diff --git a/build/gulpfile.compile.js b/build/gulpfile.compile.js
index 1424c90e3d0..c4947e76cbf 100644
--- a/build/gulpfile.compile.js
+++ b/build/gulpfile.compile.js
@@ -11,15 +11,22 @@ const task = require('./lib/task');
 const compilation = require('./lib/compilation');
 const optimize = require('./lib/optimize');
 
-// Full compile, including nls and inline sources in sourcemaps, for build
-const compileBuildTask = task.define('compile-build',
-	task.series(
+function makeCompileBuildTask(disableMangle) {
+	return task.series(
 		util.rimraf('out-build'),
 		util.buildWebNodePaths('out-build'),
 		compilation.compileApiProposalNamesTask,
-		compilation.compileTask('src', 'out-build', true),
+		compilation.compileTask('src', 'out-build', true, { disableMangle }),
 		optimize.optimizeLoaderTask('out-build', 'out-build', true)
-	)
-);
+	);
+}
+
+// Full compile, including nls and inline sources in sourcemaps, mangling, minification, for build
+const compileBuildTask = task.define('compile-build', makeCompileBuildTask(false));
 gulp.task(compileBuildTask);
 exports.compileBuildTask = compileBuildTask;
+
+// Full compile for PR ci, e.g no mangling
+const compileBuildTaskPullRequest = task.define('compile-build-pr', makeCompileBuildTask(true));
+gulp.task(compileBuildTaskPullRequest);
+exports.compileBuildTaskPullRequest = compileBuildTaskPullRequest;
diff --git a/build/gulpfile.vscode.js b/build/gulpfile.vscode.js
index 0ca2cfd60a9..aa0cf4da7eb 100644
--- a/build/gulpfile.vscode.js
+++ b/build/gulpfile.vscode.js
@@ -150,6 +150,16 @@ const core = task.define('core-ci', task.series(
 ));
 gulp.task(core);
 
+const corePr = task.define('core-ci-pr', task.series(
+	gulp.task('compile-build-pr'),
+	task.parallel(
+		gulp.task('minify-vscode'),
+		gulp.task('minify-vscode-reh'),
+		gulp.task('minify-vscode-reh-web'),
+	)
+));
+gulp.task(corePr);
+
 /**
  * Compute checksums for some files.
  *
diff --git a/package.json b/package.json
index 429c22c8770..f2f0139f7d8 100644
--- a/package.json
+++ b/package.json
@@ -57,6 +57,7 @@
     "minify-vscode-reh-web": "node --max_old_space_size=4095 ./node_modules/gulp/bin/gulp.js minify-vscode-reh-web",
     "hygiene": "node --max_old_space_size=4095 ./node_modules/gulp/bin/gulp.js hygiene",
     "core-ci": "node --max_old_space_size=8095 ./node_modules/gulp/bin/gulp.js core-ci",
+    "core-ci-pr": "node --max_old_space_size=4095 ./node_modules/gulp/bin/gulp.js core-ci-pr",
     "extensions-ci": "node --max_old_space_size=4095 ./node_modules/gulp/bin/gulp.js extensions-ci",
     "perf": "node scripts/code-perf.js"
   },