Class PackageJsonProvider

src/targets/node/packageJsonProvider.ts:48–82

@injectable()
export class PackageJsonProvider implements IPackageJsonProvider {
  constructor(
    @inject(IFsUtils) private readonly fs: IFsUtils,
    @inject(AnyLaunchConfiguration) private readonly config: AnyLaunchConfiguration,
  ) {}

  /**
   * Gets the package.json for the debugged program.
   */
  public readonly getPath = once(async () => {
    if (this.config.type !== DebugType.Node || this.config.request !== 'launch') {
      return;
    }

    const dir = await nearestDirectoryContaining(this.fs, this.config.cwd, 'package.json');
    return dir ? join(dir, 'package.json') : undefined;
  });

  /**
   * Gets the package.json contents for the debugged program.
   */
  public readonly getContents = once(async () => {
    const path = await this.getPath();
    if (!path) {
      return;
    }

    try {
      const contents = await this.fs.readFile(path);
      return JSON.parse(contents.toString()) as IPackageJson;
    } catch {
      return;
    }
  });
}