@ark7/lazyload/index.d.ts.map

@ark7/lazyload delays loading of object creation. Object will not be loaded before accessing its properties.

{"version":3,"sources":["../src/index.ts"],"names":[],"mappings":"AAAA,oBAAY,UAAU,CAAC,CAAC,IAAI,CAAC,GAAG,IAAI,EAAE,GAAG,EAAE,KAAK,CAAC,CAAC;AAElD,MAAM,CAAC,OAAO,UAAU,QAAQ,CAAC,CAAC,EAAE,EAAE,EAAE,UAAU,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,CAAC,CAAC,CAiFpE","file":"index.d.ts","sourcesContent":["export type LazyLoadFn<T> = (...args: any[]) => T;\n\nexport default function lazyload<T>(fn: LazyLoadFn<T>): LazyLoadFn<T> {\n  const fnWrap: LazyLoadFn<T> = function () {\n    let calculated = false;\n    let val: any;\n\n    function getVal() {\n      if (!calculated) {\n        val = fn.apply(this, arguments);\n        calculated = true;\n      }\n      return val;\n    }\n\n    const handler = {\n      apply(_target: any, thisArg: any, argArray: any[]) {\n        const fn = getVal();\n        return fn.apply(thisArg, argArray);\n      },\n\n      construct(_target: any, argArray: any[]) {\n        const cls = getVal();\n        return new cls(...argArray);\n      },\n\n      defineProperty(\n        _target: any,\n        p: string | symbol,\n        attributes: PropertyDescriptor,\n      ) {\n        return Object.defineProperty(getVal(), p, attributes);\n      },\n\n      deleteProperty(_target: any, p: string | symbol) {\n        return Reflect.deleteProperty(getVal(), p);\n      },\n\n      get(_target: any, prop: string | symbol) {\n        return getVal()[prop];\n      },\n\n      getOwnPropertyDescriptor(\n        _target: any,\n        p: string | symbol,\n      ): PropertyDescriptor | undefined {\n        return Object.getOwnPropertyDescriptor(getVal(), p);\n      },\n\n      getPrototypeOf(_target: any) {\n        return Object.getPrototypeOf(getVal());\n      },\n\n      has(_target: any, p: string | symbol) {\n        return Reflect.has(getVal(), p);\n      },\n\n      isExtensible(_target: any) {\n        return Reflect.isExtensible(getVal());\n      },\n\n      ownKeys(_target: any) {\n        return Reflect.ownKeys(getVal());\n      },\n\n      preventExtensions(_target: any) {\n        return Reflect.preventExtensions(getVal());\n      },\n\n      set(_target: any, p: string | symbol, value: any) {\n        getVal()[p] = value;\n        return true;\n      },\n\n      setPrototypeOf(_target: any, v: object | null) {\n        return Reflect.setPrototypeOf(getVal(), v);\n      },\n    };\n\n    return new Proxy(function () {}, handler) as T;\n  };\n\n  return fnWrap;\n}\n"],"sourceRoot":"/Users/yz/workspace/lazyload/src"}