babel-runtime support for evaluation in worker

Author: CompuIves

packages/app/src/sandbox/eval/transpilers/babel/worker/evaluate.js

@@ -4,6 +4,7 @@ import type FSType from 'fs';
 import evaluateCode from '../../../loaders/eval';
 
 let cache = {};
+let transpileBeforeExec = false;
 
 export const resetCache = () => {
   cache = {};
@@ -22,6 +23,11 @@ export default function evaluate(
       return () => {};
     }
 
+    if (requirePath === 'babel-register') {
+      transpileBeforeExec = true;
+      return () => {};
+    }
+
     if (requirePath === 'require-from-string') {
       return (newCode: string) =>
         evaluate(
@@ -62,7 +68,7 @@ export default function evaluate(
       moduleDirectory: ['node_modules'],
     });
 
-    const resolvedCode = fs.readFileSync(resolvedPath).toString();
+    let resolvedCode = fs.readFileSync(resolvedPath).toString();
     const id = hashsum(resolvedCode + resolvedPath);
 
     if (cache[id]) {
@@ -71,6 +77,12 @@ export default function evaluate(
 
     cache[id] = {};
 
+    if (transpileBeforeExec) {
+      const { code: transpiledCode } = Babel.transform(resolvedCode);
+
+      resolvedCode = transpiledCode;
+    }
+
     cache[id] = evaluate(
       fs,
       BFSRequire,