import { Channel } from '@storybook/channels'; import { global } from '@storybook/global'; import { logger } from '@storybook/client-logger'; import { STORY_RENDERED, UPDATE_STORY_ARGS, RESET_STORY_ARGS, UPDATE_GLOBALS, FORCE_RE_RENDER } from '@storybook/core-events'; var __create=Object.create;var __defProp=Object.defineProperty;var __getOwnPropDesc=Object.getOwnPropertyDescriptor;var __getOwnPropNames=Object.getOwnPropertyNames;var __getProtoOf=Object.getPrototypeOf,__hasOwnProp=Object.prototype.hasOwnProperty;var __commonJS=(cb,mod)=>function(){return mod||(0, cb[__getOwnPropNames(cb)[0]])((mod={exports:{}}).exports,mod),mod.exports};var __copyProps=(to,from,except,desc)=>{if(from&&typeof from=="object"||typeof from=="function")for(let key of __getOwnPropNames(from))!__hasOwnProp.call(to,key)&&key!==except&&__defProp(to,key,{get:()=>from[key],enumerable:!(desc=__getOwnPropDesc(from,key))||desc.enumerable});return to};var __toESM=(mod,isNodeMode,target)=>(target=mod!=null?__create(__getProtoOf(mod)):{},__copyProps(isNodeMode||!mod||!mod.__esModule?__defProp(target,"default",{value:mod,enumerable:!0}):target,mod));function mockChannel(){let transport={setHandler:()=>{},send:()=>{}};return new Channel({transport})}var AddonStore=class{constructor(){this.getChannel=()=>{if(!this.channel){let channel=mockChannel();return this.setChannel(channel),channel}return this.channel};this.getServerChannel=()=>{if(!this.serverChannel)throw new Error("Accessing non-existent serverChannel");return this.serverChannel};this.ready=()=>this.promise;this.hasChannel=()=>!!this.channel;this.hasServerChannel=()=>!!this.serverChannel;this.setChannel=channel=>{this.channel=channel,this.resolve();};this.setServerChannel=channel=>{this.serverChannel=channel;};this.promise=new Promise(res=>{this.resolve=()=>res(this.getChannel());});}},KEY="__STORYBOOK_ADDONS_PREVIEW";function getAddonsStore(){return global[KEY]||(global[KEY]=new AddonStore),global[KEY]}var addons=getAddonsStore();var HooksContext=class{constructor(){this.hookListsMap=void 0;this.mountedDecorators=void 0;this.prevMountedDecorators=void 0;this.currentHooks=void 0;this.nextHookIndex=void 0;this.currentPhase=void 0;this.currentEffects=void 0;this.prevEffects=void 0;this.currentDecoratorName=void 0;this.hasUpdates=void 0;this.currentContext=void 0;this.renderListener=storyId=>{storyId===this.currentContext?.id&&(this.triggerEffects(),this.currentContext=null,this.removeRenderListeners());};this.init();}init(){this.hookListsMap=new WeakMap,this.mountedDecorators=new Set,this.prevMountedDecorators=new Set,this.currentHooks=[],this.nextHookIndex=0,this.currentPhase="NONE",this.currentEffects=[],this.prevEffects=[],this.currentDecoratorName=null,this.hasUpdates=!1,this.currentContext=null;}clean(){this.prevEffects.forEach(effect=>{effect.destroy&&effect.destroy();}),this.init(),this.removeRenderListeners();}getNextHook(){let hook=this.currentHooks[this.nextHookIndex];return this.nextHookIndex+=1,hook}triggerEffects(){this.prevEffects.forEach(effect=>{!this.currentEffects.includes(effect)&&effect.destroy&&effect.destroy();}),this.currentEffects.forEach(effect=>{this.prevEffects.includes(effect)||(effect.destroy=effect.create());}),this.prevEffects=this.currentEffects,this.currentEffects=[];}addRenderListeners(){this.removeRenderListeners(),addons.getChannel().on(STORY_RENDERED,this.renderListener);}removeRenderListeners(){addons.getChannel().removeListener(STORY_RENDERED,this.renderListener);}};function hookify(fn){let hookified=(...args)=>{let{hooks}=typeof args[0]=="function"?args[1]:args[0],prevPhase=hooks.currentPhase,prevHooks=hooks.currentHooks,prevNextHookIndex=hooks.nextHookIndex,prevDecoratorName=hooks.currentDecoratorName;hooks.currentDecoratorName=fn.name,hooks.prevMountedDecorators.has(fn)?(hooks.currentPhase="UPDATE",hooks.currentHooks=hooks.hookListsMap.get(fn)||[]):(hooks.currentPhase="MOUNT",hooks.currentHooks=[],hooks.hookListsMap.set(fn,hooks.currentHooks),hooks.prevMountedDecorators.add(fn)),hooks.nextHookIndex=0;let prevContext=global.STORYBOOK_HOOKS_CONTEXT;global.STORYBOOK_HOOKS_CONTEXT=hooks;let result=fn(...args);if(global.STORYBOOK_HOOKS_CONTEXT=prevContext,hooks.currentPhase==="UPDATE"&&hooks.getNextHook()!=null)throw new Error("Rendered fewer hooks than expected. This may be caused by an accidental early return statement.");return hooks.currentPhase=prevPhase,hooks.currentHooks=prevHooks,hooks.nextHookIndex=prevNextHookIndex,hooks.currentDecoratorName=prevDecoratorName,result};return hookified.originalFn=fn,hookified}var numberOfRenders=0,RENDER_LIMIT=25,applyHooks=applyDecorators=>(storyFn,decorators)=>{let decorated=applyDecorators(hookify(storyFn),decorators.map(decorator=>hookify(decorator)));return context=>{let{hooks}=context;hooks.prevMountedDecorators??=new Set,hooks.mountedDecorators=new Set([storyFn,...decorators]),hooks.currentContext=context,hooks.hasUpdates=!1;let result=decorated(context);for(numberOfRenders=1;hooks.hasUpdates;)if(hooks.hasUpdates=!1,hooks.currentEffects=[],result=decorated(context),numberOfRenders+=1,numberOfRenders>RENDER_LIMIT)throw new Error("Too many re-renders. Storybook limits the number of renders to prevent an infinite loop.");return hooks.addRenderListeners(),result}},areDepsEqual=(deps,nextDeps)=>deps.length===nextDeps.length&&deps.every((dep,i)=>dep===nextDeps[i]),invalidHooksError=()=>new Error("Storybook preview hooks can only be called inside decorators and story functions.");function getHooksContextOrNull(){return global.STORYBOOK_HOOKS_CONTEXT||null}function getHooksContextOrThrow(){let hooks=getHooksContextOrNull();if(hooks==null)throw invalidHooksError();return hooks}function useHook(name,callback,deps){let hooks=getHooksContextOrThrow();if(hooks.currentPhase==="MOUNT"){deps!=null&&!Array.isArray(deps)&&logger.warn(`${name} received a final argument that is not an array (instead, received ${deps}). When specified, the final argument must be an array.`);let hook={name,deps};return hooks.currentHooks.push(hook),callback(hook),hook}if(hooks.currentPhase==="UPDATE"){let hook=hooks.getNextHook();if(hook==null)throw new Error("Rendered more hooks than during the previous render.");return hook.name!==name&&logger.warn(`Storybook has detected a change in the order of Hooks${hooks.currentDecoratorName?` called by ${hooks.currentDecoratorName}`:""}. This will lead to bugs and errors if not fixed.`),deps!=null&&hook.deps==null&&logger.warn(`${name} received a final argument during this render, but not during the previous render. Even though the final argument is optional, its type cannot change between renders.`),deps!=null&&hook.deps!=null&&deps.length!==hook.deps.length&&logger.warn(`The final argument passed to ${name} changed size between renders. The order and size of this array must remain constant. Previous: ${hook.deps} Incoming: ${deps}`),(deps==null||hook.deps==null||!areDepsEqual(deps,hook.deps))&&(callback(hook),hook.deps=deps),hook}throw invalidHooksError()}function useMemoLike(name,nextCreate,deps){let{memoizedState}=useHook(name,hook=>{hook.memoizedState=nextCreate();},deps);return memoizedState}function useMemo(nextCreate,deps){return useMemoLike("useMemo",nextCreate,deps)}function useCallback(callback,deps){return useMemoLike("useCallback",()=>callback,deps)}function useRefLike(name,initialValue){return useMemoLike(name,()=>({current:initialValue}),[])}function useRef(initialValue){return useRefLike("useRef",initialValue)}function triggerUpdate(){let hooks=getHooksContextOrNull();if(hooks!=null&&hooks.currentPhase!=="NONE")hooks.hasUpdates=!0;else try{addons.getChannel().emit(FORCE_RE_RENDER);}catch{logger.warn("State updates of Storybook preview hooks work only in browser");}}function useStateLike(name,initialState){let stateRef=useRefLike(name,typeof initialState=="function"?initialState():initialState),setState=update=>{stateRef.current=typeof update=="function"?update(stateRef.current):update,triggerUpdate();};return [stateRef.current,setState]}function useState(initialState){return useStateLike("useState",initialState)}function useReducer(reducer,initialArg,init){let initialState=init!=null?()=>init(initialArg):initialArg,[state,setState]=useStateLike("useReducer",initialState);return [state,action=>setState(prevState=>reducer(prevState,action))]}function useEffect(create,deps){let hooks=getHooksContextOrThrow(),effect=useMemoLike("useEffect",()=>({create}),deps);hooks.currentEffects.includes(effect)||hooks.currentEffects.push(effect);}function useChannel(eventMap,deps=[]){let channel=addons.getChannel();return useEffect(()=>(Object.entries(eventMap).forEach(([type,listener])=>channel.on(type,listener)),()=>{Object.entries(eventMap).forEach(([type,listener])=>channel.removeListener(type,listener));}),[...Object.keys(eventMap),...deps]),useCallback(channel.emit.bind(channel),[channel])}function useStoryContext(){let{currentContext}=getHooksContextOrThrow();if(currentContext==null)throw invalidHooksError();return currentContext}function useParameter(parameterKey,defaultValue){let{parameters}=useStoryContext();if(parameterKey)return parameters[parameterKey]??defaultValue}function useArgs(){let channel=addons.getChannel(),{id:storyId,args}=useStoryContext(),updateArgs=useCallback(updatedArgs=>channel.emit(UPDATE_STORY_ARGS,{storyId,updatedArgs}),[channel,storyId]),resetArgs=useCallback(argNames=>channel.emit(RESET_STORY_ARGS,{storyId,argNames}),[channel,storyId]);return [args,updateArgs,resetArgs]}function useGlobals(){let channel=addons.getChannel(),{globals}=useStoryContext(),updateGlobals=useCallback(newGlobals=>channel.emit(UPDATE_GLOBALS,{globals:newGlobals}),[channel]);return [globals,updateGlobals]} export { AddonStore, HooksContext, __commonJS, __toESM, addons, applyHooks, mockChannel, useArgs, useCallback, useChannel, useEffect, useGlobals, useMemo, useParameter, useReducer, useRef, useState, useStoryContext };