Method map

src/common/environmentVars.ts:130–132

* Maps the environment variables. If the mapper function returns undefined, * the value is not included in the resulting set of variables.

(mapper: (key: string, value: string | null) => string | null | undefined)

   * the value is not included in the resulting set of variables.
   */
  public map(mapper: (key: string, value: string | null) => string | null | undefined) {
    return new EnvironmentVars(mapValues(this.value, (v, k) => mapper(k, v)));
  }

  /**
   * Merges the sets of environment variables together.