46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
import { BinaryContract, PseudoNumericContract } from './contract'
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import { formatLargeNumber, formatPercent } from './util/format'
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export function formatNumericProbability(
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p: number,
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contract: PseudoNumericContract
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) {
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const value = getMappedValue(contract)(p)
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return formatLargeNumber(value)
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}
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export const getMappedValue =
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(contract: PseudoNumericContract | BinaryContract) => (p: number) => {
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if (contract.outcomeType === 'BINARY') return p
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const { min, max, isLogScale } = contract
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if (isLogScale) {
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const logValue = p * Math.log10(max - min + 1)
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return 10 ** logValue + min - 1
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}
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return p * (max - min) + min
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}
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export const getFormattedMappedValue =
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(contract: PseudoNumericContract | BinaryContract) => (p: number) => {
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if (contract.outcomeType === 'BINARY') return formatPercent(p)
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const value = getMappedValue(contract)(p)
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return formatLargeNumber(value)
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}
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export const getPseudoProbability = (
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value: number,
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min: number,
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max: number,
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isLogScale = false
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) => {
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if (isLogScale) {
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return Math.log10(value - min + 1) / Math.log10(max - min + 1)
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}
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return (value - min) / (max - min)
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}
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