Upgrade Babel to self-host with beta.46 (#7784)

packages/babel-plugin-transform-modules-commonjs/test/copied-nodes.js

@@ -4,6 +4,7 @@ test("Doesn't use the same object for two different nodes in the AST", function(
   const code = 'import Foo from "bar"; Foo; Foo;';
 
   const ast = babel.transform(code, {
+    cwd: __dirname,
     ast: true,
     plugins: [[require("../"), { loose: true }]],
   }).ast;

packages/babel-plugin-transform-modules-commonjs/test/esmodule-flag.js

@@ -19,6 +19,7 @@ test("Re-export doesn't overwrite __esModule flag", function() {
   context.exports = context.module.exports;
 
   code = babel.transform(code, {
+    cwd: __dirname,
     plugins: [[require("../"), { loose: true }]],
     ast: false,
   }).code;