console-app/lib/Sources/EnvSource.ts

/* eslint-disable no-process-env */
import { OptionProcess } from '../Option';
import { OptionSource } from './OptionSource';

export class EnvSource extends OptionSource {
  public async parse (options: OptionProcess[]): Promise<void> {
    await Promise.all (options.map ((opt) => {
      if (
        typeof opt.env !== 'undefined'
        && typeof process.env[opt.env] !== 'undefined'
      )
        return this.assign_arg (opt, process.env[opt.env]);
      return Promise.resolve ();
    }));
  }
}