<!DOCTYPE html>
<html>
<head>
<base href="." />
<title>angular playground</title>
<link rel="stylesheet" href="style.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js/dist/zone.js"></script>
<script src="https://unpkg.com/zone.js/dist/long-stack-trace-zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app')
.catch(console.error.bind(console));
</script>
</head>
<body>
<h2>Problem</h2>
Preserve original console.log call position (file + linenumber).
<my-app>
loading...
</my-app>
</body>
</html>
/* Styles go here */
### Angular Starter Plunker - Typescript
System.config({
//use typescript for compilation
transpiler: 'typescript',
//typescript compiler options
typescriptOptions: {
emitDecoratorMetadata: true
},
paths: {
'npm:': 'https://unpkg.com/'
},
//map tells the System loader where to look for things
map: {
'app': './src',
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
'@angular/animations': 'npm:@angular/animations/bundles/animations.umd.js',
'@angular/platform-browser/animations': 'npm:@angular/platform-browser/bundles/platform-browser-animations.umd.js',
'@angular/animations/browser': 'npm:@angular/animations/bundles/animations-browser.umd.js',
'@angular/core/testing': 'npm:@angular/core/bundles/core-testing.umd.js',
'@angular/common/testing': 'npm:@angular/common/bundles/common-testing.umd.js',
'@angular/compiler/testing': 'npm:@angular/compiler/bundles/compiler-testing.umd.js',
'@angular/platform-browser/testing': 'npm:@angular/platform-browser/bundles/platform-browser-testing.umd.js',
'@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic-testing.umd.js',
'@angular/http/testing': 'npm:@angular/http/bundles/http-testing.umd.js',
'@angular/router/testing': 'npm:@angular/router/bundles/router-testing.umd.js',
'rxjs': 'npm:rxjs',
'typescript': 'npm:typescript@2.2.1/lib/typescript.js'
},
//packages defines our app package
packages: {
app: {
main: './main.ts',
defaultExtension: 'ts'
},
rxjs: {
defaultExtension: 'js'
}
}
});
//main entry point
import {enableProdMode} from '@angular/core';
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';
// Remove annoying log message
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule)
//our root app component
import {Component, NgModule, VERSION} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import {Caller} from './caller';
@Component({
selector: 'my-app',
template: `
<div>
<span>Hello {{name}}</span>
<p>{{msg}}</p>
<button (click)="caller.loggingSequence()">Run sequence</button>
</div>
`,
providers: [Caller]
})
export class App {
name:string;
constructor(private caller: Caller) {
this.name = `Angular v${VERSION.full}`;
this.msg = `Please check the console.log for the output.`;
}
}
@NgModule({
imports: [ BrowserModule ],
declarations: [ App ],
bootstrap: [ App ]
})
export class AppModule {}
import { Injectable } from '@angular/core';
import { ConsoleLog as Console1 } from './solution1';
import { ConsoleLog as Console2 } from './solution2';
@Injectable()
export class Caller {
private _cLog1: Console1;
private _cLog2: Console2;
constructor() {
console.log('Caller init');
this._cLog1 = new Console1();
this._cLog2 = new Console2();
}
public loggingSequence() {
console.log(`
------------------------------------
Next 'solution' preserves the original call position. (caller.ts)
But the content isn't dynamic (same random number).
------------------------------------
`);
this._cLog1.start();
console.log('Foo');
console.log('Bar');
this._cLog1.stop();
console.log(`
------------------------------------
Next 'solution' is dynamic (changes random number).
But doesn't preserves the original call position, but re-sets it to solution2.ts (apply)
------------------------------------
`);
this._cLog2.start();
console.log('Foo');
console.log('Bar');
this._cLog2.stop();
console.log(`
------------------------------------
How can I combine both 'solutions'?
------------------------------------
`);
}
}
export class ConsoleLog {
private _isActive = false;
private _nativeLogFn: any;
constructor() {
// ----------------------
// Store the native console.log function, so it can be restored later
// ----------------------
this._nativeLogFn = console.log;
}
public start() {
if (!this._isActive) {
// ----------------------
// Create a new function as replacement for the native console.log
// function. *** This will be the subject of my question ***
// ----------------------
console.log = console.log.bind(console, Math.random());
this._isActive = true;
}
}
public stop() {
if (this._isActive) {
// Restore to native function
console.log = this._nativeLogFn;
this._isActive = false;
}
}
}
export class ConsoleLog {
private _isActive = false;
private _nativeLogFn: any;
constructor() {
// ----------------------
// Store the native console.log function, so it can be restored later
// ----------------------
this._nativeLogFn = console.log;
}
public start() {
if (!this._isActive) {
// ----------------------
// Create a new function as replacement for the native console.log
// function. *** This will be the subject of my question ***
// ----------------------
// console.log = console.log.bind(console, Math.random());
const consolelog = console.log;
console.log = function (...args) {
return consolelog.apply(this, [Math.random()].concat(args));
}
this._isActive = true;
}
}
public stop() {
if (this._isActive) {
// Restore to native function
console.log = this._nativeLogFn;
this._isActive = false;
}
}
}