json-keypath/index.js

Get and Set values in JSON objects using keypaths

'use strict';

function setValue (object, key, val, strict) {
	if (object instanceof Object && typeof key === 'string') {
		var a = key.split('.');
		var n = a.length - 1;
		for (var i = 0; i < n; i += 1) {
			var k = a[i];
			if (k in object) {
				object = object[k];
			} else {
				if (strict === true) {
					throw new Error('Invalid path');
				} else {
					object[k] = {};
					object = object[k];
				}
			}
		}
		object[a[n]] = val;
	} else {
		throw new Error('Invalid arguments');
	}
}

function getValue (object, key, strict) {
	if (object instanceof Object && typeof key === 'string') {
		var a = key.split('.');
		
		for (var i = 0; i < a.length; i++ ) {
			var k = a[i];
			if (k in object) {
			object = object[k];
			} else {
				if (strict === true) {
					throw new Error('Invalid path');
				} else {
					return undefined;
				}
			}
		}
		return object;
	}
}

module.exports = {
	getValue: getValue,
	setValue: setValue
};