collection.js
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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { Observable } from 'rxjs/Observable';
import { fromPromise } from 'rxjs/observable/fromPromise';
import { of } from 'rxjs/observable/of';
import { concatAll } from 'rxjs/operator/concatAll';
import { every } from 'rxjs/operator/every';
import * as l from 'rxjs/operator/last';
import { map } from 'rxjs/operator/map';
import { mergeAll } from 'rxjs/operator/mergeAll';
import { PRIMARY_OUTLET } from '../shared';
/**
* @param {?} a
* @param {?} b
* @return {?}
*/
export function shallowEqualArrays(a, b) {
if (a.length !== b.length)
return false;
for (var /** @type {?} */ i = 0; i < a.length; ++i) {
if (!shallowEqual(a[i], b[i]))
return false;
}
return true;
}
/**
* @param {?} a
* @param {?} b
* @return {?}
*/
export function shallowEqual(a, b) {
var /** @type {?} */ k1 = Object.keys(a);
var /** @type {?} */ k2 = Object.keys(b);
if (k1.length != k2.length) {
return false;
}
var /** @type {?} */ key;
for (var /** @type {?} */ i = 0; i < k1.length; i++) {
key = k1[i];
if (a[key] !== b[key]) {
return false;
}
}
return true;
}
/**
* @param {?} a
* @return {?}
*/
export function flatten(a) {
var /** @type {?} */ target = [];
for (var /** @type {?} */ i = 0; i < a.length; ++i) {
for (var /** @type {?} */ j = 0; j < a[i].length; ++j) {
target.push(a[i][j]);
}
}
return target;
}
/**
* @param {?} a
* @return {?}
*/
export function first(a) {
return a.length > 0 ? a[0] : null;
}
/**
* @param {?} a
* @return {?}
*/
export function last(a) {
return a.length > 0 ? a[a.length - 1] : null;
}
/**
* @param {?} bools
* @return {?}
*/
export function and(bools) {
return !bools.some(function (v) { return !v; });
}
/**
* @param {?} m1
* @param {?} m2
* @return {?}
*/
export function merge(m1, m2) {
var /** @type {?} */ m = {};
for (var attr in m1) {
if (m1.hasOwnProperty(attr)) {
m[attr] = m1[attr];
}
}
for (var attr in m2) {
if (m2.hasOwnProperty(attr)) {
m[attr] = m2[attr];
}
}
return m;
}
/**
* @param {?} map
* @param {?} callback
* @return {?}
*/
export function forEach(map, callback) {
for (var prop in map) {
if (map.hasOwnProperty(prop)) {
callback(map[prop], prop);
}
}
}
/**
* @param {?} obj
* @param {?} fn
* @return {?}
*/
export function waitForMap(obj, fn) {
var /** @type {?} */ waitFor = [];
var /** @type {?} */ res = {};
forEach(obj, function (a, k) {
if (k === PRIMARY_OUTLET) {
waitFor.push(map.call(fn(k, a), function (_) {
res[k] = _;
return _;
}));
}
});
forEach(obj, function (a, k) {
if (k !== PRIMARY_OUTLET) {
waitFor.push(map.call(fn(k, a), function (_) {
res[k] = _;
return _;
}));
}
});
if (waitFor.length > 0) {
var /** @type {?} */ concatted$ = concatAll.call(of.apply(void 0, waitFor));
var /** @type {?} */ last$ = l.last.call(concatted$);
return map.call(last$, function () { return res; });
}
return of(res);
}
/**
* @param {?} observables
* @return {?}
*/
export function andObservables(observables) {
var /** @type {?} */ merged$ = mergeAll.call(observables);
return every.call(merged$, function (result) { return result === true; });
}
/**
* @param {?} value
* @return {?}
*/
export function wrapIntoObservable(value) {
if (value instanceof Observable) {
return value;
}
if (value instanceof Promise) {
return fromPromise(value);
}
return of(value);
}
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