+ private static isObject(item): boolean {
+ return item && typeof item === 'object' && Array.isArray(item) === false;
+ }
+
+ private static deepMerge(target: object, ...sources: object[]): object {
+ if (!sources.length) {
+ return target;
+ }
+ const source = sources.shift();
+
+ if (Configuration.isObject(target) && Configuration.isObject(source)) {
+ for (const key in source) {
+ if (Configuration.isObject(source[key])) {
+ if (!target[key]) {
+ Object.assign(target, { [key]: {} });
+ }
+ // eslint-disable-next-line @typescript-eslint/no-unsafe-argument
+ Configuration.deepMerge(target[key], source[key]);
+ } else {
+ // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+ Object.assign(target, { [key]: source[key] });
+ }
+ }
+ }
+ return Configuration.deepMerge(target, ...sources);
+ }
+