Flow and insertPragma

fisker · Nov 2, 2020 · e338ff4 · e338ff4
1 parent dba72f4
commit e338ff4
Showing 1 changed file with 14 additions and 2 deletions.
diff --git a/src/language-js/clean.js b/src/language-js/clean.js
@@ -23,8 +23,20 @@ function clean(ast, newObj, parent) {
   if (ast.type === "Line" || ast.type === "CommentLine") {
     newObj.value = newObj.value.trimEnd();
   }
-  if ( ast.type === "Block" || ast.type === "CommentBlock") {
-    newObj.value = newObj.value.split("\n").map(line => line.trim()).join("\n");
+  if (ast.type === "Block" || ast.type === "CommentBlock") {
+    const comment = newObj.value.trim();
+    if (comment === "* @format") {
+      return null;
+      // Flow comment
+    } else if (comment.startsWith("::") || comment === "* @format") {
+      newObj.value = "";
+    } else {
+      const lines = comment
+        .split("\n")
+        .map((line) => line.trim())
+        .filter((line) => line === "* @format");
+      newObj.value = lines.join("\n");
+    }
   }
 
   if (