handle unwrapping `require` in any expression (#3292)

1 files changed, 64 insertions, 0 deletions

diff --git a/test/bundler/bundler_cjs2esm.test.ts b/test/bundler/bundler_cjs2esm.test.ts
index 2c498a4c6..01a17356b 100644
--- a/test/bundler/bundler_cjs2esm.test.ts
+++ b/test/bundler/bundler_cjs2esm.test.ts
@@ -3,6 +3,19 @@ import dedent from "dedent";
 import { itBundled, testForFile } from "./expectBundled";
 var { describe, test, expect } = testForFile(import.meta.path);
 
+const fakeReactNodeModules = {
+  "/node_modules/react/index.js": /* js */ `
+    module.exports = { react: "react" }
+  `,
+  "/node_modules/react/package.json": /* json */ `
+    {
+      "name": "react",
+      "version": "2.0.0",
+      "main": "index.js"
+    }
+  `,
+};
+
 describe("bundler", () => {
   itBundled("cjs2esm/ModuleExportsFunction", {
     files: {
@@ -222,4 +235,55 @@ describe("bundler", () => {
       stdout: "development",
     },
   });
+  itBundled("cjs2esm/UnwrappedModuleRequireAssigned", {
+    files: {
+      "/entry.js": /* js */ `
+        const react = require("react");
+        console.log(react.react);
+        
+        const react1 = (console.log(require("react").react), require("react"));
+        console.log(react1.react);
+        
+        const react2 = (require("react"), console.log(require("react").react));
+        console.log(react2);
+        
+        let x = {};
+        x.react = require("react");
+        console.log(x.react.react);
+        
+        console.log(require("react").react);
+        
+        let y = {};
+        y[require("react")] = require("react");
+        console.log(y[require("react")].react);
+
+        let r = require("react");
+        console.log(r.react);
+        r = require("react");
+        console.log(r.react);
+
+        let n = 1;
+        n = require("react");
+        console.log(n.react);
+
+        let m = 1,
+          o = require("react");
+        console.log(m, o.react);
+
+        let h = Math.random() > 0.5;
+        let p = require(h ? "react" : "react");
+        console.log(p.react);
+
+        console.log(require(h ? "react" : "react").react);
+      `,
+      ...fakeReactNodeModules,
+    },
+    onAfterBundle: api => {
+      const code = api.readFile("out.js");
+      expect(code).toContain("__toESM(");
+    },
+    run: {
+      stdout: "react\nreact\nreact\nreact\nundefined\nreact\nreact\nreact\nreact\nreact\nreact\n1 react\nreact\nreact",
+    },
+  });
 });