feat(node): stabilize detecting if CJS via `"type": "commonjs"` in a package.json (#26439)

This will respect `"type": "commonjs"` in a package.json to determine if
`.js`/`.jsx`/`.ts`/.tsx` files are CJS or ESM. If the file is found to
be ESM it will be loaded as ESM though.

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/registry/npm/@denotest/install-launch-cjs-temp-dir/1.0.0/install.js b/tests/registry/npm/@denotest/install-launch-cjs-temp-dir/1.0.0/install.js
new file mode 100644
index 000000000..61aadeb83
--- /dev/null
+++ b/tests/registry/npm/@denotest/install-launch-cjs-temp-dir/1.0.0/install.js
@@ -0,0 +1,12 @@
+const tempDir = Deno.makeTempDirSync();
+try {
+  // should work requiring these because this was launched via a node binary entrypoint
+  Deno.writeTextFileSync(`${tempDir}/index.js`, "module.exports = require('./other');");
+  Deno.writeTextFileSync(`${tempDir}/other.js`, "module.exports = (a, b) => a + b;");
+  const add = require(`${tempDir}/index.js`);
+  if (add(1, 2) !== 3) {
+    throw new Error("FAILED");
+  }
+} finally {
+  Deno.removeSync(tempDir, { recursive: true });
+}