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

Modern and scalable routing for React applications

{"version":3,"file":"utils.cjs","sources":["../../src/utils.ts"],"sourcesContent":["import * as React from 'react'\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  typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect\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\n/**\n * React hook to wrap `IntersectionObserver`.\n *\n * This hook will create an `IntersectionObserver` and observe the ref passed to it.\n *\n * When the intersection changes, the callback will be called with the `IntersectionObserverEntry`.\n *\n * @param ref - The ref to observe\n * @param intersectionObserverOptions - The options to pass to the IntersectionObserver\n * @param options - The options to pass to the hook\n * @param callback - The callback to call when the intersection changes\n * @returns The IntersectionObserver instance\n * @example\n * ```tsx\n * const MyComponent = () => {\n * const ref = React.useRef<HTMLDivElement>(null)\n * useIntersectionObserver(\n *  ref,\n *  (entry) => { doSomething(entry) },\n *  { rootMargin: '10px' },\n *  { disabled: false }\n * )\n * return <div ref={ref} />\n * ```\n */\nexport function useIntersectionObserver<T extends Element>(\n  ref: React.RefObject<T | null>,\n  callback: (entry: IntersectionObserverEntry | undefined) => void,\n  intersectionObserverOptions: IntersectionObserverInit = {},\n  options: { disabled?: boolean } = {},\n): IntersectionObserver | null {\n  const isIntersectionObserverAvailable = React.useRef(\n    typeof IntersectionObserver === 'function',\n  )\n\n  const observerRef = React.useRef<IntersectionObserver | null>(null)\n\n  React.useEffect(() => {\n    if (\n      !ref.current ||\n      !isIntersectionObserverAvailable.current ||\n      options.disabled\n    ) {\n      return\n    }\n\n    observerRef.current = new IntersectionObserver(([entry]) => {\n      callback(entry)\n    }, intersectionObserverOptions)\n\n    observerRef.current.observe(ref.current)\n\n    return () => {\n      observerRef.current?.disconnect()\n    }\n  }, [callback, intersectionObserverOptions, options.disabled, ref])\n\n  return observerRef.current\n}\n\n/**\n * React hook to take a `React.ForwardedRef` and returns a `ref` that can be used on a DOM element.\n *\n * @param ref - The forwarded ref\n * @returns The inner ref returned by `useRef`\n * @example\n * ```tsx\n * const MyComponent = React.forwardRef((props, ref) => {\n *  const innerRef = useForwardedRef(ref)\n *  return <div ref={innerRef} />\n * })\n * ```\n */\nexport function useForwardedRef<T>(ref?: React.ForwardedRef<T>) {\n  const innerRef = React.useRef<T>(null)\n  React.useImperativeHandle(ref, () => innerRef.current!, [])\n  return innerRef\n}\n"],"names":["React"],"mappings":";;;;;;;;;;;;;;;;;;;;AAEO,SAAS,kBACd,IACG;AACG,QAAA,QAAQA,iBAAM,OAAO,EAAE;AAC7B,QAAM,UAAU;AAEV,QAAA,MAAMA,iBAAM,OAAO,IAAI,SAAqB,MAAM,QAAQ,GAAG,IAAI,CAAC;AACxE,SAAO,IAAI;AACb;AAEO,MAAM,kBACX,OAAO,WAAW,cAAcA,iBAAM,kBAAkBA,iBAAM;AAKzD,SAAS,YAAe,OAAoB;AAE3C,QAAA,MAAMA,iBAAM,OAAqC;AAAA,IACrD;AAAA,IACA,MAAM;AAAA,EAAA,CACP;AAEK,QAAA,UAAU,IAAI,QAAQ;AAK5B,MAAI,UAAU,SAAS;AACrB,QAAI,UAAU;AAAA,MACZ;AAAA,MACA,MAAM;AAAA,IACR;AAAA,EAAA;AAIF,SAAO,IAAI,QAAQ;AACrB;AA2BgB,SAAA,wBACd,KACA,UACA,8BAAwD,CACxD,GAAA,UAAkC,IACL;AAC7B,QAAM,kCAAkCA,iBAAM;AAAA,IAC5C,OAAO,yBAAyB;AAAA,EAClC;AAEM,QAAA,cAAcA,iBAAM,OAAoC,IAAI;AAElEA,mBAAM,UAAU,MAAM;AACpB,QACE,CAAC,IAAI,WACL,CAAC,gCAAgC,WACjC,QAAQ,UACR;AACA;AAAA,IAAA;AAGF,gBAAY,UAAU,IAAI,qBAAqB,CAAC,CAAC,KAAK,MAAM;AAC1D,eAAS,KAAK;AAAA,OACb,2BAA2B;AAElB,gBAAA,QAAQ,QAAQ,IAAI,OAAO;AAEvC,WAAO,MAAM;;AACX,wBAAY,YAAZ,mBAAqB;AAAA,IACvB;AAAA,EAAA,GACC,CAAC,UAAU,6BAA6B,QAAQ,UAAU,GAAG,CAAC;AAEjE,SAAO,YAAY;AACrB;AAeO,SAAS,gBAAmB,KAA6B;AACxD,QAAA,WAAWA,iBAAM,OAAU,IAAI;AACrCA,mBAAM,oBAAoB,KAAK,MAAM,SAAS,SAAU,CAAA,CAAE;AACnD,SAAA;AACT;;;;;;"}