typedash/dist/keyBy-Bx8eEPsQ.cjs.map

modern, type-safe collection of utility functions

{"version":3,"file":"keyBy-Bx8eEPsQ.cjs","names":[],"sources":["../src/functions/keyBy/keyBy.ts"],"sourcesContent":["/**\n * Creates an object composed of keys generated from the results of running each element of `array` through `keyGetter`.\n * The corresponding value of each key is the last element responsible for generating the key.\n * @param array The array to iterate over.\n * @param keyGetter The function used to extract the key from each element.\n * @returns An object with the keys mapped to the elements.\n * @example\n * ```ts\n * keyBy(\n *  [\n *    { id: 'a', value: 1 },\n *    { id: 'b', value: 2 },\n *    { id: 'c', value: 3 },\n *  ],\n *  (item) => item.id\n * )\n * // {\n * //   a: { id: 'a', value: 1 },\n * //   b: { id: 'b', value: 2 },\n * //   c: { id: 'c', value: 3 }\n * // }\n * ```\n */\nexport function keyBy<T, K extends PropertyKey>(\n  array: readonly T[],\n  keyGetter: (item: T) => K\n): Partial<Record<K, T>> {\n  return array.reduce(\n    (draftObject, currentItem) => {\n      const key = keyGetter(currentItem);\n\n      draftObject[key] = currentItem;\n\n      return draftObject;\n    },\n    {} as Partial<Record<K, T>>\n  );\n}\n"],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;AAuBA,SAAgB,MACd,OACA,WACuB;AACvB,QAAO,MAAM,QACV,aAAa,gBAAgB;EAC5B,MAAM,MAAM,UAAU,YAAY;AAElC,cAAY,OAAO;AAEnB,SAAO;IAET,EAAE,CACH"}