From 55239e01cc474ee3a70a55c117bb6aa35baf12d1 Mon Sep 17 00:00:00 2001
From: Jacob Hilker <jhilker@hubspot.com>
Date: Thu, 27 May 2021 18:48:28 -0400
Subject: [PATCH 1/2] Worker: Babel ignore node_modules by deafult; minor babel
 transform perf improvements

---
 src/Worker.js | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/src/Worker.js b/src/Worker.js
index 0f4f36b1..051c7052 100644
--- a/src/Worker.js
+++ b/src/Worker.js
@@ -52,6 +52,8 @@ function prepareJscodeshift(options) {
 }
 
 function setup(tr, babel) {
+  let babelRegister;
+
   if (babel === 'babel') {
     const presets = [];
     if (presetEnv) {
@@ -66,19 +68,24 @@ function setup(tr, babel) {
         require('@babel/preset-flow').default
     );
 
-    require('@babel/register')({
+    const plugins = [
+      require('@babel/plugin-proposal-class-properties').default,
+      require('@babel/plugin-proposal-nullish-coalescing-operator').default,
+      require('@babel/plugin-proposal-optional-chaining').default,
+      require('@babel/plugin-transform-modules-commonjs').default,
+    ];
+
+    babelRegister = require('@babel/register');
+
+    babelRegister({
       babelrc: false,
       presets,
-      plugins: [
-        require('@babel/plugin-proposal-class-properties').default,
-        require('@babel/plugin-proposal-nullish-coalescing-operator').default,
-        require('@babel/plugin-proposal-optional-chaining').default,
-        require('@babel/plugin-transform-modules-commonjs').default,
-      ],
+      plugins,
       extensions: [...DEFAULT_EXTENSIONS, '.ts', '.tsx'],
       // By default, babel register only compiles things inside the current working directory.
       // https://github.com/babel/babel/blob/2a4f16236656178e84b05b8915aab9261c55782c/packages/babel-register/src/node.js#L140-L157
       ignore: [
+        /\/node_modules\//,
         // Ignore parser related files
         /@babel\/parser/,
         /\/flow-parser\//,
@@ -89,6 +96,11 @@ function setup(tr, babel) {
   }
 
   const module = require(tr);
+
+  if (babelRegister) {
+    babelRegister.revert();
+  }
+
   transform = typeof module.default === 'function' ?
     module.default :
     module;

From 0764677cefb3f34598fe2fa4478daabb95657258 Mon Sep 17 00:00:00 2001
From: Jacob Hilker <jhilker@hubspot.com>
Date: Fri, 28 May 2021 13:05:14 -0400
Subject: [PATCH 2/2] Worker: Remove babel/register revert call for dynamic
 require support

---
 src/Worker.js | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/src/Worker.js b/src/Worker.js
index 051c7052..36ba414b 100644
--- a/src/Worker.js
+++ b/src/Worker.js
@@ -52,8 +52,6 @@ function prepareJscodeshift(options) {
 }
 
 function setup(tr, babel) {
-  let babelRegister;
-
   if (babel === 'babel') {
     const presets = [];
     if (presetEnv) {
@@ -75,9 +73,7 @@ function setup(tr, babel) {
       require('@babel/plugin-transform-modules-commonjs').default,
     ];
 
-    babelRegister = require('@babel/register');
-
-    babelRegister({
+    require('@babel/register')({
       babelrc: false,
       presets,
       plugins,
@@ -96,11 +92,6 @@ function setup(tr, babel) {
   }
 
   const module = require(tr);
-
-  if (babelRegister) {
-    babelRegister.revert();
-  }
-
   transform = typeof module.default === 'function' ?
     module.default :
     module;