How to use nextFlags method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

patch.js

Source:patch.js Github

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1import { VNodeFlags, ChildrenFlags } from './flags'2import mount from './mount'3import options from './options'4const {5 removeChild,6 insertBefore7} = options8// 比较原则:同类比较9export default function patch(preVnode, nextVnode, container) {10 const preFlags = preVnode.flags11 const nextFlags = nextVnode.flags12 // 首先判断是否是同类vnode,同类才有比较意义,否则拆除换新13 if (preFlags & nextFlags) {14 if (preVnode.tag !== nextVnode.tag) {15 // 不是同类节点,直接替换16 mount(nextVnode, container, getRef(preVnode))17 removeChild(preVnode, container)18 } else {19 if (nextFlags & VNodeFlags.COMPONENT) {20 // 组件对比21 patchComponent(preVnode, nextVnode, container, nextFlags)22 } else if (nextFlags & VNodeFlags.TEXT_VNODE) {23 patchText(preVnode, nextVnode)24 } else if (nextFlags & VNodeFlags.FRAGMENT) {25 patchFragment(preVnode, nextVnode, container)26 } else if (nextFlags & VNodeFlags.PORTAL) {27 patchPortal(preVnode, nextVnode)28 } else {29 // 非组件时的情况30 const el = (nextVnode.el = preVnode.el)31 // 对比数据32 const preData = preVnode.data33 const nextData = nextVnode.data34 if (nextData) {35 for (let key in nextData) {36 patchData(el, key, preData[key], nextData[key])37 }38 }39 if (preData) {40 for (let key in preData) {41 const preValue = preData[key]42 if (preValue && !nextData.hasOwnProperty(key)) {43 // 删除新数据中不存在的属性44 patchData(el, key, preValue, null)45 }46 }47 }48 // 对比子节点49 patchChildren(preVnode.children, nextVnode.children, preVnode.childFlags, nextVnode.childFlags, el)50 }51 }52 } else {53 removeChild(preVnode, container)54 mount(nextVnode, container)55 }56}57const eventReg = /^on/58const domPropsReg = /^value|^checked|^selected|[A-Z]/59export function patchData(el, key, preValue, nextValue) {60 switch (key) {61 case 'style': {62 if (preValue && !nextValue) {63 for (let k in preValue) {64 el.style.removeProperty(k)65 }66 }67 if (nextValue) {68 for (let k in nextValue) {69 el.style.setProperty(k, nextValue[k])70 }71 }72 break73 }74 case 'class': {75 // 类名格式 { a: true, b: false }76 if (preValue && !nextValue) {77 for (let k in preValue) {78 preValue[k] && el.classList.remove(k)79 }80 }81 if (nextValue) {82 for (let k in nextValue) {83 nextValue[k] && el.classList.add(k)84 }85 }86 break87 }88 default: {89 if (eventReg.test(key)) {90 key = key.replace(evnetReg, '')91 if (preValue) {92 el.removeEventListener(key, preValue)93 }94 if (nextValue) {95 el.addEventListener(key, nextValue)96 }97 } else if (domPropsReg.test(key)) {98 if (preValue && !nextValue) {99 el[key] = ''100 }101 if (nextValue) {102 el[key] = nextValue103 }104 } else {105 // 普通attr106 if (preValue && !nextValue) {107 el.removeAttribute(key)108 }109 if (nextValue) {110 el.setAttribute(key, nextValue)111 }112 }113 }114 }115}116// 对比文本117function patchText(preVnode, nextVnode) {118 if (preVnode.children !== nextVnode.children) {119 const el = (nextVnode.el = preVnode.el)120 el.nodeValue = nextVnode.children121 }122}123// 对比Fragment124function patchFragment(preVnode, nextVnode, container) {125 // Fragment本质就是对比子节点,但挂载点为Fragment父节点126 const ref = getFragmentRef(preVnode)127 patchChildren(128 preVnode.children,129 nextVnode.children,130 preVnode.childFlags,131 nextVnode.childFlags,132 container,133 // 在Fragment的patch之前,Fragment中最后一个子节点的下一个元素,就是preVnode最后一个子节点的下一个元素134 // 这样做的目的是为了保证Fragment子节点的插入位置,因为不做ref标记,可能子节点在patch时会直接被插入父容器尾部135 ref136 )137 // 比较完成后设置nextValue的引用el138 const childFlags = nextVnode.childFlags139 if (childFlags & ChildrenFlags.NO_CHILDREN) {140 // 没有子节点,el用占位的空文本节点代替141 nextVnode.el = document.createTextNode('')142 } else if (childFlags & ChildrenFlags.SINGLE_CHILDREN) {143 nextVnode.el = nextVnode.children.el144 } else if (childFlags & ChildrenFlags.MULTI_CHILDREN) {145 nextVnode.el = nextVnode.children[0].el146 }147}148function getFragmentRef(vnode) {149 const childFlags = vnode.childFlags150 switch (childFlags) {151 case ChildrenFlags.NO_CHILDREN:152 return vnode.el153 case ChildrenFlags.SINGLE_CHILDREN:154 return getNextRef(vnode.children)155 case ChildrenFlags.MULTI_CHILDREN:156 return getNextRef(vnode.children[vnode.children.length - 1])157 }158}159function getNextRef(vnode) {160 return getRef(vnode).nextSibling161}162function getRef(vnode) {163 if (vnode.flags & VNodeFlags.COMPONENT) {164 if (vnode.flags & VNodeFlags.COMPONENT_STATEFUL) {165 return getRef(vnode.children._vnode)166 } else {167 return getRef(vnode.handle.next)168 }169 } else {170 return vnode.el171 }172}173function patchPortal(preVnode, nextVnode) {174 patchChildren(175 preVnode.children,176 nextVnode.children,177 preVnode.childFlags,178 nextVnode.childFlags,179 // 先在旧容器中进行更新180 preVnode.tag181 )182 nextVnode.el = preVnode.el183 // 更新完子节点后,如果新容器与旧容器不同,则转移元素184 const container = nextVnode.tag = document.querySelector(nextVnode.tag)185 if (preVnode.tag !== nextVnode.tag) {186 insertBefore(nextVnode.children, container, null)187 }188}189function patchChildren(preChildren, nextChildren, preFlags, nextFlags, container, refNext = null) {190 switch (preFlags) {191 case ChildrenFlags.NO_CHILDREN:192 switch (nextFlags) {193 case ChildrenFlags.SINGLE_CHILDREN:194 // 原本有没有节点,现在有一个子节点,直接挂载上去195 mount(nextChildren, container)196 break197 case ChildrenFlags.MULTI_CHILDREN:198 // 现在有多个子节点199 mount(nextChildren, container)200 break201 }202 break203 case ChildrenFlags.SINGLE_CHILDREN:204 switch (nextFlags) {205 case ChildrenFlags.NO_CHILDREN:206 // 原本有一个,现在没有,直接删除原本的节点207 removeChild(preChildren, container)208 break209 case ChildrenFlags.SINGLE_CHILDREN:210 // 原本有一个,现在也是一个,直接深度对比211 patch(preChildren, nextChildren, container)212 break213 case ChildrenFlags.MULTI_CHILDREN:214 // 原本是一个,现在是多个,拆除原本的,挂载新的215 removeChild(preChildren, container)216 mount(nextChildren, container)217 break218 }219 break220 case ChildrenFlags.MULTI_CHILDREN:221 switch (nextFlags) {222 case ChildrenFlags.NO_CHILDREN:223 // 原本多个,现在没有,删除原本的全部224 for (let i = 0; i < preChildren.length; i++) {225 removeChild(preChildren[i], container)226 }227 break228 case ChildrenFlags.SINGLE_CHILDREN:229 // 原本多个,现在一个,删除原本的全部,挂载新的230 for (let i = 0; i < preChildren.length; i++) {231 removeChild(preChildren[i], container)232 }233 mount(nextChildren, container)234 break235 case ChildrenFlags.MULTI_CHILDREN:236 // 前后都是多个子节点,核心diff算法237 patchMultiChildren(preChildren, nextChildren, container, refNext)238 break239 }240 break241 }242}243const NoHandle = Symbol('NoHandle')244// 算法思想:尽可能少的移动元素,即找出需要移动元素的最小数量245function patchMultiChildren(preChildren, nextChildren, container, refNext) {246 let j = 0,247 preLast = preChildren.length - 1,248 nextLast = nextChildren.length - 1249 250 // 首先处理相同的前半部分251 while (j <= preLast && j <= nextLast && preChildren[j].key === nextChildren[j].key) {252 patch(preChildren[j], nextChildren[j], container)253 j++254 }255 // 然后处理相同的后半部分256 while (preLast >= j && nextLast >= j && preChildren[preLast].key === nextChildren[nextLast].key) {257 patch(preChildren[preLast], nextChildren[nextLast], container)258 preLast--259 nextLast--260 }261 // 判断边界情况,如果 j > preLast && j <= nextLast 则说明有新增的节点262 if (j > preLast && j <= nextLast) {263 for (let i = nextLast; i >= j; i--) {264 const refEl = nextChildren[i + 1] && getRef(nextChildren[i + 1]) || refNext265 mount(nextChildren[i], container, refEl)266 }267 } else if (j <= preLast && j > nextLast) {268 // 有旧节点需要删除269 for (let i = j; j <= preLast; j++) {270 removeChild(preChildren[i], container)271 }272 } else {273 // 从 j ~ nextLast 中找到最长递增子序列,最长递增子序列就是不需要移动的元素,其余元素需要增加或移动,这样可以保证操作数量达到最小274 const nextSeq = new Array(nextLast - j + 1)275 // 填充-1表示没有在旧列表找到匹配元素276 nextSeq.fill(-1)277 // 建立新列表map,方便旧列表查找可复用索引278 const nextIndexMap = Object.create(null)279 for (let i = j; i <= nextLast; i++) {280 nextIndexMap[nextChildren[i].key] = i - j281 }282 // 遍历旧列表,查看元素是否可以复用283 let reverseFlag = false,284 lastMaxIndex = 0285 for (let i = j; i <= preLast; i++) {286 const finded = nextIndexMap[preChildren[i].key]287 if (typeof finded !== 'undefined') {288 // 如果可以找到匹配的,需要判断是否存在逆序,如果存在逆序,则需要调整元素位置关系289 if (finded < lastMaxIndex) {290 reverseFlag = true291 } else {292 lastMaxIndex = finded293 }294 // 为新列表的匹配列表增加映射295 nextSeq[finded] = i - j296 // 找到匹配元素应该进行patch297 patch(preChildren[i], nextChildren[finded + j], container)298 } else {299 // 如果未在新列表找到匹配的,则直接删除即可300 removeChild(preChildren[i], container)301 }302 }303 // 如果有逆序,利用nextSeq求出最长递增子序列,并做上不需要处理的标记304 reverseFlag && getLongestIncreacingSubSeq(nextSeq, NoHandle)305 // 处理后最长递增子序列已做上NoHandle标记306 for (let i = nextSeq.length - 1; i >= 0; i--) {307 if (nextSeq[i] === NoHandle) {308 continue309 } else if (nextSeq[i] === -1) {310 // 代表需要挂载的新元素311 const refEl = nextChildren[i + j + 1] && getRef(nextChildren[i + j + 1]) || refNext312 mount(nextChildren[i + j], container, refEl)313 } else {314 // 需要调整位置的元素315 const refEl = nextChildren[i + j + 1] && getRef(nextChildren[i + j + 1]) || refNext316 insertBefore(nextChildren[i + j], container, refEl)317 }318 }319 }320}321function getLongestIncreacingSubSeq(nextSeq, NoHandle) {322 // res记录以每一位结尾的最大长度323 const res = new Array(nextSeq.length)324 res.fill(1)325 // greedyLen[i] 存储子序列长度为i的最后一位的最小值326 const greedyLen = new Array(nextSeq.length)327 greedyLen.fill(0)328 greedyLen[0] = -1329 let len = 0, maxEndIdx330 // 求出每一位最大能接到长度为几的序列后331 for (let i = 0; i < nextSeq.length; i++) {332 if (nextSeq[i] === -1) continue333 let l = 0, r = len, mid334 while (l < r) {335 mid = l + r + 1 >> 1336 if (greedyLen[mid] < nextSeq[i]) {337 l = mid338 } else {339 r = mid - 1340 }341 }342 greedyLen[l + 1] = nextSeq[i]343 res[i] = l + 1344 if (l + 1 > len) {345 len = l + 1346 maxEndIdx = i347 }348 }349 // 开始对最大序列标记350 while (len) {351 while (res[maxEndIdx] !== len) maxEndIdx--352 nextSeq[maxEndIdx] = NoHandle353 len--354 }355}356function patchComponent(preVnode, nextVnode, container, flags) {357 // 组件更新原理就是更新组件数据,剩下流程交给组件本身358 if (flags & VNodeFlags.COMPONENT_STATEFUL) {359 const instance = nextVnode.children = preVnode.children360 instance._update()361 } else {362 const handle = nextVnode.handle = preVnode.handle363 handle.update()364 }...

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ProjectFilter.js

Source:ProjectFilter.js Github

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1import React, {useEffect, useState} from "react";2import PropTypes from 'prop-types';3import ProjectFilterLabel from "../ProjectFilterLabel/ProjectFilterLabel";4import {DEFAULT_ANIMATION_DELAY, PROJECTS_MODE} from "../../../constants/settings";5import {useAnimationList} from "../../../utils/hooks";6import "./ProjectFilter.scss";7function ProjectFilter({techList, setFilteredValues}) {8 const [all, setAll] = useState(true);9 const [flags, setFlags] = useState(Array(techList.length).fill(false));10 const delays = Array(flags.length + 1).fill(0).map((value, index) => DEFAULT_ANIMATION_DELAY + 50 * (index + 1));11 const labelsInline = useAnimationList(PROJECTS_MODE, "label_rise", delays);12 useEffect(() => {13 if (all) {14 setFilteredValues(techList);15 } else {16 setFilteredValues(techList.filter((tech, index) => flags[index]));17 }18 }, [all, flags, setFilteredValues]);19 const allClickHandler = () => {20 setAll(true);21 setFlags(Array(techList.length).fill(false));22 }23 const techClickHandler = tech => {24 let nextFlags = flags.map((flag, index) => techList[index] === tech ? !flag : flag);25 const nextAll = !nextFlags.some(f => f) || nextFlags.every(f => f);26 if (nextAll) nextFlags = Array(techList.length).fill(false);27 setAll(nextAll);28 setFlags(nextFlags);29 }30 return (31 <ul className="project_filter">32 <ProjectFilterLabel33 tech="Все технологии"34 hasSelected={all}35 clickHandler={allClickHandler}36 labelInline={labelsInline[0]}37 />38 {techList.map((tech, index) =>39 <ProjectFilterLabel40 key={tech}41 tech={tech}42 hasSelected={flags[index]}43 clickHandler={() => techClickHandler(tech)}44 labelInline={labelsInline[index + 1]}45 />46 )}47 </ul>48 );49}50ProjectFilter.propTypes = {51 techList: PropTypes.arrayOf(PropTypes.string),52 setFilteredValues: PropTypes.func53}...

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patch.ts

Source:patch.ts Github

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1import { VNodeFlags } from '../shared/flags'2import { RenderKit } from '../shared/render-kit'3import { VNode } from '../shared/types'4import { patchAngularComponent } from './angular-component'5import { patchClassComponent } from './class-component'6import { patchFunctionComponent } from './function-component'7import { patchIntrinsic } from './intrinsic'8import { mount } from './mount'9import { detach, parentNodeOf } from './render'10import { patchText } from './text'11import { unmount } from './unmount'12import { patchVoid } from './void'13export function patch(kit: RenderKit, lastVNode: VNode, nextVNode: VNode): void {14 const nextFlags = nextVNode.flags15 if (lastVNode.flags !== nextVNode.flags || lastVNode.type !== nextVNode.type || lastVNode.key !== nextVNode.key) {16 replaceWithNewNode(kit, lastVNode, nextVNode)17 } else if (nextFlags & VNodeFlags.Intrinsic) {18 patchIntrinsic(kit, lastVNode, nextVNode)19 } else if (nextFlags & VNodeFlags.ClassComponent) {20 patchClassComponent(kit, lastVNode, nextVNode)21 } else if (nextFlags & VNodeFlags.FunctionComponent) {22 patchFunctionComponent(kit, lastVNode, nextVNode)23 } else if (nextFlags & VNodeFlags.Text) {24 patchText(kit, lastVNode, nextVNode)25 } else if (nextFlags & VNodeFlags.Void) {26 patchVoid(lastVNode, nextVNode)27 } else if (nextFlags & VNodeFlags.AngularComponent) {28 patchAngularComponent(kit, lastVNode, nextVNode)29 } else {30 throw new Error(`Unsupported node type ${nextVNode.type}`)31 }32}33function replaceWithNewNode(kit: RenderKit, lastVNode: VNode, nextVNode: VNode): void {34 const lastNode = lastVNode.native35 let container: Element36 if (lastNode == null || (container = parentNodeOf(kit, lastNode)) == null) {37 return38 }39 unmount(kit, lastVNode)40 mount(kit, nextVNode, container, lastNode)41 detach(kit, lastNode)...

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Using AI Code Generation

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1const { nextFlags } = require('fast-check');2const flags = nextFlags();3console.log(flags);4{5 "dependencies": {6 }7}8{ noShrink: false, interruptAfterTimeLimit: false, interruptAfterTimeLimitMs: 1000, interruptAfterMaxTimeLimit: false, interruptAfterMaxTimeLimitMs: 10000, interruptAfterMaxTimeLimitPerProperty: false, interruptAfterMaxTimeLimitPerPropertyMs: 1000, interruptAfterNumberOfTries: false, interruptAfterNumberOfTriesLimit: 100, interruptAfterNumberOfTriesPerProperty: false, interruptAfterNumberOfTriesPerPropertyLimit: 10, interruptAfterNumberOfTriesPerPropertyPerRun: false, interruptAfterNumberOfTriesPerPropertyPerRunLimit: 10, interruptAfterNumberOfShrinks: false, interruptAfterNumberOfShrinksLimit: 100, interruptAfterNumberOfShrinksPerProperty: false, interruptAfterNumberOfShrinksPerPropertyLimit: 10, interruptAfterNumberOfShrinksPerPropertyPerRun: false, interruptAfterNumberOfShrinksPerPropertyPerRunLimit: 10, interruptAfterNumberOfRuns: false, interruptAfterNumberOfRunsLimit: 100, interruptAfterNumberOfRunsPerProperty: false, interruptAfterNumberOfRunsPerPropertyLimit: 10, interruptAfterNumberOfRunsPerPropertyPerRun: false, interruptAfterNumberOfRunsPerPropertyPerRunLimit: 10, interruptAfterNumberOfSkips: false, interruptAfterNumberOfSkipsLimit: 100, interruptAfterNumberOfSkipsPerProperty: false, interruptAfterNumberOfSkipsPerPropertyLimit: 10, interruptAfterNumberOfSkipsPerPropertyPerRun: false, interruptAfterNumberOfSkipsPerPropertyPerRunLimit: 10, interruptAfterNumberOfDiscarded: false, interruptAfterNumberOfDiscardedLimit: 100, interruptAfterNumberOfDiscardedPerProperty: false, interruptAfterNumberOfDiscardedPerPropertyLimit: 10, interruptAfterNumberOfDiscardedPerPropertyPerRun: false, interruptAfterNumberOfDiscardedPerPropertyPerRunLimit: 10, interruptAfterNumberOfDiscardedPerRun: false

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Using AI Code Generation

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1const fc = require('fast-check');2const { nextFlags } = require('fast-check/lib/arbitrary/_internals/NextArbitraryHelpers');3const { array } = require('fast-check/lib/arbitrary/array');4const { tuple } = require('fast-check/lib/arbitrary/tuple');5const arb = array(tuple(array(fc.integer()), array(fc.integer())));6const flags = nextFlags(arb, 1000);7console.log(flags);8const fc = require('fast-check');9const { nextFlags } = require('fast-check/lib/arbitrary/_internals/NextArbitraryHelpers');10const { array } = require('fast-check/lib/arbitrary/array');11const { tuple } = require('fast-check/lib/arbitrary/tuple');12const arb = array(tuple(array(fc

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Using AI Code Generation

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1const fc = require('fast-check');2const { nextFlags } = require('fast-check/lib/check/runner/flags/NextFlags.js');3const flags = nextFlags();4console.log(flags);5const fc = require('fast-check');6const { nextFlags } = require('fast-check/lib/check/runner/flags/NextFlags.js');7const flags = nextFlags();8console.log(flags);9const fc = require('fast-check');10const { nextFlags } = require('fast-check/lib/check/runner/flags/NextFlags.js');11const flags = nextFlags();12console.log(flags);13const fc = require('fast-check');14const { nextFlags } = require('fast-check/lib/check/runner/flags/NextFlags.js');15const flags = nextFlags();16console.log(flags);17const fc = require('fast-check');18const { nextFlags } = require('fast-check/lib/check/runner/flags/NextFlags.js');19const flags = nextFlags();20console.log(flags);21const fc = require('fast-check');22const { nextFlags } = require('fast-check/lib/check/runner/flags/NextFlags.js');23const flags = nextFlags();24console.log(flags);25const fc = require('fast-check');26const { nextFlags } = require('fast-check/lib/check/runner/flags/NextFlags.js');27const flags = nextFlags();28console.log(flags);

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Using AI Code Generation

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1const { nextFlags } = require('fast-check/lib/check/arbitrary/NextArbitrary');2const flags = nextFlags(0);3const flags = nextFlags(1);4const flags = nextFlags(2);5const flags = nextFlags(3);6const flags = nextFlags(4);7const flags = nextFlags(5);8const flags = nextFlags(6);9const flags = nextFlags(7);10const flags = nextFlags(8);11const { nextFlags } = require('fast-check/lib/check/arbitrary/NextArbitrary');12const flags = nextFlags(0);13const flags = nextFlags(1);

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Using AI Code Generation

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1const fc = require('fast-check');2fc.check(3 fc.property(fc.integer(), (n) => {4 if (n >= 0) {5 return true;6 }7 return false;8 }),9 {10 nextFlags: function (flags) {11 return {12 };13 },14 }15);16const fc = require('fast-check');17fc.check(18 fc.property(fc.integer(), (n) => {19 if (n >= 0) {20 return true;21 }22 return false;23 }),24 {25 nextFlags: function (flags) {26 return {27 };28 },29 }30);

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Using AI Code Generation

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1const { nextFlags } = require('fast-check-monorepo')2const { run } = require('./run')3const flags = nextFlags()4run(flags)5const { run } = require('fast-check-monorepo')6const run = (flags) => {7 console.log(flags)8}9module.exports = { run }

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Using AI Code Generation

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1const fc = require('fast-check');2const nextFlags = require('fast-check-monorepo').nextFlags;3const flags = nextFlags();4console.log(flags);5{ flags: '--expose-gc --max_old_space_size=4096', command: 'node' }6const { spawn } = require('child_process');7const child = spawn('node', ['--expose-gc', '--max_old_space_size=4096', 'test.js']);8child.stdout.on('data', (data) => {9 console.log(`stdout: ${data}`);10});11child.stderr.on('data', (data) => {12 console.error(`stderr: ${data}`);13});14child.on('close', (code) => {15 console.log(`child process exited with code ${code}`);16});17const { exec } = require('child_process');18exec(`node ${flags.flags} test.js`, (error, stdout, stderr) => {19 if (error) {20 console.error(`exec error: ${error}`);21 return;22 }23 console.log(`stdout: ${stdout}`);24 console.error(`stderr: ${stderr}`);25});

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