Method getLocalEnv

packages/cli/src/util/dev/server.ts:568–596

(fileName: string, base?: Env)

  }

  async getLocalEnv(fileName: string, base?: Env): Promise<Env> {
    // TODO: use the file watcher to only invalidate the env `dotfile`
    // once a change to the `fileName` occurs
    const filePath = join(this.cwd, fileName);
    let env: Env = {};
    try {
      const dotenv = await fs.readFile(filePath, 'utf8');
      output.debug(`Using local env: ${filePath}`);
      env = parseDotenv(dotenv);
      env = this.injectSystemValuesInDotenv(env);
    } catch (err: unknown) {
      if (!isErrnoException(err) || err.code !== 'ENOENT') {
        throw err;
      }
    }
    try {
      return {
        ...this.validateEnvConfig(fileName, base || {}, env),
      };
    } catch (err) {
      if (err instanceof MissingDotenvVarsError) {
        output.error(err.message);
        await this.exit();
      } else {
        throw err;
      }
    }
    return {};
  }

  clearVercelConfigPromise = () => {
    this.getVercelConfigPromise = null;