remove double validation in webidl (#3516)

* webidl don't double validate

* remove unused converters

* remove BufferSource

Author: KhafraDev

lib/web/fetch/request.js

@@ -916,18 +916,14 @@ Object.defineProperties(Request.prototype, {
   }
 })
 
-webidl.converters.Request = webidl.interfaceConverter(
-  Request
-)
-
 // https://fetch.spec.whatwg.org/#requestinfo
 webidl.converters.RequestInfo = function (V, prefix, argument) {
   if (typeof V === 'string') {
     return webidl.converters.USVString(V)
   }
 
   if (V instanceof Request) {
-    return webidl.converters.Request(V, prefix, argument)
+    return V
   }
 
   return webidl.converters.USVString(V)

lib/web/fetch/response.js

@@ -522,38 +522,26 @@ function fromInnerResponse (innerResponse, guard) {
   return response
 }
 
-webidl.converters.ReadableStream = webidl.interfaceConverter(
-  ReadableStream
-)
-
-webidl.converters.FormData = webidl.interfaceConverter(
-  FormData
-)
-
-webidl.converters.URLSearchParams = webidl.interfaceConverter(
-  URLSearchParams
-)
-
 // https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit
 webidl.converters.XMLHttpRequestBodyInit = function (V, prefix, name) {
   if (typeof V === 'string') {
     return webidl.converters.USVString(V, prefix, name)
   }
 
   if (V instanceof Blob) {
-    return webidl.converters.Blob(V, prefix, name)
+    return V
   }
 
   if (ArrayBuffer.isView(V) || types.isArrayBuffer(V)) {
-    return webidl.converters.BufferSource(V, prefix, name)
+    return V
   }
 
   if (V instanceof FormData) {
-    return webidl.converters.FormData(V, prefix, name)
+    return V
   }
 
   if (V instanceof URLSearchParams) {
-    return webidl.converters.URLSearchParams(V, prefix, name)
+    return V
   }
 
   return webidl.converters.DOMString(V, prefix, name)
@@ -562,7 +550,7 @@ webidl.converters.XMLHttpRequestBodyInit = function (V, prefix, name) {
 // https://fetch.spec.whatwg.org/#bodyinit
 webidl.converters.BodyInit = function (V, prefix, argument) {
   if (V instanceof ReadableStream) {
-    return webidl.converters.ReadableStream(V, prefix, argument)
+    return V
   }
 
   // Note: the spec doesn't include async iterables,

lib/web/fetch/webidl.js

@@ -654,27 +654,6 @@ webidl.converters.DataView = function (V, prefix, name, opts) {
   return V
 }
 
-// https://webidl.spec.whatwg.org/#BufferSource
-webidl.converters.BufferSource = function (V, prefix, name, opts) {
-  if (types.isAnyArrayBuffer(V)) {
-    return webidl.converters.ArrayBuffer(V, prefix, name, { ...opts, allowShared: false })
-  }
-
-  if (types.isTypedArray(V)) {
-    return webidl.converters.TypedArray(V, V.constructor, prefix, name, { ...opts, allowShared: false })
-  }
-
-  if (types.isDataView(V)) {
-    return webidl.converters.DataView(V, prefix, name, { ...opts, allowShared: false })
-  }
-
-  throw webidl.errors.conversionFailed({
-    prefix,
-    argument: `${name} ("${webidl.util.Stringify(V)}")`,
-    types: ['BufferSource']
-  })
-}
-
 webidl.converters['sequence<ByteString>'] = webidl.sequenceConverter(
   webidl.converters.ByteString
 )

lib/web/websocket/websocket.js

@@ -794,11 +794,11 @@ webidl.converters['DOMString or sequence<DOMString> or WebSocketInit'] = functio
 webidl.converters.WebSocketSendData = function (V) {
   if (webidl.util.Type(V) === 'Object') {
     if (V instanceof Blob) {
-      return webidl.converters.Blob(V)
+      return V
     }
 
     if (ArrayBuffer.isView(V) || types.isArrayBuffer(V)) {
-      return webidl.converters.BufferSource(V)
+      return V
     }
   }
 

test/webidl/converters.js

@@ -156,19 +156,6 @@ test('DataView', () => {
   assert.equal(webidl.converters.DataView(view, 'converter', 'converter'), view)
 })
 
-test('BufferSource', () => {
-  assert.doesNotThrow(() => {
-    const buffer = new ArrayBuffer(16)
-    const view = new DataView(buffer, 0)
-
-    webidl.converters.BufferSource(view, 'converter', 'converter')
-  })
-
-  assert.throws(() => {
-    webidl.converters.BufferSource(3, 'converter', 'converter')
-  }, TypeError)
-})
-
 test('ByteString', () => {
   assert.doesNotThrow(() => {
     webidl.converters.ByteString('', 'converter', 'converter')