Bitwarden Clients - Claude Code Configuration

Project Context Files

Read these files before reviewing to ensure that you fully understand the project and contributing guidelines

@README.md
@CONTRIBUTING.md
@.github/PULL_REQUEST_TEMPLATE.md

Critical Rules

NEVER use code regions: If complexity suggests regions, refactor for better readability
CRITICAL: new encryption logic should not be added to this repo.
NEVER send unencrypted vault data to API services
NEVER commit secrets, credentials, or sensitive information.
NEVER log decrypted data, encryption keys, or PII
- No vault data in error messages or console logs
ALWAYS Respect configuration files at the root and within each app/library (e.g., eslint.config.mjs, jest.config.js, tsconfig.json).

Mono-Repo Architecture

This repository is organized as a monorepo containing multiple applications and libraries. The main directories are:

apps/ – Contains all application projects (e.g., browser, cli, desktop, web). Each app is self-contained with its own configuration, source code, and tests.
libs/ – Contains shared libraries and modules used across multiple apps. Libraries are organized by team name, domain, functionality (e.g., common, ui, platform, key-management).

Strict boundaries must be maintained between apps and libraries. Do not introduce cross-dependencies that violate the intended modular structure. Always consult and respect the dependency rules defined in eslint.config.mjs, nx.json, and other configuration files.

Angular Architecture Patterns

Observable Data Services (ADR-0003):

Services expose RxJS Observable streams for state management
Components subscribe using async pipe (NOT explicit subscriptions in most cases) Pattern:

// Service
private _folders = new BehaviorSubject<Folder[]>([]);
readonly folders$ = this._folders.asObservable();

// Component
folders$ = this.folderService.folders$;
// Template: <div *ngFor="let folder of folders$ | async">

For explicit subscriptions, MUST use takeUntilDestroyed():

constructor() {
  this.observable$.pipe(takeUntilDestroyed()).subscribe(...);
}

Angular Signals (ADR-0027):

Encourage the use of Signals only in Angular components and presentational services.

Use RxJS for:

Services used across Angular and non-Angular clients
Complex reactive workflows
Interop with existing Observable-based code

NO TypeScript Enums (ADR-0025):

Use const objects with type aliases instead
Legacy enums exist but don't add new ones

Pattern:

// ✅ DO
export const CipherType = Object.freeze({
  Login: 1,
  SecureNote: 2,
} as const);
export type CipherType = (typeof CipherType)[keyof typeof CipherType];

// ❌ DON'T
enum CipherType {
  Login = 1,
  SecureNote = 2,
}

Example: /libs/common/src/vault/enums/cipher-type.ts

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Bitwarden Clients - Claude Code Configuration

Project Context Files

Critical Rules

Mono-Repo Architecture

Angular Architecture Patterns

References

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