/** * lodash set * @param {*} obj * @param {*} path * @param {*} value * @returns */ function _set(obj, path, value) { if (Object(obj) !== obj) return obj // When obj is not an object // If not yet an array, get the keys from the string-path if (!Array.isArray(path)) path = path.toString().match(/[^.[\]]+/g) || [] path.slice(0, -1).reduce((a, c, i) => // Iterate all of them except the last one Object(a[c]) === a[c] // Does the key exist and is its value an object? // Yes: then follow that path ? a[c] // No: create the key. Is the next key a potential array-index? : a[c] = Math.abs(path[i + 1]) >> 0 === +path[i + 1] ? [] // Yes: assign a new array object : {}, // No: assign a new plain object obj)[path[path.length - 1]] = value // Finally assign the value to the last key return obj // Return the top-level object to allow chaining } export default _set