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// Copyright (c) 2020 Jozty. All rights reserved. MIT license.
import { isArguments, isArray, isObject, isString } from './utils/is.ts';import type { EmptyObj } from './utils/types.ts';
type EmptyReturnType<T> = T extends (infer U)[] ? U[]  : T extends string ? ''  : T extends EmptyObj ? EmptyObj  : T;
/** * Returns the empty value of its argument's type. * *      Fae.empty([1, 2, 3])     //=> [] *      Fae.empty('unicorns')    //=> '' *      Fae.empty({x: 1, y: 2})  //=> {} */export function empty<T>(x: T): EmptyReturnType<T> {  if (x === null || x === undefined) return x as EmptyReturnType<T>;
  // @ts-ignore: types handled by EmptyReturnType  if (isArray(x)) return [];
  // @ts-ignore: types handled by EmptyReturnType  if (isString(x)) return '';
  // @ts-ignore: types handled by EmptyReturnType  if (isObject(x)) return {};
  if (isArguments(x)) {    // @ts-ignore: types handled by EmptyReturnType    return (function () {      return arguments;    })();  }
  // @ts-ignore: types handled by EmptyReturnType  return null;}