32 lines
845 B
TypeScript
32 lines
845 B
TypeScript
/**
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* Simple object check.
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* @param item
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* @returns {boolean} Is Object, not array, null or undefined.
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*/
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export function isObject(item: any): boolean {
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return item && typeof item === 'object' && !Array.isArray(item);
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}
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/**
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* Deep merge two objects.
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* @param target Merge `sources` into this object.
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* @param ...sources Objects to use in merge.
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*/
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export function mergeDeep(target: any, ...sources: any[]) {
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if (!sources.length) return target;
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const source = sources.shift();
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if (isObject(target) && isObject(source)) {
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for (const key in source) {
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if (isObject(source[key])) {
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if (!target[key]) Object.assign(target, { [key]: {} });
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mergeDeep(target[key], source[key]);
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} else {
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Object.assign(target, { [key]: source[key] });
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}
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}
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}
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return mergeDeep(target, ...sources);
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}
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