#209 · Angular Developer Tool

Angular Checker

Check Angular TypeScript and template snippets for decorator mistakes, RxJS cleanup risks, list tracking, version compatibility, and maintainability issues.

Developer Input

Framework source

Angular source code

@Component({
  selector: 'app-users',
  template: '<div *ngFor="let user of users">{{ user.name }}</div>'
})
export class UsersComponent {
  load() { this.service.get().subscribe(value => this.users = value); }
}

Angular version

File type

Trim whitespace Show suggestions Strict checks Auto-run while typing

How to use this developer tool

Paste Angular TypeScript or template code.
Select the target Angular version.
Run the checker.
Review RxJS, compatibility, and performance findings.

What this developer tool does

Uses static browser-side rules for components, RxJS subscriptions, control flow, change detection, and TypeScript patterns.

Detect artifact → evaluate Angular/RxJS rules → attach line numbers → score result

Compile the full Angular project after applying recommendations because cross-file bindings are not available here.

Example

Use the preloaded sample, run the tool, then inspect the output and status before copying it into a project.

Tips for better output

Use complete framework code when possible.
Select the matching framework version.
Review heuristic findings before changing production code.
Run the project compiler and tests after using generated or transformed output.

FAQ

How do I check an Angular component for errors online?

Paste Angular TypeScript, select the version, and run the static checker.

Can it detect RxJS subscription leaks?

It warns when subscribe calls appear without common cleanup strategies.

How do I check Angular standalone component compatibility?

Select the target Angular version and review compatibility findings for newer APIs.

Can it check Angular list tracking?

Yes. It detects common ngFor or @for patterns that lack trackBy or track.

Does this replace the Angular compiler?

No. Cross-file templates and types still require a full project build.

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Analysis modules

Module	Purpose
Angular	Decorators and versions
RxJS	Cleanup and nested subscriptions
Performance	Tracking and OnPush

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