t2t2 / vue-syncers-feathers

import * as feathersUtil from 'feathers-commons/lib/utils'

export const each = feathersUtil.each

export const some = feathersUtil._.some

/**

 * Empty function

 */

export function noop() {

}

/**

 * Log debug in user's console

 *

 * @param args

 */

export function warn(...args) {

	/* istanbul ignore next */

	if (console || window.console) {

		console.warn('[vue-syncers-feathers]', ...args)

	}

}

const numberRegex = /^\d+$/

/**

 * Test if a value seems like a number

 *

 * @param value

 * @returns {boolean}

 */

export function isNumericIDLike(value) {

	return (typeof value !== 'number' && numberRegex.test(value))

}

/**

 * Return object with only selected keys

 *

 * @from https://github.com/feathersjs/feathers-memory

 * @param source

 * @param keys

 * @returns {object}

 */

export function pick(source, ...keys) {

	const result = {}

	for (const key of keys) {

		result[key] = source[key]

	}

	return result

}

/**

 * Check if object is JSONable

 *

 * @from https://github.com/vuejs/vue/blob/0b902e0c28f4f324ffb8efbc9db74127430f8a42/src/shared/util.js#L155

 * @param {*} obj

 * @returns {boolean}

 */

function isObject(obj) {

	return obj !== null && typeof obj === 'object'

}

/**

 * Loosely check if objects are equal

 *

 * @from https://github.com/vuejs/vue/blob/0b902e0c28f4f324ffb8efbc9db74127430f8a42/src/shared/util.js

 * @param {*} a

 * @param {*} b

 * @returns {boolean}

 */

export function looseEqual(a, b) {

	const isObjectA = isObject(a)

	const isObjectB = isObject(b)

	if (isObjectA && isObjectB) {

		try {

			return JSON.stringify(a) === JSON.stringify(b)

		} catch (err) {

			// Possible circular reference

			return a === b

		}

	} else if (!isObjectA && !isObjectB) {

		return String(a) === String(b)

	} else {

		return false

	}

}