Angular Book

Code Linting

Checking code is one of the essential steps. Angular CLI ships with the TSLint support and predefined set of rules in the tsconfig.json file.

ng lint

Default auto-generated project should contain no errors. You should see the following result in the console:

All files pass linting.

Let's try to ensure TSLint works as expected by modifying the /src/app/app.component.ts file. Just change single quotes with double quotes like below:

export class AppComponent {
  title = "app works!";
}

Now running ng lint should produce next output:

src/app/app.component.ts[9, 11]: " should be '
Lint errors found in the listed files.