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uni_modules/zp-mixins/utils/_set.js

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+/**
+ * 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