56 lines
1.4 KiB
JavaScript
56 lines
1.4 KiB
JavaScript
// a fairly simple deep merge based on: https://gist.github.com/ahtcx/0cd94e62691f539160b32ecda18af3d6
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function isObject(obj) {
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return obj && typeof obj === "object";
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}
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export function merge(...objects) {
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function deepMergeInner(target, source) {
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Object.keys(source).forEach(key => {
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const targetValue = target[key];
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const sourceValue = source[key];
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if (Array.isArray(targetValue) && Array.isArray(sourceValue)) {
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target[key] = targetValue.concat(sourceValue);
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} else if (isObject(targetValue) && isObject(sourceValue)) {
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target[key] = deepMergeInner(
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Object.assign({}, targetValue),
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sourceValue
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);
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} else {
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target[key] = sourceValue;
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}
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});
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return target;
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}
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if (objects.some(object => object && !isObject(object))) {
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throw new Error('deepMerge: all values should be of type "object"');
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}
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const target = objects.shift();
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let source;
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while ((source = objects.shift())) {
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deepMergeInner(target, source || {});
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}
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return target;
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}
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export function deepEqual(obj1, obj2) {
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if (obj1 === obj2) {
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return true;
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} else if (isObject(obj1) && isObject(obj2)) {
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if (Object.keys(obj1).length !== Object.keys(obj2).length) {
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return false;
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}
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for (var prop in obj1) {
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if (!deepEqual(obj1[prop], obj2[prop])) {
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return false;
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}
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}
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return true;
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}
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}
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