Angular 2 Webpack演示不起作用

Question

I have completed steps for official tutorial and I got error:

Failed to load app.component.html ; Zone: <root> ; Task: Promise.then ; Value: Failed to load app.component.html undefined

My Github Repo

I have spotted another web page on web with same problem: Example

Could problem be in Angular itself?

Answer 1

I traced the issue by starting to "debug" angular2-template-loader with console log adding: console.log("+++++++"+source); just after the function definition. By doing it I saw that not all the ts file were processed and in particular app.component.ts.

Then I saw in the src folder .js and .map files, so I deleted it and added in the tsconfig.json those properties after compilerOptions (outside it): "compileOnSave": false, "buildOnSave": false

Run again npm start and now the application loads successfully.

@TeodorKolev: I cloned your repo, npm install and npm start and replicated the error. I deleted the .js and .map files created, then added the properties and then npm start again and now it's working.