How to use buildReverseMapping method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

IndexToMappedConstant.ts

Source:IndexToMappedConstant.ts

...13}14/** @internal */15type ReverseMapping = { mapping: Map<unknown, number>; negativeZeroIndex: number | undefined };16/** @internal */17function buildReverseMapping(entries: { num: number; build: (idInGroup: number) => unknown }[]): ReverseMapping {18  const reverseMapping: ReverseMapping = { mapping: new Map(), negativeZeroIndex: undefined };19  let choiceIndex = 0;20  for (let entryIdx = 0; entryIdx !== entries.length; ++entryIdx) {21    const entry = entries[entryIdx];22    for (let idxInEntry = 0; idxInEntry !== entry.num; ++idxInEntry) {23      const value = entry.build(idxInEntry);24      // Remark:25      // >  Ideally we'd have used `Object.is(value, -0)` but for an unknown reason26      // >  when using node 10 in some very rare circumstances we get: -5e-324 is -0.27      // >  The scenario to reproduce the issue is very complex as it requires this code28      // >  and probably others to be run multiple times before triggering the bug.29      // >  See: https://github.com/dubzzz/fast-check/issues/184130      // >  Seems to be related to: https://bugs.chromium.org/p/chromium/issues/detail?id=903043&q=903043&can=231      // >  Fixed by: https://github.com/v8/v8/commit/56f6a763c27d77afbee997a50baa34996e97ba4032      if (value === 0 && 1 / value === Number.NEGATIVE_INFINITY) {33        reverseMapping.negativeZeroIndex = choiceIndex;34      } else {35        reverseMapping.mapping.set(value, choiceIndex);36      }37      ++choiceIndex;38    }39  }40  return reverseMapping;41}42/** @internal */43export function indexToMappedConstantUnmapperFor<T>(44  entries: { num: number; build: (idInGroup: number) => T }[]45): (value: unknown) => number {46  let reverseMapping: ReverseMapping | null = null;47  return function indexToMappedConstantUnmapper(value: unknown): number {48    if (reverseMapping === null) {49      reverseMapping = buildReverseMapping(entries);50    }51    const choiceIndex = Object.is(value, -0) ? reverseMapping.negativeZeroIndex : reverseMapping.mapping.get(value);52    if (choiceIndex === undefined) {53      throw new Error('Unknown value encountered cannot be built using this mapToConstant');54    }55    return choiceIndex;56  };...

Using AI Code Generation

1const fastCheck = require('fast-check');2const buildReverseMapping = fastCheck.buildReverseMapping;3const mapping = {a:1, b:2, c:3, d:4, e:5, f:6, g:7, h:8, i:9, j:10, k:11, l:12, m:13, n:14, o:15, p:16, q:17, r:18, s:19, t:20, u:21, v:22, w:23, x:24, y:25, z:26};4const reverseMapping = buildReverseMapping(mapping);5console.log(reverseMapping);6const fastCheck = require('fast-check');7const buildReverseMapping = fastCheck.buildReverseMapping;8const mapping = {a:1, b:2, c:3, d:4, e:5, f:6, g:7, h:8, i:9, j:10, k:11, l:12, m:13, n:14, o:15, p:16, q:17, r:18, s:19, t:20, u:21, v:22, w:23, x:24, y:25, z:26};

Using AI Code Generation

1const { buildReverseMapping } = require('fast-check-monorepo');2const str = 'hello';3const revStr = buildReverseMapping(str);4console.log(revStr);5const { buildReverseMapping } = require('fast-check-monorepo');6const str = 'hello';7const revStr = buildReverseMapping(str);8console.log(revStr);9const { buildReverseMapping } = require('fast-check-monorepo');10const str = 'hello';11const revStr = buildReverseMapping(str);12console.log(revStr);13const { buildReverseMapping } = require('fast-check-monorepo');14const str = 'hello';15const revStr = buildReverseMapping(str);16console.log(revStr);17const { buildReverseMapping } = require('fast-check-monorepo');18const str = 'hello';19const revStr = buildReverseMapping(str);20console.log(revStr);21const { buildReverseMapping } = require('fast-check-monorepo');22const str = 'hello';23const revStr = buildReverseMapping(str);24console.log(revStr);25const { buildReverseMapping } = require('fast-check-monorepo');26const str = 'hello';27const revStr = buildReverseMapping(str);28console.log(revStr);

Using AI Code Generation

1const { buildReverseMapping } = require('fast-check-monorepo');2const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];3const square = (x) => x * x;4const reverseMapping = buildReverseMapping(square, array);5console.log(reverseMapping);6const { buildReverseMapping } = require('fast-check-monorepo');7const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];8const square = (x) => x * x;9const reverseMapping = buildReverseMapping(square, array, (a, b) => a % 10 === b % 10);10console.log(reverseMapping);11const { buildReverseMapping } = require('fast-check-monorepo');

Using AI Code Generation

1const buildReverseMapping = require('fast-check-monorepo').buildReverseMapping;2const input = "Hello World!";3const output = buildReverseMapping(input);4console.log(output);5const buildReverseMapping = require('fast-check-monorepo').buildReverseMapping;6const input = "Hello World!";7const output = buildReverseMapping(input);8console.log(output);9const buildReverseMapping = require('fast-check-monorepo').buildReverseMapping;10const input = "Hello World!";11const output = buildReverseMapping(input);12console.log(output);13const buildReverseMapping = require('fast-check-monorepo').buildReverseMapping;14const input = "Hello World!";15const output = buildReverseMapping(input);16console.log(output);17const buildReverseMapping = require('fast-check-monorepo').buildReverseMapping;

Using AI Code Generation

1const { buildReverseMapping } = require('fast-check-monorepo');2const list = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];3const reverseMapping = buildReverseMapping(list, list);4const searchString = "a";5const listForSearchString = reverseMapping.get(searchString);6console.log(listForSearchString);

Using AI Code Generation

1const { buildReverseMapping } = require('fast-check');2const { string } = require('fast-check');3const mapping = buildReverseMapping(string(), string(), 1000);4const aToB = mapping[0];5const bToA = mapping[1];6const aToBStrings = [];7const bToAStrings = [];8for (let i = 0; i < 1000; i++) {9  aToBStrings.push(aToB());10  bToAStrings.push(bToA());11}12console.log(aToBStrings);13console.log(bToAStrings);14const { buildReverseMapping } = require('fast-check');15const { string } = require('fast-check');16const mapping = buildReverseMapping(string(), string(), 1000);17const aToB = mapping[0];18const bToA = mapping[1];19const aToBStrings = [];20const bToAStrings = [];21for (let i = 0; i < 1000; i++) {22  aToBStrings.push(aToB());23  bToAStrings.push(bToA());24}25console.log(aToBStrings);26console.log(bToAStrings);27const { buildReverseMapping } = require('fast-check');28const { string } = require('fast-check');29const mapping = buildReverseMapping(string(), string(), 1000);30const aToB = mapping[0];31const bToA = mapping[1];32const aToBStrings = [];33const bToAStrings = [];34for (let i = 0; i < 1000;

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