mirror of https://github.com/denoland/deno.git
50 lines
1.3 KiB
TypeScript
50 lines
1.3 KiB
TypeScript
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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import { assert } from "./assert.ts";
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export function deepAssign<T, U>(target: T, source: U): T & U;
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export function deepAssign<T, U, V>(
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target: T,
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source1: U,
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source2: V,
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): T & U & V;
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export function deepAssign<T, U, V, W>(
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target: T,
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source1: U,
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source2: V,
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source3: W,
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): T & U & V & W;
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export function deepAssign(
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// deno-lint-ignore no-explicit-any
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target: Record<string, any>,
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// deno-lint-ignore no-explicit-any
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...sources: any[]
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): // deno-lint-ignore ban-types
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object | undefined {
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for (let i = 0; i < sources.length; i++) {
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const source = sources[i];
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if (!source || typeof source !== `object`) {
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return;
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}
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Object.entries(source).forEach(([key, value]): void => {
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if (value instanceof Date) {
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target[key] = new Date(value);
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return;
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}
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if (!value || typeof value !== `object`) {
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target[key] = value;
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return;
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}
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if (Array.isArray(value)) {
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target[key] = [];
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}
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// value is an Object
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if (typeof target[key] !== `object` || !target[key]) {
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target[key] = {};
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}
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assert(value);
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deepAssign(target[key] as Record<string, unknown>, value);
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});
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}
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return target;
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}
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