Preserve #__PURE__ annotations (#347)

Author: Andarist

src/index.js

@@ -594,7 +594,9 @@ function createConfig(options, entry, format, writeMeta) {
 					options.compress !== false && [
 						terser({
 							sourcemap: true,
-							output: { comments: false },
+							output: {
+								comments: (node, comment) => /[@#]__PURE__/.test(comment.value),
+							},
 							compress: Object.assign(
 								{
 									keep_infinity: true,