8 lines
7.8 KiB
Plaintext
8 lines
7.8 KiB
Plaintext
{
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"version": 3,
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"sources": ["../src/createContext.tsx"],
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"sourcesContent": ["import * as React from 'react';\n\nfunction createContext<ContextValueType extends object | null>(\n rootComponentName: string,\n defaultContext?: ContextValueType\n) {\n const Context = React.createContext<ContextValueType | undefined>(defaultContext);\n\n const Provider: React.FC<ContextValueType & { children: React.ReactNode }> = (props) => {\n const { children, ...context } = props;\n // Only re-memoize when prop values change\n // eslint-disable-next-line react-hooks/exhaustive-deps\n const value = React.useMemo(() => context, Object.values(context)) as ContextValueType;\n return <Context.Provider value={value}>{children}</Context.Provider>;\n };\n\n Provider.displayName = rootComponentName + 'Provider';\n\n function useContext(consumerName: string) {\n const context = React.useContext(Context);\n if (context) return context;\n if (defaultContext !== undefined) return defaultContext;\n // if a defaultContext wasn't specified, it's a required context.\n throw new Error(`\\`${consumerName}\\` must be used within \\`${rootComponentName}\\``);\n }\n\n return [Provider, useContext] as const;\n}\n\n/* -------------------------------------------------------------------------------------------------\n * createContextScope\n * -----------------------------------------------------------------------------------------------*/\n\ntype Scope<C = any> = { [scopeName: string]: React.Context<C>[] } | undefined;\ntype ScopeHook = (scope: Scope) => { [__scopeProp: string]: Scope };\ninterface CreateScope {\n scopeName: string;\n (): ScopeHook;\n}\n\nfunction createContextScope(scopeName: string, createContextScopeDeps: CreateScope[] = []) {\n let defaultContexts: any[] = [];\n\n /* -----------------------------------------------------------------------------------------------\n * createContext\n * ---------------------------------------------------------------------------------------------*/\n\n function createContext<ContextValueType extends object | null>(\n rootComponentName: string,\n defaultContext?: ContextValueType\n ) {\n const BaseContext = React.createContext<ContextValueType | undefined>(defaultContext);\n const index = defaultContexts.length;\n defaultContexts = [...defaultContexts, defaultContext];\n\n const Provider: React.FC<\n ContextValueType & { scope: Scope<ContextValueType>; children: React.ReactNode }\n > = (props) => {\n const { scope, children, ...context } = props;\n const Context = scope?.[scopeName]?.[index] || BaseContext;\n // Only re-memoize when prop values change\n // eslint-disable-next-line react-hooks/exhaustive-deps\n const value = React.useMemo(() => context, Object.values(context)) as ContextValueType;\n return <Context.Provider value={value}>{children}</Context.Provider>;\n };\n\n Provider.displayName = rootComponentName + 'Provider';\n\n function useContext(consumerName: string, scope: Scope<ContextValueType | undefined>) {\n const Context = scope?.[scopeName]?.[index] || BaseContext;\n const context = React.useContext(Context);\n if (context) return context;\n if (defaultContext !== undefined) return defaultContext;\n // if a defaultContext wasn't specified, it's a required context.\n throw new Error(`\\`${consumerName}\\` must be used within \\`${rootComponentName}\\``);\n }\n\n return [Provider, useContext] as const;\n }\n\n /* -----------------------------------------------------------------------------------------------\n * createScope\n * ---------------------------------------------------------------------------------------------*/\n\n const createScope: CreateScope = () => {\n const scopeContexts = defaultContexts.map((defaultContext) => {\n return React.createContext(defaultContext);\n });\n return function useScope(scope: Scope) {\n const contexts = scope?.[scopeName] || scopeContexts;\n return React.useMemo(\n () => ({ [`__scope${scopeName}`]: { ...scope, [scopeName]: contexts } }),\n [scope, contexts]\n );\n };\n };\n\n createScope.scopeName = scopeName;\n return [createContext, composeContextScopes(createScope, ...createContextScopeDeps)] as const;\n}\n\n/* -------------------------------------------------------------------------------------------------\n * composeContextScopes\n * -----------------------------------------------------------------------------------------------*/\n\nfunction composeContextScopes(...scopes: CreateScope[]) {\n const baseScope = scopes[0];\n if (scopes.length === 1) return baseScope;\n\n const createScope: CreateScope = () => {\n const scopeHooks = scopes.map((createScope) => ({\n useScope: createScope(),\n scopeName: createScope.scopeName,\n }));\n\n return function useComposedScopes(overrideScopes) {\n const nextScopes = scopeHooks.reduce((nextScopes, { useScope, scopeName }) => {\n // We are calling a hook inside a callback which React warns against to avoid inconsistent\n // renders, however, scoping doesn't have render side effects so we ignore the rule.\n // eslint-disable-next-line react-hooks/rules-of-hooks\n const scopeProps = useScope(overrideScopes);\n const currentScope = scopeProps[`__scope${scopeName}`];\n return { ...nextScopes, ...currentScope };\n }, {});\n\n return React.useMemo(() => ({ [`__scope${baseScope.scopeName}`]: nextScopes }), [nextScopes]);\n };\n };\n\n createScope.scopeName = baseScope.scopeName;\n return createScope;\n}\n\n/* -----------------------------------------------------------------------------------------------*/\n\nexport { createContext, createContextScope };\nexport type { CreateScope, Scope };\n"],
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"names": ["createContext", "useContext", "createScope", "nextScopes"]
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}
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