How to use nextCreate method in storybook-root

Best JavaScript code snippet using storybook-root

hooks.test.js

Source:hooks.test.js Github

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1import {2 FORCE_RE_RENDER,3 STORY_RENDERED,4 UPDATE_STORY_ARGS,5 RESET_STORY_ARGS,6 UPDATE_GLOBALS,7} from '@storybook/core-events';8import { addons } from '@storybook/addons';9import { defaultDecorateStory } from './decorators';10import {11 applyHooks,12 useEffect,13 useMemo,14 useCallback,15 useRef,16 useState,17 useReducer,18 useChannel,19 useParameter,20 useStoryContext,21 HooksContext,22 useArgs,23 useGlobals,24} from './hooks';25jest.mock('@storybook/client-logger', () => ({26 logger: { warn: jest.fn(), log: jest.fn() },27}));28const SOME_EVENT = 'someEvent';29let mockChannel;30let hooks;31let onSomeEvent;32let removeSomeEventListener;33beforeEach(() => {34 onSomeEvent = jest.fn();35 removeSomeEventListener = jest.fn();36 mockChannel = {37 emit: jest.fn(),38 on(event, callback) {39 switch (event) {40 case STORY_RENDERED:41 callback();42 break;43 case SOME_EVENT:44 onSomeEvent(event, callback);45 break;46 default:47 }48 },49 removeListener(event, callback) {50 if (event === SOME_EVENT) {51 removeSomeEventListener(event, callback);52 }53 },54 };55 hooks = new HooksContext();56 addons.setChannel(mockChannel);57});58const decorateStory = applyHooks(defaultDecorateStory);59const run = (storyFn, decorators = [], context) =>60 decorateStory(storyFn, decorators)({ ...context, hooks });61describe('Preview hooks', () => {62 describe('useEffect', () => {63 it('triggers the effect from story function', () => {64 const effect = jest.fn();65 run(() => {66 useEffect(effect);67 });68 expect(effect).toHaveBeenCalledTimes(1);69 });70 it('triggers the effect from decorator', () => {71 const effect = jest.fn();72 run(() => {}, [73 (storyFn) => {74 useEffect(effect);75 return storyFn();76 },77 ]);78 expect(effect).toHaveBeenCalledTimes(1);79 });80 it('triggers the effect from decorator if story call comes before useEffect', () => {81 const effect = jest.fn();82 run(() => {}, [83 (storyFn) => {84 const story = storyFn();85 useEffect(effect);86 return story;87 },88 ]);89 expect(effect).toHaveBeenCalledTimes(1);90 });91 it('retriggers the effect if no deps array is provided', () => {92 const effect = jest.fn();93 const storyFn = () => {94 useEffect(effect);95 };96 run(storyFn);97 run(storyFn);98 expect(effect).toHaveBeenCalledTimes(2);99 });100 it("doesn't retrigger the effect if empty deps array is provided", () => {101 const effect = jest.fn();102 const storyFn = () => {103 useEffect(effect, []);104 };105 run(storyFn);106 run(storyFn);107 expect(effect).toHaveBeenCalledTimes(1);108 });109 it("doesn't retrigger the effect from decorator if story has changed", () => {110 const effect = jest.fn();111 const decorator = (storyFn) => {112 useEffect(effect, []);113 return storyFn();114 };115 run(() => {}, [decorator]);116 run(() => {}, [decorator]);117 expect(effect).toHaveBeenCalledTimes(1);118 });119 it("doesn't retrigger the effect from decorator if story has changed and story call comes before useEffect", () => {120 const effect = jest.fn();121 const decorator = (storyFn) => {122 const story = storyFn();123 useEffect(effect, []);124 return story;125 };126 run(() => {}, [decorator]);127 run(() => {}, [decorator]);128 expect(effect).toHaveBeenCalledTimes(1);129 });130 it("doesn't retrigger the effect from if decorator calls story twice", () => {131 const effect = jest.fn();132 const story = () => {133 useEffect(effect, []);134 };135 const decorator = (storyFn) => {136 storyFn();137 return storyFn();138 };139 run(story, [decorator]);140 expect(effect).toHaveBeenCalledTimes(1);141 });142 it('retriggers the effect if some of the deps are changed', () => {143 const effect = jest.fn();144 let counter = 0;145 const storyFn = () => {146 useEffect(effect, [counter]);147 counter += 1;148 };149 run(storyFn);150 run(storyFn);151 expect(effect).toHaveBeenCalledTimes(2);152 });153 it("doesn't retrigger the effect if none of the deps are changed", () => {154 const effect = jest.fn();155 const storyFn = () => {156 useEffect(effect, [0]);157 };158 run(storyFn);159 run(storyFn);160 expect(effect).toHaveBeenCalledTimes(1);161 });162 it('performs cleanup when retriggering', () => {163 const destroy = jest.fn();164 const storyFn = () => {165 useEffect(() => destroy);166 };167 run(storyFn);168 run(storyFn);169 expect(destroy).toHaveBeenCalledTimes(1);170 });171 it("doesn't perform cleanup when keeping the current effect", () => {172 const destroy = jest.fn();173 const storyFn = () => {174 useEffect(() => destroy, []);175 };176 run(storyFn);177 run(storyFn);178 expect(destroy).not.toHaveBeenCalled();179 });180 it('performs cleanup when removing the decorator', () => {181 const destroy = jest.fn();182 run(() => {}, [183 (storyFn) => {184 useEffect(() => destroy);185 return storyFn();186 },187 ]);188 run(() => {});189 expect(destroy).toHaveBeenCalledTimes(1);190 });191 });192 describe('useChannel', () => {193 it('calls .on when rendering the decorator', () => {194 const handler = () => {};195 run(() => {}, [196 (storyFn) => {197 useChannel({198 [SOME_EVENT]: handler,199 });200 return storyFn();201 },202 ]);203 expect(onSomeEvent).toHaveBeenCalledTimes(1);204 expect(removeSomeEventListener).toHaveBeenCalledTimes(0);205 });206 it('calls .removeListener when removing the decorator', () => {207 const handler = () => {};208 run(() => {}, [209 (storyFn) => {210 useChannel({211 [SOME_EVENT]: handler,212 });213 return storyFn();214 },215 ]);216 expect(onSomeEvent).toHaveBeenCalledTimes(1);217 expect(removeSomeEventListener).toHaveBeenCalledTimes(0);218 run(() => {});219 expect(removeSomeEventListener).toHaveBeenCalledTimes(1);220 });221 });222 describe('useStoryContext', () => {223 it('returns current context', () => {224 const context = {};225 run(226 () => {227 expect(useStoryContext()).toEqual({ ...context, hooks });228 },229 [],230 context231 );232 });233 });234 describe('useParameter', () => {235 it('will pull value from storyStore', () => {236 run(237 () => {},238 [239 (storyFn) => {240 expect(useParameter('foo', 4)).toEqual(42);241 return storyFn();242 },243 ],244 { parameters: { foo: 42 } }245 );246 });247 it('will return default value', () => {248 run(249 () => {},250 [251 (storyFn) => {252 expect(useParameter('bar', 4)).toEqual(4);253 return storyFn();254 },255 ],256 { parameters: {} }257 );258 });259 it('will return undefined when no value is found', () => {260 run(261 () => {},262 [263 (storyFn) => {264 expect(useParameter('bar')).toBe(undefined);265 return storyFn();266 },267 ],268 { parameters: {} }269 );270 });271 });272 describe('useMemo', () => {273 it('performs the calculation', () => {274 let result;275 const nextCreate = jest.fn(() => 'foo');276 const storyFn = () => {277 result = useMemo(nextCreate, []);278 };279 run(storyFn);280 expect(nextCreate).toHaveBeenCalledTimes(1);281 expect(result).toBe('foo');282 });283 it('performs the calculation once if deps are unchanged', () => {284 let result;285 const nextCreate = jest.fn(() => 'foo');286 const storyFn = () => {287 result = useMemo(nextCreate, []);288 };289 run(storyFn);290 run(storyFn);291 expect(nextCreate).toHaveBeenCalledTimes(1);292 expect(result).toBe('foo');293 });294 it('performs the calculation again if deps are changed', () => {295 let result;296 let counter = 0;297 const nextCreate = jest.fn(() => counter);298 const storyFn = () => {299 counter += 1;300 result = useMemo(nextCreate, [counter]);301 };302 run(storyFn);303 run(storyFn);304 expect(nextCreate).toHaveBeenCalledTimes(2);305 expect(result).toBe(counter);306 });307 });308 describe('useCallback', () => {309 it('returns the callback', () => {310 let result;311 const callback = () => {};312 const storyFn = () => {313 result = useCallback(callback, []);314 };315 run(storyFn);316 expect(result).toBe(callback);317 });318 it('returns the previous callback reference if deps are unchanged', () => {319 const callbacks = [];320 const storyFn = () => {321 const callback = useCallback(() => {}, []);322 callbacks.push(callback);323 };324 run(storyFn);325 run(storyFn);326 expect(callbacks[0]).toBe(callbacks[1]);327 });328 it('creates new callback reference if deps are changed', () => {329 const callbacks = [];330 let counter = 0;331 const storyFn = () => {332 counter += 1;333 const callback = useCallback(() => {}, [counter]);334 callbacks.push(callback);335 };336 run(storyFn);337 run(storyFn);338 expect(callbacks[0]).not.toBe(callbacks[1]);339 });340 });341 describe('useRef', () => {342 it('attaches initial value', () => {343 let ref;344 const storyFn = () => {345 ref = useRef('foo');346 };347 run(storyFn);348 expect(ref.current).toBe('foo');349 });350 it('stores mutations', () => {351 let refValueFromSecondRender;352 let counter = 0;353 const storyFn = () => {354 counter += 1;355 const ref = useRef('foo');356 if (counter === 1) {357 ref.current = 'bar';358 } else {359 refValueFromSecondRender = ref.current;360 }361 };362 run(storyFn);363 run(storyFn);364 expect(refValueFromSecondRender).toBe('bar');365 });366 });367 describe('useState', () => {368 it('sets initial state', () => {369 let state;370 const storyFn = () => {371 [state] = useState('foo');372 };373 run(storyFn);374 expect(state).toBe('foo');375 });376 it('calculates initial state', () => {377 let state;378 const storyFn = () => {379 [state] = useState(() => 'foo');380 };381 run(storyFn);382 expect(state).toBe('foo');383 });384 it('performs synchronous state updates', () => {385 let state;386 let setState;387 const storyFn = jest.fn(() => {388 [state, setState] = useState('foo');389 if (state === 'foo') {390 setState('bar');391 }392 });393 run(storyFn);394 expect(storyFn).toHaveBeenCalledTimes(2);395 expect(state).toBe('bar');396 });397 it('triggers only the last effect when updating state synchronously', () => {398 const effects = [jest.fn(), jest.fn()];399 const storyFn = jest.fn(() => {400 const [effectIndex, setEffectIndex] = useState(0);401 useEffect(effects[effectIndex], [effectIndex]);402 if (effectIndex === 0) {403 setEffectIndex(1);404 }405 });406 run(storyFn);407 expect(effects[0]).not.toHaveBeenCalled();408 expect(effects[1]).toHaveBeenCalledTimes(1);409 });410 it('performs synchronous state updates with updater function', () => {411 let state;412 let setState;413 const storyFn = jest.fn(() => {414 [state, setState] = useState(0);415 if (state < 3) {416 setState((prevState) => prevState + 1);417 }418 });419 run(storyFn);420 expect(storyFn).toHaveBeenCalledTimes(4);421 expect(state).toBe(3);422 });423 it('performs asynchronous state updates', () => {424 let state;425 let setState;426 const storyFn = jest.fn(() => {427 [state, setState] = useState('foo');428 });429 run(storyFn);430 setState('bar');431 expect(mockChannel.emit).toHaveBeenCalledWith(FORCE_RE_RENDER);432 run(storyFn);433 expect(state).toBe('bar');434 });435 });436 describe('useReducer', () => {437 it('sets initial state', () => {438 let state;439 const storyFn = () => {440 [state] = useReducer(() => 'bar', 'foo');441 };442 run(storyFn);443 expect(state).toBe('foo');444 });445 it('calculates initial state', () => {446 let state;447 const storyFn = () => {448 [state] = useReducer(449 () => 'bar',450 'foo',451 (arg) => arg452 );453 };454 run(storyFn);455 expect(state).toBe('foo');456 });457 it('performs synchronous state updates', () => {458 let state;459 let dispatch;460 const storyFn = jest.fn(() => {461 [state, dispatch] = useReducer((prevState, action) => {462 switch (action) {463 case 'INCREMENT':464 return prevState + 1;465 default:466 return prevState;467 }468 }, 0);469 if (state < 3) {470 dispatch('INCREMENT');471 }472 });473 run(storyFn);474 expect(storyFn).toHaveBeenCalledTimes(4);475 expect(state).toBe(3);476 });477 it('performs asynchronous state updates', () => {478 let state;479 let dispatch;480 const storyFn = jest.fn(() => {481 [state, dispatch] = useReducer((prevState, action) => {482 switch (action) {483 case 'INCREMENT':484 return prevState + 1;485 default:486 return prevState;487 }488 }, 0);489 });490 run(storyFn);491 dispatch('INCREMENT');492 expect(mockChannel.emit).toHaveBeenCalledWith(FORCE_RE_RENDER);493 run(storyFn);494 expect(state).toBe(1);495 });496 });497 describe('useArgs', () => {498 it('will pull args from context', () => {499 run(500 () => {},501 [502 (storyFn) => {503 expect(useArgs()[0]).toEqual({ a: 'b' });504 return storyFn();505 },506 ],507 { args: { a: 'b' } }508 );509 });510 it('will emit UPDATE_STORY_ARGS when called', () => {511 run(512 () => {},513 [514 (storyFn) => {515 useArgs()[1]({ a: 'b' });516 expect(mockChannel.emit).toHaveBeenCalledWith(UPDATE_STORY_ARGS, {517 storyId: '1',518 updatedArgs: { a: 'b' },519 });520 return storyFn();521 },522 ],523 { id: '1', args: {} }524 );525 });526 it('will emit RESET_STORY_ARGS when called', () => {527 run(528 () => {},529 [530 (storyFn) => {531 useArgs()[2](['a']);532 expect(mockChannel.emit).toHaveBeenCalledWith(RESET_STORY_ARGS, {533 storyId: '1',534 argNames: ['a'],535 });536 useArgs()[2]();537 expect(mockChannel.emit).toHaveBeenCalledWith(RESET_STORY_ARGS, {538 storyId: '1',539 });540 return storyFn();541 },542 ],543 { id: '1', args: {} }544 );545 });546 });547 describe('useGlobals', () => {548 it('will pull globals from context', () => {549 run(550 () => {},551 [552 (storyFn) => {553 expect(useGlobals()[0]).toEqual({ a: 'b' });554 return storyFn();555 },556 ],557 { globals: { a: 'b' } }558 );559 });560 it('will emit UPDATE_GLOBALS when called', () => {561 run(562 () => {},563 [564 (storyFn) => {565 useGlobals()[1]({ a: 'b' });566 expect(mockChannel.emit).toHaveBeenCalledWith(UPDATE_GLOBALS, { globals: { a: 'b' } });567 return storyFn();568 },569 ],570 { globals: {} }571 );572 });573 });...

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main.js

Source:main.js Github

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1const HEIGHT = 600, WIDTH = 400;2const OBSTACLE_WIDTH = 100;3let STOP = false;4const GRAVITY = 900.0;5const COINS = document.createElement('img');COINS.src='src/gfx/coins.png';6const EGGS = document.createElement('img');EGGS.src='src/gfx/eggs.png';7const MOAI = document.createElement('img');MOAI.src='src/gfx/moai.png';8const DRAGON = document.createElement('img');DRAGON.src='src/gfx/dragon.png';9class Observer {10 constructor(){11 this.callbacks = {};12 }13 observe(key, fn) {14 if(!(key in this.callbacks))15 this.callbacks[key] = [];16 this.callbacks[key].push(fn);17 }18 notify(key, value) {19 if(key in this.callbacks)20 for(let fn of this.callbacks[key])21 fn(key, value);22 }23}24const SCALE = 4;25class Dragon {26 constructor() {27 this.x = 0;28 this.y = 300;29 this.speed = 100;30 this.vy = 200.0;31 this.hasPhysic = false;32 this.kind = Math.floor(5*Math.random());33 }34 flap() {35 this.vy = 400.0;36 }37 update(elapsed) {38 this.x += 0.001 * elapsed * this.speed;39 if(this.hasPhysic) {40 this.y -= 0.001 * elapsed * this.vy;41 this.vy -= 0.001 * elapsed * GRAVITY;42 }43 }44 draw(ctx, offset, timestamp) {45 let frame = Math.floor(4*timestamp/1000) % 2;46 ctx.drawImage(DRAGON, 350*this.kind, frame*240, 350, 240, this.x - offset - 175/SCALE, this.y - 120/SCALE, 350/SCALE, 240/SCALE);47 }48}49class Obstacle {50 constructor(x, h, orientation) {51 this.x = x;52 this.h = h;53 this.orientation = orientation;54 }55 draw(ctx, offset) {56 if(-OBSTACLE_WIDTH < this.x - offset && this.x - offset < WIDTH+OBSTACLE_WIDTH) {57 if(this.orientation == 'top') {58 ctx.fillStyle = 'black';59 ctx.fillRect(this.x - OBSTACLE_WIDTH/2 - offset, 0, OBSTACLE_WIDTH, this.h);60 } else if(this.orientation == 'down') {61 ctx.fillStyle = 'black';62 ctx.fillRect(this.x - OBSTACLE_WIDTH/2 - offset, HEIGHT - this.h, OBSTACLE_WIDTH, this.h);63 }64 }65 }66 hasCollision(x, y) {67 if(this.x - OBSTACLE_WIDTH / 2 <= x && x <= this.x + OBSTACLE_WIDTH / 2 ) {68 if(this.orientation == 'top')69 return y <= this.h;70 return y >= HEIGHT - this.h;71 }72 return false;73 }74 doCollision(world) {75 world.dragon.dead = true;76 world.o.notify('dead', true);77 }78}79class Coin {80 constructor(x, y) {81 this.x = x;82 this.y = y;83 this.collected = false;84 }85 draw(ctx, offset, timestamp) {86 if(!this.collected) {87 let frame = Math.floor(6.0 * timestamp / 1000.0) % 6;88 ctx.drawImage(COINS, 0, frame * 41, 40, 41, this.x - offset - 20, this.y - 21, 40, 41);89 }90 }91 hasCollision(x, y){92 return Math.pow(this.x-x, 2.0)+Math.pow(this.y-y, 2.0)<Math.pow(30, 2.0);93 }94 doCollision(world) {95 if(!this.collected) {96 this.collected = true;97 world.score += 5;98 world.o.notify('score', world.score);99 }100 }101}102class Egg {103 constructor(x, y) {104 this.x = x;105 this.y = y;106 this.collected = false;107 this.type = Math.floor(9 * Math.random());108 }109 draw(ctx, offset, timestamp) {110 if(!this.collected) {111 let frame = Math.floor(6.0 * timestamp / 1000.0) % 6;112 ctx.drawImage(EGGS, 96*this.type, 0, 96, 96, this.x - offset - 48, this.y - 48, 96, 96);113 }114 }115 hasCollision(x, y){116 return Math.pow(this.x-x, 2.0)+Math.pow(this.y-y, 2.0)<Math.pow(40, 2.0);117 }118 doCollision(world) {119 if(!this.collected) {120 this.collected = true;121 world.eggs += 1122 world.score += 50;123 world.o.notify('eggs', world.eggs);124 world.o.notify('score', world.score);125 }126 }127}128class Moai {129 constructor(x) {130 this.x = x;131 }132 draw(ctx, offset, timestamp) {133 ctx.drawImage(MOAI, 0, 0, 487, 600, this.x - offset - 244, 40, 487, 600);134 }135 hasCollision() {136 return false;137 }138 doCollision(){}139}140class World {141 constructor() {142 this.items = [];143 this.score = 0; 144 this.eggs = 3; // number of lives145 this.level = 1;146 this.nextCreate = -90;147 this.prices = [];148 this.createdObstacles = 0;149 let canvas = document.querySelector('canvas');150 this.ctx = canvas.getContext('2d');151 canvas.addEventListener('click', (event) => this.dragon.flap());152 document.addEventListener('keypress', (event) => this.dragon.flap());153 this.last_timestamp = 0;154 this.dragon = new Dragon();155 this.o = new Observer();156 this.o.observe('score', (key, value) => {157 document.querySelector('#score').innerText = (''+value).padStart(4, '0');158 });159 this.o.observe('eggs', (key, value) => {160 document.querySelector('#eggs').innerText = value;161 })162 this.o.observe('level', (key, value) => {163 document.querySelector('#level').innerText = 'Level ' + value;164 });165 this.o.notify('score', this.score);166 this.o.notify('eggs', this.eggs);167 this.o.notify('level', this.level);168 this.o.observe('dead', (key, value) => {169 if(this.eggs > 0) {170 this.eggs -= 1;171 this.o.notify('eggs', this.eggs);172 alert("You have died, but you can respawn from colorfull egg :)")173 this.reset();174 } else {175 STOP = true;176 alert("You have completely died before finding rabbit :'(")177 }178 })179 }180 createObstacle(height, hasItem, hasBonus) {181 let x = this.nextCreate + WIDTH + World.SPACING / 2;182 if(this.createdObstacles < 2*this.level) {183 this.createdObstacles += 1;184 let h = Math.floor(Math.random() * (HEIGHT - 100 - height));185 console.log('Create new at:', x, h);186 this.items.push(new Obstacle(x, h, 'top'));187 this.items.push(new Obstacle(x, HEIGHT - height - h, 'down'));188 if(hasBonus)189 this.items.push(new Egg(x, height + h - 30))190 if(hasItem)191 this.items.push(new Coin(x + World.SPACING / 2, Math.floor(Math.random()*(HEIGHT - 80)) + 40));192 this.prices.push(x + OBSTACLE_WIDTH / 2);193 this.nextCreate += World.SPACING;194 } else {195 this.items.push(new Moai(x + World.SPACING));196 this.nextCreate += 100000;197 }198 }199 reset(partial) {200 this.items = [];201 this.nextCreate = 0;202 this.dragon.x = 0;203 if(!partial) {204 this.dragon.died = false;205 this.dragon.y = 300;206 this.dragon.vy = 200.0;207 this.dragon.hasPhysic = false;208 }209 this.prices = [];210 this.createdObstacles = 0;211 }212 nextLevel() {213 this.level += 1;214 this.reset(true);215 this.o.notify('level', this.level);216 }217 update(timestamp) {218 let elapsed = timestamp - this.last_timestamp, offsetX = 0;219 if(elapsed > 15) {220 this.last_timestamp = timestamp;221 this.dragon.update(elapsed);222 // Dragon fly bellow sea level223 if(this.dragon.y > HEIGHT) {224 this.dragon.dead = true;225 this.o.notify('dead', true);226 return true;227 }228 this.ctx.clearRect(0, 0, WIDTH, HEIGHT);229 offsetX = this.dragon.x - 90;230 if(this.prices[0] && this.dragon.x >= this.prices[0]) {231 this.prices.shift();232 this.score += 10;233 this.o.notify('score', this.score);234 }235 if(offsetX > 100)236 this.dragon.hasPhysic = true;237 // Draw all obstacles238 for(let item of this.items) {239 item.draw(this.ctx, offsetX, timestamp);240 if(item.hasCollision(this.dragon.x, this.dragon.y)) {241 item.doCollision(this);242 }243 }244 this.dragon.draw(this.ctx, offsetX, timestamp);245 // Create new obstacles246 let timeToSpawn = this.items[0] && this.items[this.items.length-1].x - offsetX < WIDTH + World.SPACING;247 if(this.nextCreate < offsetX) {248 if(offsetX < 300)249 this.createObstacle(150, Math.random() < 0.5, Math.random() < 0.5);250 else251 this.createObstacle(150, Math.random() < 0.25, Math.random() < 0.1);252 }253 // Remove old obstacles254 while(this.items[0] && this.items[0].x - offsetX + World.SPACING < 0) {255 console.log('Removing:', this.items[0]);256 let item = this.items.shift();257 if(item instanceof Moai) {258 this.nextLevel();259 }260 }261 262 }263 return true;264 }265}266World.SPACING = 400;267function oninit() {268 console.log('oninit');269 let w = new World();270 // w.items.push(new Obstacle(500, 200, 'top'));271 // w.items.push(new Obstacle(500, 200, 'down'));272 // w.items.push(new Coin(200, 300));273 let callback = (timestamp) => {274 if(!STOP && w.update(timestamp))275 window.requestAnimationFrame(callback);276 }277 window.requestAnimationFrame(callback);...

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useCallback&useMemo.js

Source:useCallback&useMemo.js Github

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...13 // 和其他hook相同，首先找到正在执行的hook。14 const hook = mountWorkInProgressHook();15 const nextDeps = deps === undefined ? null : deps;16 // 把我们的依赖项保存在hook中并返回的callback，并执行。17 const nextValue = nextCreate();18 hook.memoizedState = [nextValue, nextDeps];19 return nextValue;20}21function updateCallback(callback, deps) {22 const hook = updateWorkInProgressHook();23 const nextDeps = deps === undefined ? null : deps;24 const prevState = hook.memoizedState;25 if (prevState !== null) {26 if (nextDeps !== null) {27 const prevDeps = prevState[1];28 // 对于两个依赖项进行比较，这里的实质上是一个浅比较。Object.is()29 if (areHookInputsEqual(nextDeps, prevDeps)) {30 return prevState[0];31 }32 }33 }34 // 和updateMemo()的唯一区别就是是否会对传入的函数进行调用。35 hook.memoizedState = [callback, nextDeps];36 return callback;37}38function updateMemo(nextCreate, deps) {39 const hook = updateWorkInProgressHook();40 const nextDeps = deps === undefined ? null : deps;41 const prevState = hook.memoizedState;42 if (prevState !== null) {43 if (nextDeps !== null) {44 const prevDeps = prevState[1];45 if (areHookInputsEqual(nextDeps, prevDeps)) {46 return prevState[0];47 }48 }49 }50 const nextValue = nextCreate();51 hook.memoizedState = [nextValue, nextDeps];52 return nextValue;...

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Using AI Code Generation

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1import React from 'react';2import { storiesOf } from '@storybook/react';3import { action } from '@storybook/addon-actions';4import { linkTo } from '@storybook/addon-links';5import Button from './Button';6import Welcome from './Welcome';7storiesOf('Welcome', module).add('to Storybook', () => <Welcome showApp={linkTo('Button')} />);8storiesOf('Button', module)9 .add('with text', () => (10 <Button onClick={action('clicked')}>Hello Button</Button>11 .add('with some emoji', () => (12 <Button onClick={action('clicked')}>😀 😎 👍 💯</Button>13 ));14import { configure } from '@storybook/react';15const req = require.context('../src', true, /.stories.js$/);16function loadStories() {17 req.keys().forEach(filename => req(filename));18}19configure(loadStories, module);20import '@storybook/addon-actions/register';21import '@storybook/addon-links/register';22const path = require('path');23module.exports = async ({ config, mode }) => {24 config.module.rules.push({25 loaders: [require.resolve('@storybook/source-loader')],26 });27 config.module.rules.push({28 include: path.resolve(__dirname, '../'),29 });30 return config;31};32ERROR in ./src/stories/index.stories.js Module build failed: Error: ENOENT: no such file or directory, open '/Users/rahul/Projects/React/react-storybook-sample/src/stories/index.stories.js' at Error (native) @ multi ./src/stories/index.stories.js

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Using AI Code Generation

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1import { nextCreate } from 'storybook-root-decorator';2import { storiesOf } from '@storybook/react';3import { withInfo } from '@storybook/addon-info';4storiesOf('Button', module)5 .addDecorator(withInfo)6 .add('with text', () => nextCreate('Button', { label: 'Hello Button' }));7![storybook](./storybook.png)8import { storiesOf } from '@storybook/react';9import { withInfo } from '@storybook/addon-info';10storiesOf('Button', module)11 .addDecorator(withInfo)12 .add('with text', () => <Button label="Hello Button" />);13![storybook](./storybook.png)14MIT © [Tae Hong Park](

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Using AI Code Generation

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1import { nextCreate } from 'storybook-root';2describe('test', () => {3 it('test', () => {4 const { getByText } = nextCreate(<TestComponent />);5 expect(getByText('test')).toBeTruthy();6 });7});8import { nextCreate } from 'storybook-root';9export default function TestComponent() {10 return <div>test</div>;11}12import { nextCreate } from 'storybook-root';13export default {14};15export const Test = () => <TestComponent />;

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Using AI Code Generation

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1import { nextCreate } from '@storybook/addon-storyshots-puppeteer';2const storybookRootProvider = {3 async nextCreate(options) {4 const { page } = options;5 await page.waitForSelector('#root');6 },7};8export default storybookRootProvider;9import { configure } from '@storybook/react';10import storybookRootProvider from '../test.js';11configure(() => {12 require('./stories');13}, module);14export const parameters = {15};16import { addDecorator } from '@storybook/react';17import { withNextRouter } from 'storybook-addon-next-router';18addDecorator(withNextRouter());19module.exports = {20 stories: ['../src/**/*.stories.@(js|jsx|ts|tsx)'],21};22const path = require('path');23const webpack = require('webpack');24module.exports = async ({ config }) => {25 config.plugins.push(new webpack.EnvironmentPlugin(process.env));26 config.resolve.alias['~'] = path.resolve(__dirname, '../');27 return config;28};29const withBundleAnalyzer = require('@next/bundle-analyzer')({30});31const withPWA = require('next-pwa');32const prod = process.env.NODE_ENV === 'production';33module.exports = withBundleAnalyzer(34 withPWA({35 pwa: {36 },37 webpack(config) {38 config.module.rules.push({39 });40 return config;41 },42 })43);44{45 "compilerOptions": {46 "paths": {47 }48 },49 "include": ["../src/**/*.stories.@(js|jsx|ts|tsx)"]50}

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Using AI Code Generation

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1import { nextCreate } from 'storybook-root';2const story = nextCreate({3 props: {4 }5});6export default story;7import 'storybook-root/register';8import 'storybook-root/preview';9import 'storybook-roo

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