chore(ci): deploy to docs.angularjs.org from within the corresponding directory

Previously, in order to deploy to Firebase from
`scripts/docs.angularjs.org-firebase/`, we had to copy the
`firebase.json` file to the repository root and adjust the contained
paths accordingly.

By running the `firebase` CLI directly (instead of via `yarn`), we are
able to deploy from `docs.angularjs.org-firebase/` directly. This
simplifies the deployment (and local testing) process and paves the way
for also deploying from `code.angularjs.org-firebase/` in a subsequent
commit.

Author: gkalpak

.circleci/config.yml

@@ -385,10 +385,20 @@ jobs:
       - custom_attach_workspace
       - init_environment
       - skip_unless_stable_branch
-        # Install dependencies for Firebase functions to prevent parsing errors during deployment
-        # See https://github.com/angular/angular.js/pull/16453
-      - run: yarn --cwd scripts/docs.angularjs.org-firebase/functions --ignore-engines
-      - run: yarn firebase deploy --message  "Commit:\ $CI_COMMIT" --non-interactive --only hosting --project "docs-angularjs-org-9p2" --token "$FIREBASE_TOKEN"
+        # Install dependencies for Firebase functions to prevent parsing errors during deployment.
+        # See https://github.com/angular/angular.js/pull/16453.
+      - run:
+          name: Install dependencies in `scripts/docs.angularjs.org-firebase/functions/`.
+          working_directory: scripts/docs.angularjs.org-firebase/functions
+          command: yarn install --frozen-lockfile --ignore-engines --non-interactive
+      - run:
+          name: Deploy to Firebase from `scripts/docs.angularjs.org-firebase/`.
+          working_directory: scripts/docs.angularjs.org-firebase
+          command: |
+            # Do not use `yarn firebase` as that causes the Firebase CLI to look for `firebase.json`
+            # in the root directory, even if run from inside `scripts/docs.angularjs.org-firebase/`.
+            firebase=$(yarn bin)/firebase
+            $firebase deploy --message  "Commit:\ $CI_COMMIT" --non-interactive --only hosting --project "docs-angularjs-org-9p2" --token "$FIREBASE_TOKEN"
 
 workflows:
   version: 2

.gitignore

@@ -25,4 +25,3 @@ npm-debug.log
 scripts/code.angularjs.org-firebase/deploy
 scripts/docs.angularjs.org-firebase/deploy
 scripts/docs.angularjs.org-firebase/functions/content
-/firebase.json

Gruntfile.js

@@ -518,7 +518,6 @@ module.exports = function(grunt) {
   ]);
   grunt.registerTask('prepareDeploy', [
     'copy:deployFirebaseCode',
-    'firebaseDocsJsonForCI',
     'copy:deployFirebaseDocs'
   ]);
   grunt.registerTask('default', ['package']);

lib/grunt/utils.js

@@ -7,14 +7,11 @@ var spawn = require('npm-run').spawn;
 
 var CSP_CSS_HEADER = '/* Include this file in your html if you are using the CSP mode. */\n\n';
 
-const codeScriptFolder = 'scripts/code.angularjs.org-firebase';
-const docsScriptFolder = 'scripts/docs.angularjs.org-firebase';
-
 module.exports = {
 
-  codeScriptFolder,
+  codeScriptFolder: 'scripts/code.angularjs.org-firebase',
 
-  docsScriptFolder,
+  docsScriptFolder: 'scripts/docs.angularjs.org-firebase',
 
   startKarma: function(config, singleRun, done) {
     var browsers = grunt.option('browsers');
@@ -306,18 +303,6 @@ module.exports = {
       }
       next();
     };
-  },
-
-  // Our Firebase projects are in subfolders, but the firebase tool expects them in the root,
-  // so we need to modify the upload folder path and copy the file into the root
-  firebaseDocsJsonForCI: function() {
-    var fileName = docsScriptFolder + '/firebase.json';
-    var json = grunt.file.readJSON(fileName);
-
-    (json.hosting || (json.hosting = {})).public = docsScriptFolder + '/deploy';
-    (json.functions || (json.functions = {})).source = docsScriptFolder + '/functions';
-
-    grunt.file.write('firebase.json', JSON.stringify(json));
   }
 
 };

scripts/docs.angularjs.org-firebase/readme.firebase.docs.md

@@ -7,19 +7,20 @@ See `/scripts/code.angularjs.org-firebase/readme.firebase.code.md` for the Fireb
 
 # Continuous integration
 
-The docs are deployed to Google Firebase hosting via a CI deployment config, which expects `firebase.json` to be in the repository root, which is done by a Grunt task (`firebaseDocsJsonForCI` which is included in `prepareDeploy`).
-The `firebaseDocsJsonForCI` task modifies the paths in the `firebase.json` and copies it to the repository root.
+The docs are deployed to Google Firebase hosting and functions automatically via CI.
 
 See `.circleci/config.yml` for the complete deployment config and build steps.
 
 # Serving locally:
 
+- Run `cd scripts/docs.angularjs.org-firebase`.
+  This changes the current working directory.
+
 - Run `yarn grunt package`.
   This builds the files that will be deployed.
 
 - Run `yarn grunt prepareDeploy`.
   This copies docs content files into `./deploy` and the partials for Search Engine AJAX Crawling into `./functions/content`.
-  It also moves the `firebase.json` file to the root folder, where the firebase-cli expects it.
 
-- Run `firebase serve --only functions,hosting`
+- Run `$(yarn bin)/firebase emulators:start` (or `..\..\node_modules\.bin\firebase emulators:start` on Windows).
   Creates a server at http://localhost:5000 that serves from `./deploy` and uses the local function.