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feat(module-loader): add caching for ngModuleLoader on load

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This commit is contained in:
Brandy Carney
2017-03-06 18:23:31 -05:00
parent c6343951ae
commit 17359b7b8c
2 changed files with 14 additions and 12 deletions
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14
src/util/module-loader.ts
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@@ -1,4 +1,4 @@
import { ComponentFactoryResolver, Injectable, Injector, OpaqueToken, Type } from '@angular/core';
import { ComponentFactoryResolver, Injectable, Injector, NgModuleFactory, OpaqueToken, Type } from '@angular/core';
import { DeepLinkConfig } from '../navigation/nav-util';
import { NgModuleLoader } from './ng-module-loader';
@@ -15,6 +15,8 @@ export class ModuleLoader {
/** @internal */
_cfrMap = new Map<any, ComponentFactoryResolver>();
_promiseMap = new Map<string, Promise<NgModuleFactory<any>>>();
constructor(
private _ngModuleLoader: NgModuleLoader,
private _injector: Injector) {}
@@ -25,7 +27,15 @@ export class ModuleLoader {
const splitString = modulePath.split(SPLITTER);
return this._ngModuleLoader.load(splitString[0], splitString[1]).then(loadedModule => {
let promise = this._promiseMap.get(modulePath);
if (!promise) {
promise = this._ngModuleLoader.load(splitString[0], splitString[1]);
this._promiseMap.set(modulePath, promise);
}
return promise.then(loadedModule => {
// clear it from the cache
this._promiseMap.delete(modulePath);
console.timeEnd(`ModuleLoader, load: ${modulePath}'`);
const ref = loadedModule.create(this._injector);