[build] Always transpile everything (#4548)

package.json

@@ -60,9 +60,9 @@
     "unified": "6.1.6"
   },
   "devDependencies": {
-    "@babel/cli": "7.0.0-beta.40",
-    "@babel/core": "7.0.0-beta.40",
-    "@babel/preset-env": "7.0.0-beta.40",
+    "@babel/cli": "7.0.0-beta.48",
+    "@babel/core": "7.0.0-beta.48",
+    "@babel/preset-env": "7.0.0-beta.48",
     "builtin-modules": "2.0.0",
     "codecov": "2.2.0",
     "cross-env": "5.0.5",

scripts/build/build.js

@@ -36,10 +36,6 @@ const EXTERNALS = [
 ];
 
 function getBabelConfig(bundle) {
-  if (bundle.type !== "core" && !bundle.transpile) {
-    return;
-  }
-
   const config = {
     babelrc: false,
     plugins: []
@@ -49,16 +45,14 @@ function getBabelConfig(bundle) {
       require.resolve("./babel-plugins/transform-custom-require")
     );
   }
-  if (bundle.transpile) {
-    const targets = { node: 4 };
-    if (bundle.target === "universal") {
-      // From https://jamie.build/last-2-versions
-      targets.browsers = [">0.25%", "not ie 11", "not op_mini all"];
-    }
-    config.presets = [
-      [require.resolve("@babel/preset-env"), { targets, modules: false }]
-    ];
+  const targets = { node: 4 };
+  if (bundle.target === "universal") {
+    // From https://jamie.build/last-2-versions
+    targets.browsers = [">0.25%", "not ie 11", "not op_mini all"];
   }
+  config.presets = [
+    [require.resolve("@babel/preset-env"), { targets, modules: false }]
+  ];
   return config;
 }
 

scripts/build/bundles.js

@@ -13,7 +13,6 @@ const path = require("path");
  * @property {CommonJSConfig} [commonjs={}] - options for `rollup-plugin-commonjs`
  * @property {string[]} external - array of paths that should not be included in the final bundle
  * @property {Object.<string, string>} replace - map of strings to replace when processing the bundle
- * @property {boolean} [transpile=false] - wether to transpile the bundle to ES2015
 
  * @typedef {Object} CommonJSConfig
  * @property {Object} namedExports - for cases where rollup can't infer what's exported
@@ -62,8 +61,7 @@ const parsers = [
         "node_modules/@glimmer/syntax/dist/modules/es2017/index.js": "default"
       },
       ignore: ["source-map"]
-    },
-    transpile: true
+    }
   },
   {
     input: "src/language-html/parser-parse5.js",