/** * @since 2.10.0 */ import * as _ from './internal'; // ------------------------------------------------------------------------------------- // instances // ------------------------------------------------------------------------------------- /** * Return a semigroup which works like `Object.assign`. * * @example * import { getAssignSemigroup } from 'fp-ts/struct' * * interface Person { * readonly name: string * readonly age: number * } * * const S = getAssignSemigroup() * assert.deepStrictEqual(S.concat({ name: 'name', age: 23 }, { name: 'name', age: 24 }), { name: 'name', age: 24 }) * * @category instances * @since 2.10.0 */ export var getAssignSemigroup = function () { return ({ concat: function (first, second) { return Object.assign({}, first, second); } }); }; // ------------------------------------------------------------------------------------- // utils // ------------------------------------------------------------------------------------- /** * Creates a new object by recursively evolving a shallow copy of `a`, according to the `transformation` functions. * * @example * import { pipe } from 'fp-ts/function' * import { evolve } from 'fp-ts/struct' * * assert.deepStrictEqual( * pipe( * { a: 'a', b: 1 }, * evolve({ * a: (a) => a.length, * b: (b) => b * 2 * }) * ), * { a: 1, b: 2 } * ) * * @since 2.11.0 */ export var evolve = function (transformations) { return function (a) { var out = {}; for (var k in a) { if (_.has.call(a, k)) { out[k] = transformations[k](a[k]); } } return out; }; };