Upload package as artifact

Author: cknitt

.github/workflows/ci.yml

@@ -46,11 +46,25 @@ jobs:
       - name: Build
         run: npx rescript
 
+      - name: Pack
+        run: npm pack
+
       - name: Test
         env:
           CI: 1
         shell: bash
         run: |
-          npm pack
           npm i -g ./create-rescript-app-*.tgz
           npx create-rescript-app
+
+      - name: Prepare package upload
+        if: matrix.os == 'ubuntu-latest'
+        # For pull requests, pass the correct commit SHA explicitly as GITHUB_SHA points to the wrong commit.
+        run: node .github/workflows/prepare_package_upload.js ${{ github.event.pull_request.head.sha }}
+
+      - name: "Upload artifact: npm package"
+        if: matrix.os == 'ubuntu-latest'
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ env.artifact_filename }}
+          path: ${{ env.artifact_filename }}

.github/workflows/prepare_package_upload.js

@@ -0,0 +1,17 @@
+const fs = require("fs");
+const os = require("os");
+
+const packageSpec = JSON.parse(fs.readFileSync("./package.json", "utf8"));
+const { version } = packageSpec;
+
+const commitHash = process.argv[2] || process.env.GITHUB_SHA;
+const commitHashShort = commitHash.substring(0, 7);
+const artifactFilename = `create-rescript-app-${version}-${commitHashShort}.tgz`;
+
+fs.renameSync(`create-rescript-app-${version}.tgz`, artifactFilename);
+
+// Pass information to subsequent GitHub actions
+fs.appendFileSync(
+  process.env.GITHUB_ENV,
+  `artifact_filename=${artifactFilename}${os.EOL}`
+);