util.js
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/**
* Utility functions.
*/
import Promise from './promise';
var debug = false, util = {}, {hasOwnProperty} = {}, {slice} = [];
export const inBrowser = typeof window !== 'undefined';
export default function (Vue) {
util = Vue.util;
debug = Vue.config.debug || !Vue.config.silent;
}
export function warn(msg) {
if (typeof console !== 'undefined' && debug) {
console.warn('[VueResource warn]: ' + msg);
}
}
export function error(msg) {
if (typeof console !== 'undefined') {
console.error(msg);
}
}
export function nextTick(cb, ctx) {
return util.nextTick(cb, ctx);
}
export function trim(str) {
return str ? str.replace(/^\s*|\s*$/g, '') : '';
}
export function toLower(str) {
return str ? str.toLowerCase() : '';
}
export function toUpper(str) {
return str ? str.toUpperCase() : '';
}
export const isArray = Array.isArray;
export function isString(val) {
return typeof val === 'string';
}
export function isBoolean(val) {
return val === true || val === false;
}
export function isFunction(val) {
return typeof val === 'function';
}
export function isObject(obj) {
return obj !== null && typeof obj === 'object';
}
export function isPlainObject(obj) {
return isObject(obj) && Object.getPrototypeOf(obj) == Object.prototype;
}
export function isBlob(obj) {
return typeof Blob !== 'undefined' && obj instanceof Blob;
}
export function isFormData(obj) {
return typeof FormData !== 'undefined' && obj instanceof FormData;
}
export function when(value, fulfilled, rejected) {
var promise = Promise.resolve(value);
if (arguments.length < 2) {
return promise;
}
return promise.then(fulfilled, rejected);
}
export function options(fn, obj, opts) {
opts = opts || {};
if (isFunction(opts)) {
opts = opts.call(obj);
}
return merge(fn.bind({$vm: obj, $options: opts}), fn, {$options: opts});
}
export function each(obj, iterator) {
var i, key;
if (isArray(obj)) {
for (i = 0; i < obj.length; i++) {
iterator.call(obj[i], obj[i], i);
}
} else if (isObject(obj)) {
for (key in obj) {
if (hasOwnProperty.call(obj, key)) {
iterator.call(obj[key], obj[key], key);
}
}
}
return obj;
}
export const assign = Object.assign || _assign;
export function merge(target) {
var args = slice.call(arguments, 1);
args.forEach((source) => {
_merge(target, source, true);
});
return target;
}
export function defaults(target) {
var args = slice.call(arguments, 1);
args.forEach((source) => {
for (var key in source) {
if (target[key] === undefined) {
target[key] = source[key];
}
}
});
return target;
}
function _assign(target) {
var args = slice.call(arguments, 1);
args.forEach((source) => {
_merge(target, source);
});
return target;
}
function _merge(target, source, deep) {
for (var key in source) {
if (deep && (isPlainObject(source[key]) || isArray(source[key]))) {
if (isPlainObject(source[key]) && !isPlainObject(target[key])) {
target[key] = {};
}
if (isArray(source[key]) && !isArray(target[key])) {
target[key] = [];
}
_merge(target[key], source[key], deep);
} else if (source[key] !== undefined) {
target[key] = source[key];
}
}
}