no-subscribe-handlers.md

Disallow passing handlers to subscribe (rxjs-x/no-subscribe-handlers)

💭 This rule requires type information.

This rule effects failures whenever subscribe is called with handlers.

Rule details

Examples of incorrect code for this rule:

import { of } from "rxjs";
import { tap } from "rxjs/operators";

of(42, 54).subscribe((value) => console.log(value));

import { of } from "rxjs";
import { tap } from "rxjs/operators";

of(42, 54).subscribe({
  next: (value) => console.log(value),
});

Examples of correct code for this rule:

import { of } from "rxjs";

of(42, 54)
  .pipe(tap((value) => console.log(value)))
  .subscribe();

When Not To Use It

If you don't require all logic to go in the pipe section of your observables, then you don't need this rule. Also, if your project uses no-ignored-subscribe, which is the opposite of this rule, then you should not use this rule.

Type checked lint rules are more powerful than traditional lint rules, but also require configuring type checked linting.

Related To

• no-ignored-subscribe

Resources

• Rule source
• Test source