feat(node): add support of .node module (#2804)

node/_core.ts

@@ -25,5 +25,12 @@ if (Deno?.core) {
     eventLoopHasMoreWork(): boolean {
       return false;
     },
+    ops: {
+      op_napi_open(_filename: string) {
+        throw new Error(
+          "Node API is not supported in this environment",
+        );
+      },
+    },
   };
 }

node/module.ts

@@ -1350,7 +1350,9 @@ Module._extensions[".json"] = (module: Module, filename: string) => {
   }
 };
 
-// .node extension is not supported
+Module._extensions[".node"] = (module: Module, filename: string) => {
+  module.exports = core.ops.op_napi_open(filename);
+};
 
 function createRequireFromPath(filename: string): RequireFunction {
   // Allow a directory to be passed as the filename

node/module_test.ts

@@ -230,3 +230,19 @@ Deno.test("createRequire with http(s):// URL  throws with correct error message"
     "createRequire only supports 'file://' URLs for the 'filename' parameter. Received 'https://example.com/foo.js'",
   );
 });
+
+Deno.test("require Node-API module", () => {
+  const require = createRequire(import.meta.url);
+  if (Deno.build.os === "windows") {
+    // TODO(kt3k): Add lib binary for windows from 1_hello_world example of
+    // https://github.com/nodejs/node-addon-examples
+  }
+  if (Deno.build.os === "linux") {
+    // TODO(kt3k): Add lib binary for linux from 1_hello_world example of
+    // https://github.com/nodejs/node-addon-examples
+  }
+  if (Deno.build.os === "darwin") {
+    const str = require("./testdata/libhello_darwin.node").hello();
+    assertEquals(str, "world");
+  }
+});