71 lines
No EOL
2.5 KiB
JavaScript
71 lines
No EOL
2.5 KiB
JavaScript
"use strict";
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var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = deepmerge;
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exports.isPlainObject = isPlainObject;
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var React = _interopRequireWildcard(require("react"));
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var _reactIs = require("react-is");
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// https://github.com/sindresorhus/is-plain-obj/blob/main/index.js
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function isPlainObject(item) {
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if (typeof item !== 'object' || item === null) {
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return false;
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}
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const prototype = Object.getPrototypeOf(item);
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return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(Symbol.toStringTag in item) && !(Symbol.iterator in item);
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}
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function deepClone(source) {
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if (/*#__PURE__*/React.isValidElement(source) || (0, _reactIs.isValidElementType)(source) || !isPlainObject(source)) {
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return source;
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}
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const output = {};
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Object.keys(source).forEach(key => {
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output[key] = deepClone(source[key]);
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});
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return output;
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}
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/**
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* Merge objects deeply.
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* It will shallow copy React elements.
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*
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* If `options.clone` is set to `false` the source object will be merged directly into the target object.
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*
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* @example
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* ```ts
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* deepmerge({ a: { b: 1 }, d: 2 }, { a: { c: 2 }, d: 4 });
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* // => { a: { b: 1, c: 2 }, d: 4 }
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* ````
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*
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* @param target The target object.
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* @param source The source object.
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* @param options The merge options.
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* @param options.clone Set to `false` to merge the source object directly into the target object.
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* @returns The merged object.
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*/
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function deepmerge(target, source, options = {
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clone: true
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}) {
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const output = options.clone ? {
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...target
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} : target;
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if (isPlainObject(target) && isPlainObject(source)) {
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Object.keys(source).forEach(key => {
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if (/*#__PURE__*/React.isValidElement(source[key]) || (0, _reactIs.isValidElementType)(source[key])) {
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output[key] = source[key];
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} else if (isPlainObject(source[key]) &&
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// Avoid prototype pollution
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Object.prototype.hasOwnProperty.call(target, key) && isPlainObject(target[key])) {
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// Since `output` is a clone of `target` and we have narrowed `target` in this block we can cast to the same type.
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output[key] = deepmerge(target[key], source[key], options);
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} else if (options.clone) {
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output[key] = isPlainObject(source[key]) ? deepClone(source[key]) : source[key];
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} else {
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output[key] = source[key];
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}
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});
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}
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return output;
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} |