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How to use nestedPromises method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

Model.js

Source:Model.js

1import _ from 'underscore';2import logger from '../core/Logger';3import config from '../config';4class Model {5	/**6	 * returns promise of this model.7	 */8	constructor(options,data) {9		if (config.models) {10			this._modelConfig = _.assign({}, config.models.common, config.models[this.getType()]);11		}12		if(data){13			var self = this;14			var resolvePromise = this.resolveForLocal(data); // todo do we ever need both options and data?15			this.ready = new Promise(function(resolve,reject){16				resolvePromise.then(function(opts){17					_.assign(self,opts);18					delete self._modelConfig;19					resolve();20				});21			});22		} else {23			_.assign(this,this.prepareModel(options));24			delete this._modelConfig;25			this.ready = Promise.resolve();26		}27	}28	/**29	 * Prepare promise for all the properties, which are actual domain objects.30	 * @param data Object with data from the API.31	 * @param model Optional - model for resolving nested objects32	 * @param self Optional - this (for nested)33	 */34	resolveForLocal(data, model, self) {35		//var self = this;36		var ret = {};37		var promises = [];38		if(!self){39			self = this;40		}41		if(!model) {42			model = self.data();43			if (config.models && self._modelConfig) {44				// only allow first level keys allowed in config45				//todo this doesn't work (omit returns, not mutates), but who knows what a fix will do46				//_.omit(model,function(keyProps, key) {47				//	return !self._modelConfig[key];48				//});49			}50		}51		_.each(model, function (keyProps, key) {52			if (keyProps.isArrayOfNested) {53				if(data[keyProps.serverName]) {54					let nestedPromises = [];55					for (var nested of data[keyProps.serverName]) {56						let nestedPromise = self.resolveForLocal(nested, model[key].model, self);57						nestedPromises.push(nestedPromise);58					}59					Promise.all(nestedPromises).then(function(arrayOfNested){60						ret[key] = arrayOfNested;61					}).catch(error => {62						logger.error(`Model# resolveForLocal() Failed to resolve nested promises. Error: ${error} | data:`, data);63					});64					promises.push(Promise.all(nestedPromises));65				} else {66					ret[key] = [];67				}68			}	else if (keyProps.isNested) {69				if(data[keyProps.serverName]) {70					let nestedPromise = self.resolveForLocal(data[keyProps.serverName], model[key].model, self);71					nestedPromise.then(function(transformedNestedData){72						if (73							!keyProps.ignoreEmpty ||74							Object.keys(_.pick(transformedNestedData, _.identity)).length75						) {76							ret[key] = transformedNestedData;77						}78					}).catch(error => {79						logger.error(`Model# resolveForLocal() Failed to resolve nested promise data. Error: ${error} | data:`, data);80					});81					promises.push(nestedPromise);82				} else if (!keyProps.ignoreEmpty) {83					ret[key] = {};84				}85			} else {86				if (keyProps.isPromise) {87					let promise = keyProps.transformForLocal(data[keyProps.serverName], data);88					promise.then(function(transformedData){89						ret[key] = transformedData;90					}).catch(error => {91						logger.error(`Model# resolveForLocal() Failed to resolve data. Error: ${error} | data:`, data, '| key: ', key, '| keyProps:', keyProps);92					});93					promises.push(promise);94				} else if (!keyProps.ignoreEmpty || !!data[keyProps.serverName]) {95					if (keyProps.transformForLocal) {96						ret[key] = keyProps.transformForLocal(data[keyProps.serverName], data);97					} else {98						ret[key] = data[keyProps.serverName];99					}100				}101			}102		});103		return new Promise(function (resolve, reject) {104			Promise.all(promises).then(function(){105				resolve(ret);106			});107		});108	}109	/**110	 * Called on options when creating model locally. To be overriden.111	 * @param options112	 * @returns {*}113	 */114	prepareModel(options) {115		return options;116	}117	/**118	 * get asociated object type from constants/ObjectTypes119	 */120	getType() {121		return 'common';122	}123	/**124	 * Transform self for server125	 */126	serialize() {127		return this.serializeModel(this,this.data());128	}129	/**130	 * Transform model for server131	 */132	serializeModel(object, model) {133		var self = this;134		var serializedObject = {};135		_.each(object, function (value, key) {136			if(key!=="ready" && model[key].sendToServer) {137				if(model[key].hasOwnProperty("isArrayOfNested") && model[key].isArrayOfNested) {138					for (var i in value) {139						value[i] = self.serializeModel(value[i], model[key].model);140					}141				} else if (model[key].hasOwnProperty("isNested") && model[key].isNested) {142					value = self.serializeModel(value, model[key].model);143				} else if (model[key].hasOwnProperty("transformForServer")){144					value = model[key].transformForServer(value, object);145				}146				key = model[key].serverName;147				serializedObject[key] = value;148			}149		});150		logger.trace("Model# serializeModel(), Serialized object:",serializedObject);151		return serializedObject;152	}153	// todo static?154	transformDate(dateString) {155		if (dateString) return new Date(dateString);156		return null;157	}158	getKey(model) {159		return (model) ? model.key : null;160	}161	getKeys(models) {162		let keys = [];163		for (let model of models) {164			keys.push(model.key);165		}166		return keys;167	}168}...

crawler.js

Source:crawler.js

1const fs = require('fs');2const {JSDOM} = require('jsdom');3const path = require('path');4async function getImages(host, depth, currentDepth) {5    const domContent = await fetch(host).then(data => data.text()).catch(e => console.log(e));6    const dom = new JSDOM(domContent)7    const images = [...dom.window.document.body.querySelectorAll('img')].map(item => ({8        imageUrl: item.src,9        sourceUrl: host,10        depth: currentDepth,11    }));12    if (depth === currentDepth) {13        return images;14    }15    const nestedPromises = [...dom.window.document.body.querySelectorAll('a')].map(item => item.href).map((link) => {    16        const linkToGo = link.includes('http') ? link : `${host}${link}`;17        return getImages(linkToGo, depth, currentDepth + 1)18    });19    const nestedImages = (await Promise.all(nestedPromises)).flat()20    return [...images, ...nestedImages]21}22async function main(host, depth) {23    const res = await getImages(host, +depth, 0);24    fs.writeFileSync(path.resolve(__dirname, 'result.json'), JSON.stringify({25        results: res26    }))27}...

badWayNestedPromises.js

Source:badWayNestedPromises.js

...6         setTimeout(resolve,2000,newX);7      })8        9   }10   nestedPromises(1)11      .then(x=>nestedPromises(x))12      .then(x=>nestedPromises(x))13      .then(x=>nestedPromises(x))14      .then(x=>console.log(x))15}16 17nestingPromises();18// const doSomething=(x)=>{19//    const newX= x+1;20//    return Promise.resolve(newX);21// }22//  doSomething(0)23//   .then(x => {24//      doSomething(x)25//      .then(x=>{26//         doSomething(x).then(x=>console.log(x));27//      });...

Using AI Code Generation

1const { nestedPromises } = require('fast-check');2const myPromise = (i, j) => {3  return new Promise((resolve, reject) => {4    setTimeout(() => {5      resolve(i + j);6    }, 500);7  });8};9const myPromiseArb = nestedPromises((i, j) => myPromise(i, j));10  .generate(mrng)11  .then((value) => {12    console.log(value);13  })14  .catch((e) => {15    console.log('error', e);16  });

Using AI Code Generation

1import { nestedPromises } from 'fast-check'2const myPromise = (x) => {3  return new Promise((resolve, reject) => {4    setTimeout(() => {5      resolve(x + 1)6    }, 1000)7  })8}9const myPromise2 = (x) => {10  return new Promise((resolve, reject) => {11    setTimeout(() => {12      resolve(x + 2)13    }, 1000)14  })15}16const myPromise3 = (x) => {17  return new Promise((resolve, reject) => {18    setTimeout(() => {19      resolve(x + 3)20    }, 1000)21  })22}23const myPromise4 = (x) => {24  return new Promise((resolve, reject) => {25    setTimeout(() => {26      resolve(x + 4)27    }, 1000)28  })29}30const myPromise5 = (x) => {31  return new Promise((resolve, reject) => {32    setTimeout(() => {33      resolve(x + 5)34    }, 1000)35  })36}37const myPromise6 = (x) => {38  return new Promise((resolve, reject) => {39    setTimeout(() => {40      resolve(x + 6)41    }, 1000)42  })43}44const myPromise7 = (x) => {45  return new Promise((resolve, reject) => {46    setTimeout(() => {47      resolve(x + 7)48    }, 1000)49  })50}51const myPromise8 = (x) => {52  return new Promise((resolve, reject) => {53    setTimeout(() => {54      resolve(x + 8)55    }, 1000)56  })57}58const myPromise9 = (x) => {59  return new Promise((resolve, reject) => {60    setTimeout(() => {61      resolve(x + 9)62    }, 1000)63  })64}65const myPromise10 = (x) => {66  return new Promise((resolve, reject) => {67    setTimeout(() => {68      resolve(x + 10)69    }, 1000)70  })71}72const myPromise11 = (x) => {73  return new Promise((resolve, reject) => {74    setTimeout(() => {75      resolve(x + 11)76    }, 1000)77  })78}79const myPromise12 = (x) => {80  return new Promise((resolve, reject) => {81    setTimeout(() => {

Using AI Code Generation

1import { nestedPromises } from 'fast-check/lib/check/arbitrary/NestedArbitraryBuilder.js';2import { string } from 'fast-check/lib/check/arbitrary/StringArbitrary.js';3import { constant } from 'fast-check/lib/check/arbitrary/ConstantArbitrary.js';4import { tuple } from 'fast-check/lib/check/arbitrary/TupleArbitrary.js';5import { oneof } from 'fast-check/lib/check/arbitrary/OneOfArbitrary.js';6import { record } from 'fast-check/lib/check/arbitrary/RecordArbitrary.js';7import { set } from 'fast-check/lib/check/arbitrary/SetArbitrary.js';8import { array } from 'fast-check/lib/check/arbitrary/ArrayArbitrary.js';9import { integer } from 'fast-check/lib/check/arbitrary/IntegerArbitrary.js';10import { option } from 'fast-check/lib/check/arbitrary/OptionArbitrary.js';11import { map } from 'fast-check/lib/check/arbitrary/MapArbitrary.js';12import { dictionary } from 'fast-check/lib/check/arbitrary/DictionaryArbitrary.js';13import { float } from 'fast-check/lib/check/arbitrary/FloatArbitrary.js';14import { boolean } from 'fast-check/lib/check/arbitrary/BooleanArbitrary.js';15import { date } from 'fast-check/lib/check/arbitrary/DateArbitrary.js';16import { double } from 'fast-check/lib/check/arbitrary/DoubleArbitrary.js';17import { bigInt } from 'fast-check/lib/check/arbitrary/BigIntArbitrary.js';18import { bigUintN } from 'fast-check/lib/check/arbitrary/BigUintNArbitrary.js';19import { bigIntN } from 'fast-check/lib/check/arbitrary/BigIntNArbitrary.js';20import { char } from 'fast-check/lib/check/arbitrary/CharacterArbitrary.js';21import { unicode } from 'fast-check/lib/check/arbitrary/UnicodeArbitrary.js';22import { fullUnicode } from 'fast-check/lib/check/arbitrary/FullUnicodeArbitrary.js';23import { frequency } from 'fast-check/lib/check/arbitrary/FrequencyArbitrary.js';24import { base64 } from 'fast-check/lib/check/arbitrary/Base64Arbitrary.js';25import { base64Web } from 'fast-check/lib/check/arbitrary/Base64WebArbitrary.js';26import { base64Url } from

Using AI Code Generation

1const fc = require('fast-check');2const nestedPromises = require('fast-check/lib/check/arbitrary/nestedPromises.js');3const arb = fc.nat().map((n) => {4  return nestedPromises(fc.nat(), n);5});6fc.assert(fc.property(arb, (promise) => {7  return promise.then((value) => {8    return value;9  });10}));11{12  "dependencies": {13  },14  "devDependencies": {15  },16  "scripts": {17  },18}19module.exports = {20  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$',21  moduleNameMapper: {22    '^fast-check/lib/check/arbitrary/(.*)$': 'fast-check/lib/check/arbitrary/$1',23  },24};25{26}27module.exports = function (api) {28  api.cache(true);29      {30        targets: {31        },32      },33  ];34  const plugins = [];35  return {36  };37};

Using AI Code Generation

1const { nestedPromises } = require('fast-check');2const promiseFunction = (x) => {3  return new Promise((resolve, reject) => {4    if (x > 0) {5      resolve(x);6    } else {7      reject(new Error('x must be greater than 0'));8    }9  });10};11describe('promiseFunction', () => {12  it('should return a promise', () => {13    nestedPromises(promiseFunction, 1).then((result) => {14      expect(result).toBe(1);15    });16  });17});18{19  "scripts": {20  },21  "dependencies": {22  }23}

Using AI Code Generation

1const { nestedPromises } = require('fast-check');2const test = nestedPromises(() => {3    return Promise.resolve(1);4});5test().then((result) => {6    console.log(result);7});8const test = async () => {9    return Promise.resolve(1);10};11test().then((result) => {12    console.log(result);13});14const { nestedPromises } = require('fast-check');15const test = nestedPromises(() => {16    return Promise.resolve(1);17});18test().then((result) => {19    console.log(result);20});21const test = async () => {22    return Promise.resolve(1);23};24test().then((result) => {25    console.log(result);26});27const { nestedPromises } = require('fast-check');28const test = nestedPromises(() => {29    return Promise.resolve(1);30});31test().then((result) => {32    console.log(result);33});34const test = async () => {35    return Promise.resolve(1);36};37test().then((result) => {38    console.log(result);39});40const { nestedPromises } = require('fast-check');41const test = nestedPromises(() => {42    return Promise.resolve(1);43});44test().then((result) => {45    console.log(result);46});47const test = async () => {48    return Promise.resolve(1);49};50test().then((result) => {51    console.log(result);52});53const { nestedPromises } = require('fast-check');54const test = nestedPromises(() => {55    return Promise.resolve(

Using AI Code Generation

1const fc = require('fast-check');2const { nestedPromises } = require('fast-check-monorepo');3const idempotent = (f) => (a) => f(f(a)) === f(a);4const associative = (f) => (a, b) => f(a, b) === f(b, a);5const myFunction = (a, b) => a + b;6const idempotentTest = () => {7    return nestedPromises(() => fc.assert(fc.property(fc.integer(), idempotent(myFunction))));8};9const associativeTest = () => {10    return nestedPromises(() => fc.assert(fc.property(fc.integer(), fc.integer(), associative(myFunction))));11};12idempotentTest()13.then(associativeTest)14.then(() => console.log("Tests passed"))15.catch((err) => console.error("Tests failed", err));16{17  "scripts": {18  },19  "dependencies": {20  }21}22{23  "dependencies": {24    "fast-check": {

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