Publish prereleases

Fixes #1155

Signed-off-by: David Thompson <davthomp@redhat.com>

Author: datho7561

.github/workflows/release.yml

@@ -1,6 +1,8 @@
 name: release
 
 on:
+  schedule:
+    - cron: '0 8 * * *'
   workflow_dispatch:
     inputs:
       publishPreRelease:
@@ -39,10 +41,19 @@ jobs:
         with:
           path: release
           node-version: 20
+      - name: Set version to prerelease version
+        run: |
+          node change-version-to-prerelease.mjs
+          echo "publishPreReleaseFlag=--pre-release" >> $GITHUB_ENV
+        if: ${{ github.event_name == 'schedule' || inputs.publishPreRelease == 'true'}}
       - name: Install dependencies
         run: |
           npm install -g typescript "@vscode/vsce" "ovsx"
           echo "EXT_VERSION=$(cat package.json | jq -r .version)" >> $GITHUB_ENV
+      # Install latest yaml-language-server in the case of a prerelease
+      - name: Update yaml-language-server
+        if: ${{ github.event_name == 'schedule' || inputs.publishPreRelease == 'true'}}
+        run: npm i yaml-language-server@next
       - name: Build vscode-yaml
         uses: coactions/setup-xvfb@b6b4fcfb9f5a895edadc3bc76318fae0ac17c8b3 #v1.0.1
         with:
@@ -56,7 +67,7 @@ jobs:
           run: npm test --silent
       - name: Package
         run: |
-          vsce package -o vscode-yaml-${{ env.EXT_VERSION }}-${GITHUB_RUN_NUMBER}.vsix
+          vsce package ${{ env.publishPreReleaseFlag }} -o vscode-yaml-${{ env.EXT_VERSION }}-${GITHUB_RUN_NUMBER}.vsix
           sha256sum *.vsix > vscode-yaml-${{ env.EXT_VERSION }}-${GITHUB_RUN_NUMBER}.vsix.sha256
           ls -lash *.vsix *.sha256
       - name: Upload VSIX Artifacts

scripts/change-version-to-prerelease.mjs

@@ -0,0 +1,22 @@
+import * as fs from 'fs/promises';
+
+function prependZero(number) {
+  if (number > 99) {
+    throw 'Unexpected value to prepend with zero';
+  }
+  return `${number < 10 ? '0' : ''}${number}`;
+}
+
+const json = JSON.parse((await fs.readFile('./package.json')).toString());
+const stableVersion = json.version.match(/(\d+)\.(\d+)\.(\d+)/);
+const major = stableVersion[1];
+const minor = stableVersion[2];
+const date = new Date();
+const month = date.getMonth() + 1;
+const day = date.getDate();
+const hours = date.getHours();
+const patch = `${date.getFullYear()}${prependZero(month)}${prependZero(day)}${prependZero(hours)}`;
+const insiderPackageJson = Object.assign(json, {
+  version: `${major}.${minor}.${patch}`,
+});
+await fs.writeFile('./package.json', JSON.stringify(insiderPackageJson, null, 2));