From 2f96dd3c8f2a4a3af9db117dbfd0dbf74547d112 Mon Sep 17 00:00:00 2001
From: fisker Cheung <lionkay@gmail.com>
Date: Mon, 31 May 2021 18:34:27 +0800
Subject: [PATCH] Disallow invalid modifiers

---
 src/language-js/parser-babel.js     | 8 --------
 src/language-js/print/class.js      | 8 --------
 src/language-js/print/typescript.js | 6 ------
 3 files changed, 22 deletions(-)

diff --git a/src/language-js/parser-babel.js b/src/language-js/parser-babel.js
index 2750067b510d..afde66d8e143 100644
--- a/src/language-js/parser-babel.js
+++ b/src/language-js/parser-babel.js
@@ -166,14 +166,6 @@ const allowedMessageCodes = new Set([
   "MixedLabeledAndUnlabeledElements",
   "InvalidTupleMemberLabel",
 
-  "NonClassMethodPropertyHasAbstractModifer",
-  "ReadonlyForMethodSignature",
-  "ClassMethodHasDeclare",
-  "ClassMethodHasReadonly",
-  "InvalidModifierOnTypeMember",
-  "DuplicateAccessibilityModifier",
-  "IndexSignatureHasDeclare",
-
   "DecoratorExportClass",
   "ParamDupe",
   "InvalidDecimal",
diff --git a/src/language-js/print/class.js b/src/language-js/print/class.js
index 61bb7ea055a9..2fdf7ef0e91e 100644
--- a/src/language-js/print/class.js
+++ b/src/language-js/print/class.js
@@ -157,14 +157,6 @@ function printClassMethod(path, options, print) {
   if (node.accessibility) {
     parts.push(node.accessibility + " ");
   }
-  // "readonly" and "declare" are supported by only "babel-ts"
-  // https://github.com/prettier/prettier/issues/9760
-  if (node.readonly) {
-    parts.push("readonly ");
-  }
-  if (node.declare) {
-    parts.push("declare ");
-  }
 
   if (node.static) {
     parts.push("static ");
diff --git a/src/language-js/print/typescript.js b/src/language-js/print/typescript.js
index 7ef36edb31e2..2739866ac713 100644
--- a/src/language-js/print/typescript.js
+++ b/src/language-js/print/typescript.js
@@ -225,7 +225,6 @@ function printTypescript(path, options, print) {
         node.accessibility ? [node.accessibility, " "] : "",
         node.static ? "static " : "",
         node.readonly ? "readonly " : "",
-        node.declare ? "declare " : "",
         "[",
         node.parameters ? parametersGroup : "",
         node.typeAnnotation ? "]: " : "]",
@@ -328,11 +327,6 @@ function printTypescript(path, options, print) {
         kind,
         node.export ? "export " : "",
         node.static ? "static " : "",
-        node.readonly ? "readonly " : "",
-        // "abstract" and "declare" are supported by only "babel-ts"
-        // https://github.com/prettier/prettier/issues/9760
-        node.abstract ? "abstract " : "",
-        node.declare ? "declare " : "",
         node.computed ? "[" : "",
         print("key"),
         node.computed ? "]" : "",