private findProjectReferences()

in src/compiler.ts [444:481]

• 27 lines of code
• 8 McCabe index (conditional complexity)

  private findProjectReferences(): string[] {
    const pkg = this.options.projectInfo.packageJson;

    const ret = new Array<string>();

    const dependencyNames = new Set<string>();
    for (const dependencyMap of [pkg.dependencies, pkg.devDependencies, pkg.peerDependencies]) {
      if (dependencyMap === undefined) {
        continue;
      }
      for (const name of Object.keys(dependencyMap)) {
        dependencyNames.add(name);
      }
    }

    for (const tsconfigFile of Array.from(dependencyNames).map((depName) => this.findMonorepoPeerTsconfig(depName))) {
      if (!tsconfigFile) {
        continue;
      }

      const { config: tsconfig } = ts.readConfigFile(tsconfigFile, this.system.readFile);

      // Add references to any TypeScript package we find that is 'composite' enabled.
      // Make it relative.
      if (tsconfig.compilerOptions?.composite) {
        ret.push(path.relative(this.options.projectInfo.projectRoot, path.dirname(tsconfigFile)));
      } else {
        // Not a composite package--if this package is in a node_modules directory, that is most
        // likely correct, otherwise it is most likely an error (heuristic here, I don't know how to
        // properly check this).
        if (tsconfigFile.includes('node_modules')) {
          LOG.warn('%s: not a composite TypeScript package, but it probably should be', path.dirname(tsconfigFile));
        }
      }
    }

    return ret;
  }