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28 lines
866 B
JavaScript
28 lines
866 B
JavaScript
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import _extends from "@babel/runtime/helpers/esm/extends";
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import _typeof from "@babel/runtime/helpers/esm/typeof";
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export function isPlainObject(item) {
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return item && _typeof(item) === 'object' && item.constructor === Object;
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}
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export default function deepmerge(target, source) {
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var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {
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clone: true
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};
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var output = options.clone ? _extends({}, target) : target;
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if (isPlainObject(target) && isPlainObject(source)) {
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Object.keys(source).forEach(function (key) {
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// Avoid prototype pollution
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if (key === '__proto__') {
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return;
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}
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if (isPlainObject(source[key]) && key in target) {
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output[key] = deepmerge(target[key], source[key], options);
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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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}
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