@tanstack/react-router/dist/cjs/utils.cjs.map

Modern and scalable routing for React applications

{"version":3,"file":"utils.cjs","names":["React","isServer"],"sources":["../../src/utils.ts"],"sourcesContent":["'use client'\nimport * as React from 'react'\nimport { isServer } from '@tanstack/router-core/isServer'\n\n// Safe version of React.use() that will not cause compilation errors against\n// React 18 with Webpack, which statically analyzes imports and fails when it\n// sees React.use referenced (since 'use' is not exported from React 18).\n// This uses a dynamic string lookup to avoid the static analysis.\n// eslint-disable-next-line prefer-const -- Must be `let` to prevent bundler constant-folding\nlet REACT_USE = 'use'\n\n/**\n * React.use if available (React 19+), undefined otherwise.\n * Use dynamic lookup to avoid Webpack compilation errors with React 18.\n */\nexport const reactUse:\n  | (<T>(usable: Promise<T> | React.Context<T>) => T)\n  | undefined = (React as any)[REACT_USE]\n\nexport function useStableCallback<T extends (...args: Array<any>) => any>(\n  fn: T,\n): T {\n  const fnRef = React.useRef(fn)\n  fnRef.current = fn\n\n  const ref = React.useRef((...args: Array<any>) => fnRef.current(...args))\n  return ref.current as T\n}\n\nexport const useLayoutEffect =\n  (isServer ?? typeof window === 'undefined')\n    ? React.useEffect\n    : React.useLayoutEffect\n\n/**\n * Taken from https://www.developerway.com/posts/implementing-advanced-use-previous-hook#part3\n */\nexport function usePrevious<T>(value: T): T | null {\n  // initialise the ref with previous and current values\n  const ref = React.useRef<{ value: T; prev: T | null }>({\n    value: value,\n    prev: null,\n  })\n\n  const current = ref.current.value\n\n  // if the value passed into hook doesn't match what we store as \"current\"\n  // move the \"current\" to the \"previous\"\n  // and store the passed value as \"current\"\n  if (value !== current) {\n    ref.current = {\n      value: value,\n      prev: current,\n    }\n  }\n\n  // return the previous value only\n  return ref.current.prev\n}\n"],"mappings":";;;;;;;;;AAeA,IAAa,WAEIA,MAAc;AAY/B,IAAa,kBACVC,+BAAAA,YAAY,OAAO,WAAW,cAC3BD,MAAM,YACNA,MAAM"}