Switch to new @cspotcode/source-map-support, using trace-mapping

.vscode/launch.json

@@ -11,6 +11,18 @@
       "skipFiles": [
         "<node_internals>/**/*.js"
       ],
+    },
+    {
+      "name": "Debug Example: running a test fixture against local ts-node/esm loader",
+      "type": "pwa-node",
+      "request": "launch",
+      "cwd": "${workspaceFolder}/tests/esm",
+      "runtimeArgs": ["--loader", "../../ts-node/esm"],
+      "program": "throw error.ts",
+      "outputCapture": "std",
+      "skipFiles": [
+        "<node_internals>/**/*.js"
+      ],
     }
   ],
 }

package.json

@@ -157,7 +157,7 @@
     }
   },
   "dependencies": {
-    "@cspotcode/source-map-support": "0.7.0",
+    "@cspotcode/source-map-support": "^0.8.0",
     "@tsconfig/node10": "^1.0.7",
     "@tsconfig/node12": "^1.0.7",
     "@tsconfig/node14": "^1.0.0",

src/test/esm-loader.spec.ts

@@ -48,22 +48,24 @@ test.suite('esm', (test) => {
       expect(err).toBe(null);
       expect(stdout).toBe('foo bar baz biff libfoo\n');
     });
-    test('should use source maps', async () => {
-      const { err, stdout } = await exec(
+    test('should use source maps', async (t) => {
+      const { err, stdout, stderr } = await exec(
         `${CMD_ESM_LOADER_WITHOUT_PROJECT} "throw error.ts"`,
         {
           cwd: join(TEST_DIR, './esm'),
         }
       );
       expect(err).not.toBe(null);
+      const expectedModuleUrl = pathToFileURL(
+        join(TEST_DIR, './esm/throw error.ts')
+      ).toString();
       expect(err!.message).toMatch(
         [
-          `${pathToFileURL(join(TEST_DIR, './esm/throw error.ts'))
-            .toString()
-            .replace(/%20/g, ' ')}:100`,
+          `${expectedModuleUrl}:100`,
           "  bar() { throw new Error('this is a demo'); }",
           '                ^',
           'Error: this is a demo',
+          `    at Foo.bar (${expectedModuleUrl}:100:17)`,
         ].join('\n')
       );
     });