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recursively merge two javascript objects
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| /** | |
| * Simple is object check. | |
| * @param item | |
| * @returns {boolean} | |
| */ | |
| function isObject(item) { | |
| return (item && typeof item === 'object' && !Array.isArray(item)); | |
| } | |
| /** | |
| * Deep merge two objects. | |
| * @param target | |
| * @param source | |
| */ | |
| function mergeDeep(target, source) { | |
| if (isObject(target) && isObject(source)) { | |
| for (const key in source) { | |
| if (isObject(source[key])) { | |
| if (!target[key]) Object.assign(target, { [key]: {} }); | |
| mergeDeep(target[key], source[key]); | |
| } else { | |
| Object.assign(target, { [key]: source[key] }); | |
| } | |
| } | |
| } | |
| return target; | |
| } |
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