marys
48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
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exports.apply = apply;
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/**
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* Test if a value is a plain object.
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* @param {*} val - A value.
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* @return {boolean} true if `val` is a plain object.
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*/
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var isObject = function isObject(val) {
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return val != null && (typeof val === 'undefined' ? 'undefined' : _typeof(val)) === 'object' && Array.isArray(val) === false;
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};
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/**
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* Apply a JSON merge patch. The origin is *not* modified, but unchanged
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* properties will be recycled.
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*
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* @param {*} origin - The value to patch.
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* @param {*} patch - An [RFC 7396](https://tools.ietf.org/html/rfc7396) patch.
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* @return {*} The patched value.
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*/
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function apply(origin, patch) {
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if (!isObject(patch)) {
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// If the patch is not an object, it replaces the origin.
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return patch;
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}
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var result = !isObject(origin) ? // Non objects are being replaced.
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{} : // Make sure we never modify the origin.
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Object.assign({}, origin);
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Object.keys(patch).forEach(function (key) {
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var patchVal = patch[key];
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if (patchVal === null) {
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delete result[key];
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} else {
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result[key] = apply(result[key], patchVal);
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}
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});
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return result;
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}
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exports.default = apply; |