fix: add file extention when the absolute path to the runtime files a…

…re used (#12824)

the es module imports need the file extention (e.g. import "@babel/runtime/helpers/jsx.js", Or the filenames being listed in the package.json's subpath exports (e.g. "import "@babel/runtime/helpers/jsx" + pkg: "./helpers/jsx": "./helpers/jsx.js"). when the user passes a path via `absoluteRuntime` then the rendered require staemnts is not the module name + subpath which will be resolved via pkg.json but rather the absolute path to the file. for this case, add the file extention / index.js to prevent bundlers from raising a warning.

packages/babel-plugin-transform-runtime/src/index.js

@@ -233,7 +233,7 @@ export default declare((api, options, dirname) => {
             : "helpers";
 
         return addDefaultImport(
-          `${modulePath}/${helpersDir}/${name}`,
+          `${modulePath}/${helpersDir}/${name}${absoluteRuntime ? ".js" : ""}`,
           name,
           blockHoist,
           true,

packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/relative/output.js

@@ -1,4 +1,4 @@
-var _classCallCheck = require("<CWD>/packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/relative/subfolder/node_modules/@babel/runtime/helpers/classCallCheck");
+var _classCallCheck = require("<CWD>/packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/relative/subfolder/node_modules/@babel/runtime/helpers/classCallCheck.js");
 
 let Foo = function Foo() {
   "use strict";

packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/true-corejs3-proposals/output.js

@@ -1,4 +1,4 @@
-var _regeneratorRuntime = require("<CWD>/packages/babel-runtime-corejs3/regenerator");
+var _regeneratorRuntime = require("<CWD>/packages/babel-runtime-corejs3/regenerator/index.js");
 
 var _mapInstanceProperty = require("<CWD>/packages/babel-runtime-corejs3/core-js/instance/map.js");
 

packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/true-corejs3-stable/output.js

@@ -1,4 +1,4 @@
-var _regeneratorRuntime = require("<CWD>/packages/babel-runtime-corejs3/regenerator");
+var _regeneratorRuntime = require("<CWD>/packages/babel-runtime-corejs3/regenerator/index.js");
 
 var _mapInstanceProperty = require("<CWD>/packages/babel-runtime-corejs3/core-js-stable/instance/map.js");
 

packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/true-use-es-modules/input.js

@@ -0,0 +1 @@
+class Foo {}

packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/true-use-es-modules/options.json

@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    "transform-classes",
+    ["transform-runtime", { "absoluteRuntime": true, "useESModules": true }]
+  ]
+}

packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/true-use-es-modules/output.js

@@ -0,0 +1,7 @@
+var _classCallCheck = require("<CWD>/packages/babel-runtime/helpers/classCallCheck.js");
+
+let Foo = function Foo() {
+  "use strict";
+
+  _classCallCheck(this, Foo);
+};

packages/babel-plugin-transform-runtime/test/fixtures/absoluteRuntime/true/output.js

@@ -1,4 +1,4 @@
-var _classCallCheck = require("<CWD>/packages/babel-runtime/helpers/classCallCheck");
+var _classCallCheck = require("<CWD>/packages/babel-runtime/helpers/classCallCheck.js");
 
 let Foo = function Foo() {
   "use strict";

packages/babel-plugin-transform-runtime/test/fixtures/windows/absoluteRuntime/output.js

@@ -1,4 +1,4 @@
-var _asyncToGenerator = require("<CWD>/packages/babel-runtime/helpers/asyncToGenerator");
+var _asyncToGenerator = require("<CWD>/packages/babel-runtime/helpers/asyncToGenerator.js");
 
 function test() {
   return _test.apply(this, arguments);