hunk.code_window:   fn: BuilderHandlerFn<OptT>,
   ): Builder<OptT> {
     const cjh = experimental.jobs.createJobHandler;
     const handler = cjh<json.JsonObject, BuilderInput, BuilderOutput>((options, context) => {
       const scheduler = context.scheduler;
       const progressChannel = context.createChannel('progress');
       const logChannel = context.createChannel('log');
       let currentState: BuilderProgressState = BuilderProgressState.Stopped;
  
hunk.labels: keep keep keep replace keep keep keep keep
hunk.after_edit:   const handler = cjh<json.JsonObject, BuilderInput, OutT>((options, context) => {
  
hunk.file_path: packages/angular_devkit/architect/src/create-builder.ts
hunk.type: replace
file: # Global Library Installation
  
  Some javascript libraries need to be added to the global scope, and loaded as if
  they were in a script tag. We can do this using the `apps[0].scripts` and
  `apps[0].styles` properties of `.angular-cli.json`.
  
  As an example, to use [Bootstrap 4](https://getbootstrap.com/docs/4.0/getting-started/introduction/) this is
  what you need to do:
  
  First install Bootstrap from `npm`:
  
  ```bash
  npm install jquery --save
  npm install popper.js --save
  npm install bootstrap@next --save
  ```
  
  Then add the needed script files to `apps[0].scripts`:
  
  ```json
  "scripts": [
    "../node_modules/jquery/dist/jquery.slim.js",
    "../node_modules/popper.js/dist/umd/popper.js",
    "../node_modules/bootstrap/dist/js/bootstrap.js"
  ],
  ```
  
  Finally add the Bootstrap CSS to the `apps[0].styles` array:
  ```json
  "styles": [
    "../node_modules/bootstrap/dist/css/bootstrap.css",
    "styles.css"
  ],
  ```
  
  Restart `ng serve` if you're running it, and Bootstrap 4 should be working on
  your app.
  