ '.' _nl arg:$dollarIdentifier {return {fn: postOperatorToFunction['.'],  args: [nodeString(arg)]}})* 
-  { return tail.reduce(function(result, element) {
-      return makeFunctionCall(element.fn, [result, ...element.args])
-    }, head)}
-
 atom
   = '(' _nl expression:expression _nl ')' {return expression}
   / basicValue
@@ -259,19 +251,36 @@ basicLiteral
   = string
   / number
   / boolean
+  / dollarIdentifierWithModule
   / dollarIdentifier
 
+dollarIdentifierWithModule 'identifier'
+  = head:moduleIdentifier 
+    tail:('.' _nl @moduleIdentifier)* '.' _nl 
+    final:dollarIdentifier
+  { tail.push(final);
+    return tail.reduce(function(result, element) {
+      return makeFunctionCall(postOperatorToFunction['[]'], [result, element])
+    }, head)}
+
 identifier 'identifier'
   = ([_a-z]+[_a-z0-9]i*) {return nodeIdentifier(text())} 
 
+unitIdentifier 'identifier'
+  = ([_a-zA-Z]+[_a-z0-9]i*) {return nodeIdentifier(text())} 
+
 dollarIdentifier '$identifier'
   = ([\$_a-z]+[\$_a-z0-9]i*) {return nodeIdentifier(text())} 
 
+moduleIdentifier 'identifier'
+  = ([A-Z]+[_a-z0-9]i*) {return nodeIdentifier(text())} 
+
+
 string 'string'
   = characters:("'" @([^'])* "'") {return nodeString(characters.join(''))} 
   / characters:('"' @([^"])* '"') {return nodeString(characters.join(''))}
 
-number = number:(float / integer) unit:identifier?
+number = number:(float / integer) unit:unitIdentifier?
   { 
     if (unit === null)
       { return number }
@@ -335,7 +344,7 @@ recordConstructor  'record'
 _ 'whitespace'
   = whiteSpaceCharactersOrComment*
 
-_nl 'optional whitespace or newline'
+_nl 'whitespace or newline'
   = (whiteSpaceCharactersOrComment / commentOrNewLine)*
 
 __ 'whitespace'

packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_Date.res

@@ -0,0 +1,27 @@
+module EV = ReducerInterface_ExpressionValue
+type expressionValue = EV.expressionValue
+
+let dispatch = (call: EV.functionCall, _: DistributionOperation.env): option<
+  result<expressionValue, QuriSquiggleLang.Reducer_ErrorValue.errorValue>,
+> => {
+  switch call {
+  | ("toString", [EvDate(t)]) => EV.EvString(DateTime.Date.toString(t))->Ok->Some
+  | ("makeDateFromYear", [EvNumber(year)]) =>
+    switch DateTime.Date.makeFromYear(year) {
+    | Ok(t) => EV.EvDate(t)->Ok->Some
+    | Error(e) => Reducer_ErrorValue.RETodo(e)->Error->Some
+    }
+  | ("dateFromNumber", [EvNumber(f)]) => EV.EvDate(DateTime.Date.fromFloat(f))->Ok->Some
+  | ("toNumber", [EvDate(f)]) => EV.EvNumber(DateTime.Date.toFloat(f))->Ok->Some
+  | ("subtract", [EvDate(d1), EvDate(d2)]) =>
+    switch DateTime.Date.subtract(d1, d2) {
+    | Ok(d) => EV.EvTimeDuration(d)->Ok
+    | Error(e) => Error(RETodo(e))
+    }->Some
+  | ("subtract", [EvDate(d1), EvTimeDuration(d2)]) =>
+    EV.EvDate(DateTime.Date.subtractDuration(d1, d2))->Ok->Some
+  | ("add", [EvDate(d1), EvTimeDuration(d2)]) =>
+    EV.EvDate(DateTime.Date.addDuration(d1, d2))->Ok->Some
+  | _ => None
+  }
+}

packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_Duration.res

@@ -1,32 +1,7 @@
 module EV = ReducerInterface_ExpressionValue
 type expressionValue = EV.expressionValue
 
-let dateDispatch = (call: EV.functionCall, _: DistributionOperation.env): option<
+let dispatch = (call: EV.functionCall, _: DistributionOperation.env): option<
-  result<expressionValue, QuriSquiggleLang.Reducer_ErrorValue.errorValue>,
-> => {
-  switch call {
-  | ("toString", [EvDate(t)]) => EV.EvString(DateTime.Date.toString(t))->Ok->Some
-  | ("makeDateFromYear", [EvNumber(year)]) =>
-    switch DateTime.Date.makeFromYear(year) {
-    | Ok(t) => EV.EvDate(t)->Ok->Some
-    | Error(e) => Reducer_ErrorValue.RETodo(e)->Error->Some
-    }
-  | ("dateFromNumber", [EvNumber(f)]) => EV.EvDate(DateTime.Date.fromFloat(f))->Ok->Some
-  | ("toNumber", [EvDate(f)]) => EV.EvNumber(DateTime.Date.toFloat(f))->Ok->Some
-  | ("subtract", [EvDate(d1), EvDate(d2)]) =>
-    switch DateTime.Date.subtract(d1, d2) {
-    | Ok(d) => EV.EvTimeDuration(d)->Ok
-    | Error(e) => Error(RETodo(e))
-    }->Some
-  | ("subtract", [EvDate(d1), EvTimeDuration(d2)]) =>
-    EV.EvDate(DateTime.Date.subtractDuration(d1, d2))->Ok->Some
-  | ("add", [EvDate(d1), EvTimeDuration(d2)]) =>
-    EV.EvDate(DateTime.Date.addDuration(d1, d2))->Ok->Some
-  | _ => None
-  }
-}
-
-let durationDispatch = (call: EV.functionCall, _: DistributionOperation.env): option<
   result<expressionValue, QuriSquiggleLang.Reducer_ErrorValue.errorValue>,
 > => {
   switch call {
@@ -55,16 +30,3 @@ let durationDispatch = (call: EV.functionCall, _: DistributionOperation.env): op
   | _ => None
   }
 }
-
-let dispatch = (call: EV.functionCall, env: DistributionOperation.env): option<
-  result<expressionValue, QuriSquiggleLang.Reducer_ErrorValue.errorValue>,
-> => {
-  switch dateDispatch(call, env) {
-  | Some(r) => Some(r)
-  | None =>
-    switch durationDispatch(call, env) {
-    | Some(r) => Some(r)
-    | None => None
-    }
-  }
-}

packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_ExternalLibrary.res

@@ -14,15 +14,27 @@ type expressionValue = ExpressionValue.expressionValue
   Map external calls of Reducer
 */
 
+// I expect that it's important to build this first, so it doesn't get recalculated for each tryRegistry() call.
+let registry = FunctionRegistry_Library.registry
+
+let tryRegistry = ((fnName, args): ExpressionValue.functionCall, env) => {
+  FunctionRegistry_Core.Registry.matchAndRun(~registry, ~fnName, ~args, ~env)->E.O2.fmap(
+    E.R2.errMap(_, s => Reducer_ErrorValue.RETodo(s)),
+  )
+}
+
 let dispatch = (call: ExpressionValue.functionCall, environment, chain): result<
   expressionValue,
   'e,
-> =>
+> => {
-  switch ReducerInterface_GenericDistribution.dispatch(call, environment) {
+  E.A.O.firstSomeFn([
-  | Some(r) => r
+    () => ReducerInterface_GenericDistribution.dispatch(call, environment),
-  | None =>
+    () => ReducerInterface_Date.dispatch(call, environment),
-    ReducerInterface_DateTime.dispatch(call, environment) |> E.O.default(chain(call, environment))
+    () => ReducerInterface_Duration.dispatch(call, environment),
-  }
+    () => ReducerInterface_Number.dispatch(call, environment),
+    () => tryRegistry(call, environment),
+  ])->E.O2.default(chain(call, environment))
+}
 /*
 If your dispatch is too big you can divide it into smaller dispatches and pass the call so that it gets called finally.
 

packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_GenericDistribution.res

@@ -207,7 +207,18 @@ let dispatchToGenericOutput = (
   | ("sample", [EvDistribution(dist)]) => Helpers.toFloatFn(#Sample, dist, ~env)
   | ("sampleN", [EvDistribution(dist), EvNumber(n)]) =>
     Some(FloatArray(GenericDist.sampleN(dist, Belt.Int.fromFloat(n))))
-  | ("mean", [EvDistribution(dist)]) => Helpers.toFloatFn(#Mean, dist, ~env)
+  | (("mean" | "stdev" | "variance" | "min" | "max" | "mode") as op, [EvDistribution(dist)]) => {
+      let fn = switch op {
+      | "mean" => #Mean
+      | "stdev" => #Stdev
+      | "variance" => #Variance
+      | "min" => #Min
+      | "max" => #Max
+      | "mode" => #Mode
+      | _ => #Mean
+      }
+      Helpers.toFloatFn(fn, dist, ~env)
+    }
   | ("integralSum", [EvDistribution(dist)]) => Helpers.toFloatFn(#IntegralSum, dist, ~env)
   | ("toString", [EvDistribution(dist)]) => Helpers.toStringFn(ToString, dist, ~env)
   | ("toSparkline", [EvDistribution(dist)]) =>
@@ -348,20 +359,5 @@ let genericOutputToReducerValue = (o: DistributionOperation.outputType): result<
   | GenDistError(err) => Error(REDistributionError(err))
   }
 
-// I expect that it's important to build this first, so it doesn't get recalculated for each tryRegistry() call.
+let dispatch = (call: ExpressionValue.functionCall, environment) =>
-let registry = FunctionRegistry_Library.registry
+  dispatchToGenericOutput(call, environment)->E.O2.fmap(genericOutputToReducerValue)
-
-let tryRegistry = ((fnName, args): ExpressionValue.functionCall, env) => {
-  FunctionRegistry_Core.Registry.matchAndRun(~registry, ~fnName, ~args, ~env)->E.O2.fmap(
-    E.R2.errMap(_, s => Reducer_ErrorValue.RETodo(s)),
-  )
-}
-
-let dispatch = (call: ExpressionValue.functionCall, environment) => {
-  let regularDispatch =
-    dispatchToGenericOutput(call, environment)->E.O2.fmap(genericOutputToReducerValue)
-  switch regularDispatch {
-  | Some(x) => Some(x)
-  | None => tryRegistry(call, environment)
-  }
-}

packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_Number.res

@@ -0,0 +1,45 @@
+module EV = ReducerInterface_ExpressionValue
+type expressionValue = EV.expressionValue
+
+module ScientificUnit = {
+  let nameToMultiplier = str =>
+    switch str {
+    | "n" => Some(1E-9)
+    | "m" => Some(1E-3)
+    | "k" => Some(1E3)
+    | "M" => Some(1E6)
+    | "B" => Some(1E9)
+    | "G" => Some(1E9)
+    | "T" => Some(1E12)
+    | "P" => Some(1E15)
+    | _ => None
+    }
+
+  let getMultiplier = (r: string) => {
+    let match = Js.String2.match_(r, %re(`/fromUnit_([_a-zA-Z]*)/`))
+    switch match {
+    | Some([_, unit]) => nameToMultiplier(unit)
+    | _ => None
+    }
+  }
+}
+
+let dispatch = (call: EV.functionCall, _: DistributionOperation.env): option<
+  result<expressionValue, QuriSquiggleLang.Reducer_ErrorValue.errorValue>,
+> => {
+  switch call {
+  | (
+      ("fromUnit_n"
+      | "fromUnit_m"
+      | "fromUnit_k"
+      | "fromUnit_M"
+      | "fromUnit_B"
+      | "fromUnit_G"
+      | "fromUnit_T"
+      | "fromUnit_P") as op,
+      [EvNumber(f)],
+    ) =>
+    op->ScientificUnit.getMultiplier->E.O2.fmap(multiplier => EV.EvNumber(f *. multiplier)->Ok)
+  | _ => None
+  }
+}

packages/squiggle-lang/src/rescript/Utility/Operation.res

@@ -26,6 +26,8 @@ type distToFloatOperation = [
   | #Inv(float)
   | #Mean
   | #Sample
+  | #Min
+  | #Max
 ]
 
 module Convolution = {

packages/website/package.json

@@ -16,7 +16,6 @@
     "@docusaurus/preset-classic": "2.0.0-beta.21",
     "@quri/squiggle-components": "^0.2.20",
     "clsx": "^1.1.1",
-    "docusaurus-tailwindcss": "^0.1.0",
     "hast-util-is-element": "2.1.2",
     "prism-react-renderer": "^1.3.3",
     "react": "^18.1.0",