tools: add semver-major release support to release-lint

Co-authored-by: RafaelGSS <rafael.nunu@hotmail.com>
Co-authored-by: Antoine du Hamel <duhamelantoine1995@gmail.com>
PR-URL: #57892
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>

Author: aduh95

tools/actions/lint-release-proposal-commit-list.mjs

@@ -19,14 +19,24 @@ const stdinLineByLine = createInterface(process.stdin)[Symbol.asyncIterator]();
 
 constchangelog=awaitreadFile(CHANGELOG_PATH,'utf-8');
 constcommitListingStart=changelog.indexOf('\n### Commits\n');
-constcommitListingEnd=changelog.indexOf('\n\n<a',commitListingStart);
-constcommitList=changelog.slice(commitListingStart,commitListingEnd===-1 ? undefined : commitListingEnd+1)
-// Checking for semverness is too expansive, it is left as a exercice for human reviewers.
+letcommitList;
+if(commitListingStart===-1){
+// We're preparing a semver-major release.
+commitList=changelog.replace(/(^.+\n###Semver-Major|\n###Semver-(Minor|Patch))Commits\n/gs,'')
+.replaceAll('**(SEMVER-MAJOR)** ','');
+}else{
+constcommitListingEnd=changelog.indexOf('\n\n<a',commitListingStart);
+assert.notStrictEqual(commitListingEnd,-1);
+commitList=changelog.slice(commitListingStart,commitListingEnd+1);
+}
+
+// Normalize for consistent comparison
+commitList=commitList
 .replaceAll('**(SEMVER-MINOR)** ','')
-// Correct Markdown escaping is validated by the linter, getting rid of it here helps.
 .replaceAll('\\','');
 
-letexpectedNumberOfCommitsLeft=commitList.match(/\n\*\[/g).length;
+letexpectedNumberOfCommitsLeft=commitList.match(/\n\*\[/g)?.length??0;
+
 forawait(constlineofstdinLineByLine){
 const{ smallSha, title, prURL }=JSON.parse(line);