[DevTools] Stop polyfilling Buffer

Author: eps1lon

packages/react-devtools-extensions/webpack.config.js

@@ -119,7 +119,6 @@ module.exports = {
   plugins: [
     new Webpack.ProvidePlugin({
       process: 'process/browser',
-      Buffer: ['buffer', 'Buffer'],
     }),
     new Webpack.DefinePlugin({
       __DEV__,

packages/react-devtools-fusebox/webpack.config.frontend.js

@@ -74,7 +74,6 @@ module.exports = {
     new MiniCssExtractPlugin(),
     new Webpack.ProvidePlugin({
       process: 'process/browser',
-      Buffer: ['buffer', 'Buffer'],
     }),
     new Webpack.DefinePlugin({
       __DEV__,

packages/react-devtools-inline/webpack.config.js

@@ -65,7 +65,6 @@ module.exports = {
   plugins: [
     new Webpack.ProvidePlugin({
       process: 'process/browser',
-      Buffer: ['buffer', 'Buffer'],
     }),
     new Webpack.DefinePlugin({
       __DEV__,

packages/react-devtools-shared/src/hooks/parseHookNames/loadSourceAndMetadata.js

@@ -119,17 +119,7 @@ export async function loadSourceAndMetadata(
 }
 
 function decodeBase64String(encoded: string): Object {
-  if (typeof atob === 'function') {
-    return atob(encoded);
-  } else if (
-    typeof Buffer !== 'undefined' &&
-    Buffer !== null &&
-    typeof Buffer.from === 'function'
-  ) {
-    return Buffer.from(encoded, 'base64');
-  } else {
-    throw Error('Cannot decode base64 string');
-  }
+  return atob(encoded);
 }
 
 function extractAndLoadSourceMapJSON(