fix(compartment-mapper): top-level "this" is "module.exports" (#2620)

For CJS compat, the top-level `this` must be equal to `module.exports`
(which must be equal to `exports`).

This implementation changes the CJS parsers to call the wrapper
`functor` using the context of `module.exports`.

Fixed an unrelated "dynamic require" test so it does not use the CJS compat fixtures.

packages/compartment-mapper/src/parse-cjs.js

@@ -51,7 +51,15 @@ export const parseCjs = (
       readPowers,
     });
 
-    functor(require, moduleExports, module, filename, dirname);
+    // In CommonJS, the top-level `this` is the `module.exports` object.
+    functor.call(
+      moduleExports,
+      require,
+      moduleExports,
+      module,
+      filename,
+      dirname,
+    );
 
     afterExecute();
   };

packages/compartment-mapper/src/parse-pre-cjs.js

@@ -43,7 +43,15 @@ export const parsePreCjs = (
       readPowers,
     });
 
-    functor(require, moduleExports, module, filename, dirname);
+    // In CommonJS, the top-level `this` is the `module.exports` object.
+    functor.call(
+      moduleExports,
+      require,
+      moduleExports,
+      module,
+      filename,
+      dirname,
+    );
 
     afterExecute();
   };

packages/compartment-mapper/test/dynamic-require.test.js

@@ -391,7 +391,7 @@ test('sync module transforms work with dynamic require support', async t => {
 
 test('sync module transforms work without dynamic require support', async t => {
   const fixture = new URL(
-    'fixtures-cjs-compat/node_modules/app/index.js',
+    'fixtures-dynamic/node_modules/static-app/index.js',
     import.meta.url,
   ).toString();
 
@@ -413,5 +413,5 @@ test('sync module transforms work without dynamic require support', async t => {
     syncModuleTransforms,
   });
 
-  t.true(transformCount === 29);
+  t.is(transformCount, 2);
 });

packages/compartment-mapper/test/snapshots/error-handling.test.js.md

@@ -112,7 +112,7 @@ Generated by [AVA](https://avajs.dev).
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊
         at Compartment.importNow (file://.../ses/src/compartment.js:…)␊
         at require (file://.../compartment-mapper/src/parse-cjs-shared-export-wrapper.js:…)␊
-        at eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
+        at Proxy.eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
         at Object.execute (file://.../compartment-mapper/src/parse-pre-cjs.js:…)␊
         at execute (file://.../ses/src/module-instance.js:…)␊
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊
@@ -128,7 +128,7 @@ Generated by [AVA](https://avajs.dev).
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊
         at Compartment.importNow (file://.../ses/src/compartment.js:…)␊
         at require (file://.../compartment-mapper/src/parse-cjs-shared-export-wrapper.js:…)␊
-        at eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
+        at Proxy.eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
         at Object.execute (file://.../compartment-mapper/src/parse-pre-cjs.js:…)␊
         at execute (file://.../ses/src/module-instance.js:…)␊
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊
@@ -144,7 +144,7 @@ Generated by [AVA](https://avajs.dev).
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊
         at Compartment.importNow (file://.../ses/src/compartment.js:…)␊
         at require (file://.../compartment-mapper/src/parse-cjs-shared-export-wrapper.js:…)␊
-        at eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
+        at Proxy.eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
         at Object.execute (file://.../compartment-mapper/src/parse-pre-cjs.js:…)␊
         at execute (file://.../ses/src/module-instance.js:…)␊
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊
@@ -160,7 +160,7 @@ Generated by [AVA](https://avajs.dev).
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊
         at Compartment.importNow (file://.../ses/src/compartment.js:…)␊
         at require (file://.../compartment-mapper/src/parse-cjs-shared-export-wrapper.js:…)␊
-        at eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
+        at Proxy.eval (eval at <anonymous> (eval at makeEvaluate (file://.../ses/src/make-evaluate.js:…)), <anonymous>:…)␊
         at Object.execute (file://.../compartment-mapper/src/parse-pre-cjs.js:…)␊
         at execute (file://.../ses/src/module-instance.js:…)␊
         at compartmentImportNow (file://.../ses/src/compartment.js:…)␊