I had this TSLint error saying this:
TSLint: Type string trivially inferred from a string literal, remove type annotation(no-inferrable-types)
The code looked like this:
public recentToken: string = '';
Because it is empty, you can set this differently. Some argue this is "clutter" from TypeScript, but it makes sense if you think about it.
public recentToken!: string;
If you don't like this kind of TSLint stuff, set your configuration for the no-inferrable-types
in your tslint.json file as
no-inferrable-types: false