{"version":3,"file":"map.js","sources":["../src/directives/map.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2021 Google LLC\n * SPDX-License-Identifier: BSD-3-Clause\n */\n\n/**\n * Returns an iterable containing the result of calling `f(value)` on each\n * value in `items`.\n *\n * @example\n *\n * ```ts\n * render() {\n *   return html`\n *     <ul>\n *       ${map(items, (i) => html`<li>${i}</li>`)}\n *     </ul>\n *   `;\n * }\n * ```\n */\nexport function* map<T>(\n  items: Iterable<T> | undefined,\n  f: (value: T, index: number) => unknown\n) {\n  if (items !== undefined) {\n    let i = 0;\n    for (const value of items) {\n      yield f(value, i++);\n    }\n  }\n}\n"],"names":["map","items","f","undefined","i","value"],"mappings":";;;;;SAsBiBA,EACfC,EACAC,GAEA,QAAcC,IAAVF,EAAqB,CACvB,IAAIG,EAAI,EACR,IAAK,MAAMC,KAASJ,QACZC,EAAEG,EAAOD,IAElB,CACH"}