Merge env-standalone to babel-standalone (#10821)

* feat: add babel-preset-env to babel-standalone

* chore: copy preset-env-standalone test

* polish: tune warning message when babel-preset-env-standalone is loaded

packages/babel-standalone/package.json

@@ -18,6 +18,7 @@
     "@babel/plugin-proposal-class-properties": "^7.7.4",
     "@babel/plugin-proposal-decorators": "^7.7.4",
     "@babel/plugin-proposal-do-expressions": "^7.7.4",
+    "@babel/plugin-proposal-dynamic-import": "^7.7.4",
     "@babel/plugin-proposal-export-default-from": "^7.7.4",
     "@babel/plugin-proposal-export-namespace-from": "^7.7.4",
     "@babel/plugin-proposal-function-bind": "^7.7.4",
@@ -48,6 +49,7 @@
     "@babel/plugin-syntax-object-rest-spread": "^7.7.4",
     "@babel/plugin-syntax-optional-catch-binding": "^7.7.4",
     "@babel/plugin-syntax-pipeline-operator": "^7.7.7",
+    "@babel/plugin-syntax-top-level-await": "^7.7.4",
     "@babel/plugin-syntax-typescript": "^7.7.4",
     "@babel/plugin-transform-arrow-functions": "^7.7.4",
     "@babel/plugin-transform-async-to-generator": "^7.7.4",
@@ -71,6 +73,7 @@
     "@babel/plugin-transform-modules-commonjs": "^7.7.5",
     "@babel/plugin-transform-modules-systemjs": "^7.7.4",
     "@babel/plugin-transform-modules-umd": "^7.7.4",
+    "@babel/plugin-transform-named-capturing-groups-regex": "^7.7.4",
     "@babel/plugin-transform-new-target": "^7.7.4",
     "@babel/plugin-transform-object-assign": "^7.7.4",
     "@babel/plugin-transform-object-set-prototype-of-to-assign": "^7.7.4",
@@ -97,6 +100,7 @@
     "@babel/plugin-transform-typeof-symbol": "^7.7.4",
     "@babel/plugin-transform-typescript": "^7.7.4",
     "@babel/plugin-transform-unicode-regex": "^7.7.4",
+    "@babel/preset-env": "^7.7.4",
     "@babel/preset-flow": "^7.7.4",
     "@babel/preset-react": "^7.7.4",
     "@babel/preset-typescript": "^7.7.7"

packages/babel-standalone/scripts/pluginConfig.json

@@ -15,11 +15,13 @@
   "syntax-object-rest-spread",
   "syntax-optional-catch-binding",
   "syntax-pipeline-operator",
+  "syntax-top-level-await",
   "syntax-typescript",
   "proposal-async-generator-functions",
   "proposal-class-properties",
   "proposal-decorators",
   "proposal-do-expressions",
+  "proposal-dynamic-import",
   "proposal-export-default-from",
   "proposal-export-namespace-from",
   "proposal-function-bind",
@@ -57,6 +59,7 @@
   "transform-modules-commonjs",
   "transform-modules-systemjs",
   "transform-modules-umd",
+  "transform-named-capturing-groups-regex",
   "transform-new-target",
   "transform-object-assign",
   "transform-object-super",

packages/babel-standalone/src/generated/plugins.js

@@ -19,11 +19,13 @@ import syntaxJsx from "@babel/plugin-syntax-jsx";
 import syntaxObjectRestSpread from "@babel/plugin-syntax-object-rest-spread";
 import syntaxOptionalCatchBinding from "@babel/plugin-syntax-optional-catch-binding";
 import syntaxPipelineOperator from "@babel/plugin-syntax-pipeline-operator";
+import syntaxTopLevelAwait from "@babel/plugin-syntax-top-level-await";
 import syntaxTypescript from "@babel/plugin-syntax-typescript";
 import proposalAsyncGeneratorFunctions from "@babel/plugin-proposal-async-generator-functions";
 import proposalClassProperties from "@babel/plugin-proposal-class-properties";
 import proposalDecorators from "@babel/plugin-proposal-decorators";
 import proposalDoExpressions from "@babel/plugin-proposal-do-expressions";
+import proposalDynamicImport from "@babel/plugin-proposal-dynamic-import";
 import proposalExportDefaultFrom from "@babel/plugin-proposal-export-default-from";
 import proposalExportNamespaceFrom from "@babel/plugin-proposal-export-namespace-from";
 import proposalFunctionBind from "@babel/plugin-proposal-function-bind";
@@ -61,6 +63,7 @@ import transformModulesAmd from "@babel/plugin-transform-modules-amd";
 import transformModulesCommonjs from "@babel/plugin-transform-modules-commonjs";
 import transformModulesSystemjs from "@babel/plugin-transform-modules-systemjs";
 import transformModulesUmd from "@babel/plugin-transform-modules-umd";
+import transformNamedCapturingGroupsRegex from "@babel/plugin-transform-named-capturing-groups-regex";
 import transformNewTarget from "@babel/plugin-transform-new-target";
 import transformObjectAssign from "@babel/plugin-transform-object-assign";
 import transformObjectSuper from "@babel/plugin-transform-object-super";
@@ -105,11 +108,13 @@ export {
   syntaxObjectRestSpread,
   syntaxOptionalCatchBinding,
   syntaxPipelineOperator,
+  syntaxTopLevelAwait,
   syntaxTypescript,
   proposalAsyncGeneratorFunctions,
   proposalClassProperties,
   proposalDecorators,
   proposalDoExpressions,
+  proposalDynamicImport,
   proposalExportDefaultFrom,
   proposalExportNamespaceFrom,
   proposalFunctionBind,
@@ -147,6 +152,7 @@ export {
   transformModulesCommonjs,
   transformModulesSystemjs,
   transformModulesUmd,
+  transformNamedCapturingGroupsRegex,
   transformNewTarget,
   transformObjectAssign,
   transformObjectSuper,
@@ -192,11 +198,13 @@ export const all = {
   "syntax-object-rest-spread": syntaxObjectRestSpread,
   "syntax-optional-catch-binding": syntaxOptionalCatchBinding,
   "syntax-pipeline-operator": syntaxPipelineOperator,
+  "syntax-top-level-await": syntaxTopLevelAwait,
   "syntax-typescript": syntaxTypescript,
   "proposal-async-generator-functions": proposalAsyncGeneratorFunctions,
   "proposal-class-properties": proposalClassProperties,
   "proposal-decorators": proposalDecorators,
   "proposal-do-expressions": proposalDoExpressions,
+  "proposal-dynamic-import": proposalDynamicImport,
   "proposal-export-default-from": proposalExportDefaultFrom,
   "proposal-export-namespace-from": proposalExportNamespaceFrom,
   "proposal-function-bind": proposalFunctionBind,
@@ -234,6 +242,7 @@ export const all = {
   "transform-modules-commonjs": transformModulesCommonjs,
   "transform-modules-systemjs": transformModulesSystemjs,
   "transform-modules-umd": transformModulesUmd,
+  "transform-named-capturing-groups-regex": transformNamedCapturingGroupsRegex,
   "transform-new-target": transformNewTarget,
   "transform-object-assign": transformObjectAssign,
   "transform-object-super": transformObjectSuper,

packages/babel-standalone/src/index.js

@@ -21,8 +21,9 @@ import presetStage0 from "./preset-stage-0";
 import presetStage1 from "./preset-stage-1";
 import presetStage2 from "./preset-stage-2";
 import presetStage3 from "./preset-stage-3";
-import presetReact from "@babel/preset-react";
+import presetEnv from "@babel/preset-env";
 import presetFlow from "@babel/preset-flow";
+import presetReact from "@babel/preset-react";
 import presetTypescript from "@babel/preset-typescript";
 
 import { runScripts } from "./transformScriptTags";
@@ -136,10 +137,16 @@ export function registerPlugins(newPlugins: {
  */
 export function registerPreset(name: string, preset: Object | Function): void {
   if (Object.prototype.hasOwnProperty.call(availablePresets, name)) {
+    if (name === "env") {
+      console.warn(
+        "@babel/preset-env is now included in @babel/standalone, please remove @babel/preset-env-standalone",
+      );
+    } else {
       console.warn(
         `A preset named "${name}" is already registered, it will be overridden`,
       );
     }
+  }
   availablePresets[name] = preset;
 }
 /**
@@ -163,6 +170,7 @@ registerPlugins(all);
 // Want to get rid of this whitelist of presets?
 // Wait! Please read https://github.com/babel/babel/pull/6177 first.
 registerPresets({
+  env: presetEnv,
   es2015: preset2015,
   es2016: () => {
     return {

packages/babel-standalone/test/babel.js

@@ -110,6 +110,61 @@
       ).toThrow(/Invalid plugin specified in Babel options: "lolfail"/);
     });
 
+    describe("env preset", () => {
+      it("works w/o targets", () => {
+        const output = Babel.transform("const a = 1;", {
+          sourceType: "script",
+          presets: ["env"],
+        }).code;
+        expect(output).toBe("var a = 1;");
+      });
+
+      it("doesn't transpile `const` with chrome 60", () => {
+        const output = Babel.transform("const a = 1;", {
+          sourceType: "script",
+          presets: [
+            [
+              "env",
+              {
+                targets: {
+                  chrome: 60,
+                },
+              },
+            ],
+          ],
+        }).code;
+        expect(output).toBe("const a = 1;");
+      });
+
+      it("transpiles `const` with chrome 60 and preset-es2015", () => {
+        const output = Babel.transform("const a = 1;", {
+          sourceType: "script",
+          presets: [
+            [
+              "env",
+              {
+                targets: {
+                  chrome: 60,
+                },
+              },
+            ],
+            "es2015",
+          ],
+        }).code;
+        expect(output).toBe("var a = 1;");
+      });
+
+      it("uses transform-new-targets plugin", () => {
+        const output = Babel.transform("function Foo() {new.target}", {
+          sourceType: "script",
+          presets: ["env"],
+        }).code;
+        expect(output).toBe(
+          "function Foo() {\n  this instanceof Foo ? this.constructor : void 0;\n}",
+        );
+      });
+    });
+
     describe("custom plugins and presets", () => {
       const lolizer = () => ({
         visitor: {