From 49da681712f5b277f493665cc2c0e39eb8db20c7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <jlhwung@gmail.com>
Date: Thu, 5 Dec 2019 14:32:41 -0500
Subject: [PATCH] chore: copy preset-env-standalone test

---
 packages/babel-standalone/test/babel.js | 55 +++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/packages/babel-standalone/test/babel.js b/packages/babel-standalone/test/babel.js
index 056bfafca847..8fd2b8a60d56 100644
--- a/packages/babel-standalone/test/babel.js
+++ b/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: {