lib: use webidl DOMString converter in EventTarget

lib/internal/event_target.js

@@ -42,6 +42,7 @@ const {
   kEnumerableProperty,
 } = require('internal/util');
 const { inspect } = require('util');
+const webidl = require('internal/webidl');
 
 const kIsEventTarget = SymbolFor('nodejs.event_target');
 const kIsNodeEventTarget = Symbol('kIsNodeEventTarget');
@@ -598,7 +599,7 @@ class EventTarget {
       process.emitWarning(w);
       return;
     }
-    type = String(type);
+    type = webidl.converters.DOMString(type);
 
     if (signal) {
       if (signal.aborted) {
@@ -664,7 +665,7 @@ class EventTarget {
     if (!validateEventListener(listener))
       return;
 
-    type = String(type);
+    type = webidl.converters.DOMString(type);
     const capture = options?.capture === true;
 
     const root = this[kEvents].get(type);

lib/internal/webidl.js

@@ -10,6 +10,7 @@ const {
   NumberIsNaN,
   NumberMAX_SAFE_INTEGER,
   NumberMIN_SAFE_INTEGER,
+  String,
 } = primordials;
 
 const {
@@ -19,6 +20,8 @@ const {
 } = require('internal/errors');
 const { kEmptyObject } = require('internal/util');
 
+const converters = { __proto__: null };
+
 // https://webidl.spec.whatwg.org/#abstract-opdef-integerpart
 const integerPart = MathTrunc;
 
@@ -157,7 +160,22 @@ function convertToInt(name, value, bitLength, options = kEmptyObject) {
   return x;
 }
 
+/**
+ * @see https://webidl.spec.whatwg.org/#es-DOMString
+ * @param {any} V
+ */
+converters.DOMString = function DOMString(V) {
+  // 2.
+  if (typeof V === 'symbol') {
+    throw new ERR_INVALID_ARG_VALUE('value', V);
+  }
+
+  // 3.
+  return String(V);
+};
+
 module.exports = {
   convertToInt,
   evenRound,
+  converters,
 };

test/parallel/test-eventtarget.js

@@ -714,3 +714,15 @@ let asyncTest = Promise.resolve();
     name: 'TypeError',
   });
 }
+
+{
+  const et = new EventTarget();
+
+  throws(() => {
+    et.addEventListener(Symbol('symbol'), () => {});
+  }, TypeError);
+
+  throws(() => {
+    et.removeEventListener(Symbol('symbol'), () => {});
+  }, TypeError);
+}