ci: fix build failure on doc only changes (#22075)

* ci: fix build failure on doc only changes

* ci: fix doc-only check when CI fires on branch before PR is created

.circleci/config.yml

@@ -848,7 +848,7 @@ step-check-for-doc-only-change: &step-check-for-doc-only-change
     command: |
       cd src/electron
       node script/yarn install --frozen-lockfile
-      if node script/doc-only-change.js --prNumber=$CIRCLE_PR_NUMBER --prURL=$CIRCLE_PULL_REQUEST; then
+      if node script/doc-only-change.js --prNumber=$CIRCLE_PR_NUMBER --prURL=$CIRCLE_PULL_REQUEST --prBranch=$CIRCLE_BRANCH; then
         #PR is doc only change; save file with value true to indicate doc only change
         echo "true" > .skip-ci-build
       else
@@ -884,7 +884,7 @@ step-ts-compile: &step-ts-compile
     command: |
       cd src
       ninja -C out/Default electron:default_app_js -j $NUMBER_OF_NINJA_PROCESSES
-      ninja -C out/Default electron:atom_js2c -j $NUMBER_OF_NINJA_PROCESSES
+      ninja -C out/Default electron:electron_js2c -j $NUMBER_OF_NINJA_PROCESSES
 
 # Lists of steps.
 steps-lint: &steps-lint

script/doc-only-change.js

@@ -9,7 +9,11 @@ async function checkIfDocOnlyChange () {
     try {
       let pullRequestNumber = args.prNumber
       if (!pullRequestNumber || isNaN(pullRequestNumber)) {
-        if (args.prBranch) {
+        if (args.prURL) {
+          // CircleCI doesn't provide the PR number for branch builds, but it does provide the PR URL
+          const pullRequestParts = args.prURL.split('/')
+          pullRequestNumber = pullRequestParts[pullRequestParts.length - 1]
+        } else if (args.prBranch) {
           // AppVeyor doesn't provide a PR number for branch builds - figure it out from the branch
           const prsForBranch = await octokit.pulls.list({
             owner: 'electron',
@@ -23,10 +27,6 @@ async function checkIfDocOnlyChange () {
             // If there are 0 PRs or more than one PR on a branch, just assume that this is more than a doc change
             process.exit(1)
           }
-        } else if (args.prURL) {
-          // CircleCI doesn't provide the PR number for branch builds, but it does provide the PR URL
-          const pullRequestParts = args.prURL.split('/')
-          pullRequestNumber = pullRequestParts[pullRequestParts.length - 1]
         }
       }
       const filesChanged = await octokit.pulls.listFiles({