Make module types explicit and convert some to ESM (#15964)

build-scripts/gulp/compress.cjs

@@ -0,0 +1,45 @@
+// Tasks to compress
+
+const gulp = require("gulp");
+const zopfli = require("gulp-zopfli-green");
+const merge = require("merge-stream");
+const path = require("path");
+const paths = require("../paths.cjs");
+
+const zopfliOptions = { threshold: 150 };
+
+gulp.task("compress-app", function compressApp() {
+  const jsLatest = gulp
+    .src(path.resolve(paths.app_output_latest, "**/*.js"))
+    .pipe(zopfli(zopfliOptions))
+    .pipe(gulp.dest(paths.app_output_latest));
+
+  const jsEs5 = gulp
+    .src(path.resolve(paths.app_output_es5, "**/*.js"))
+    .pipe(zopfli(zopfliOptions))
+    .pipe(gulp.dest(paths.app_output_es5));
+
+  const polyfills = gulp
+    .src(path.resolve(paths.app_output_static, "polyfills/*.js"))
+    .pipe(zopfli(zopfliOptions))
+    .pipe(gulp.dest(path.resolve(paths.app_output_static, "polyfills")));
+
+  const translations = gulp
+    .src(path.resolve(paths.app_output_static, "translations/**/*.json"))
+    .pipe(zopfli(zopfliOptions))
+    .pipe(gulp.dest(path.resolve(paths.app_output_static, "translations")));
+
+  const icons = gulp
+    .src(path.resolve(paths.app_output_static, "mdi/*.json"))
+    .pipe(zopfli(zopfliOptions))
+    .pipe(gulp.dest(path.resolve(paths.app_output_static, "mdi")));
+
+  return merge(jsLatest, jsEs5, polyfills, translations, icons);
+});
+
+gulp.task("compress-hassio", function compressApp() {
+  return gulp
+    .src(path.resolve(paths.hassio_output_root, "**/*.js"))
+    .pipe(zopfli(zopfliOptions))
+    .pipe(gulp.dest(paths.hassio_output_root));
+});