Method apply

packages/schematics/angular/utility/change.ts:65–72

* This method does not insert spaces if there is none in the original string.

(host: Host)

   * This method does not insert spaces if there is none in the original string.
   */
  apply(host: Host): Promise<void> {
    return host.read(this.path).then((content) => {
      const prefix = content.substring(0, this.pos);
      const suffix = content.substring(this.pos);

      return host.write(this.path, `${prefix}${this.toAdd}${suffix}`);
    });
  }
}

/**