--- /dev/null
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isObjectNotArray = exports.deepMerge = void 0;
+/**
+ * Check if the variable contains an object strictly rejecting arrays
+ * @param obj an object
+ * @returns `true` if obj is an object
+ */
+function isObjectNotArray(obj) {
+ return typeof obj === 'object' && !Array.isArray(obj);
+}
+exports.isObjectNotArray = isObjectNotArray;
+/**
+ * Pure function - doesn't mutate either parameter!
+ * Merges two objects together deeply, overwriting the properties in first with the properties in second
+ * @param first The first object
+ * @param second The second object
+ * @returns a new object
+ */
+function deepMerge(first = {}, second = {}) {
+ // get the unique set of keys across both objects
+ const keys = new Set(Object.keys(first).concat(Object.keys(second)));
+ return Array.from(keys).reduce((acc, key) => {
+ const firstHasKey = key in first;
+ const secondHasKey = key in second;
+ const firstValue = first[key];
+ const secondValue = second[key];
+ if (firstHasKey && secondHasKey) {
+ if (isObjectNotArray(firstValue) && isObjectNotArray(secondValue)) {
+ // object type
+ acc[key] = deepMerge(firstValue, secondValue);
+ }
+ else {
+ // value type
+ acc[key] = secondValue;
+ }
+ }
+ else if (firstHasKey) {
+ acc[key] = firstValue;
+ }
+ else {
+ acc[key] = secondValue;
+ }
+ return acc;
+ }, {});
+}
+exports.deepMerge = deepMerge;
+//# sourceMappingURL=deepMerge.js.map
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