When source file is redirected, set the prototype correctly in node factory (#48862)

Fixes #48039

src/testRunner/tsconfig.json

@@ -154,6 +154,7 @@
         "unittests/tsc/incremental.ts",
         "unittests/tsc/listFilesOnly.ts",
         "unittests/tsc/projectReferences.ts",
+        "unittests/tsc/redirect.ts",
         "unittests/tsc/runWithoutArgs.ts",
         "unittests/tscWatch/consoleClearing.ts",
         "unittests/tscWatch/emit.ts",

src/testRunner/unittests/tsc/redirect.ts

@@ -0,0 +1,34 @@
+namespace ts {
+    describe("unittests:: tsc:: redirect::", () => {
+        verifyTsc({
+            scenario: "redirect",
+            subScenario: "when redirecting ts file",
+            fs: () => loadProjectFromFiles({
+                "/src/project/tsconfig.json": JSON.stringify({
+                    compilerOptions: {
+                        outDir: "out"
+                    },
+                    include: [
+                        "copy1/node_modules/target/*",
+                        "copy2/node_modules/target/*",
+                    ]
+                }),
+                "/src/project/copy1/node_modules/target/index.ts": "export const a = 1;",
+                "/src/project/copy1/node_modules/target/import.ts": `import {} from "./";`,
+                "/src/project/copy1/node_modules/target/package.json": JSON.stringify({
+                    name: "target",
+                    version: "1.0.0",
+                    main: "index.js",
+                }),
+                "/src/project/copy2/node_modules/target/index.ts": "export const a = 1;",
+                "/src/project/copy2/node_modules/target/import.ts": `import {} from "./";`,
+                "/src/project/copy2/node_modules/target/package.json": JSON.stringify({
+                    name: "target",
+                    version: "1.0.0",
+                    main: "index.js",
+                }),
+            }),
+            commandLineArgs: ["-p", "src/project"],
+        });
+    });
+}