[keyserver] Fix rust-node-addon after deprecation of --experimental-s…

…pecifier-resolution=node

Summary:
Context in [ENG-3059](https://linear.app/comm/issue/ENG-3059/keyserver-fails-to-load-napi-compiled-module). `rust-node-addon` was broken by D6695, but `--experimental-specifier-resolution=node` is going away so we need another solution.

I got this solution from [this GitHub comment](nodejs/node#40541 (comment)).

Depends on D6783

Test Plan: Confirm I could import `rust-node-addon` and call methods on it from @jon's `jonringer/identity-deleteuserrpc` branch

Reviewers: jon, varun, max

Reviewed By: jon

Subscribers: tomek, atul, jon

Differential Revision: https://phab.comm.dev/D6784

keyserver/addons/rust-node-addon/index.js

@@ -1,7 +1,14 @@
 // @flow
 
+import invariant from 'invariant';
+import { createRequire } from 'module';
+
 const { platform, arch } = process;
 
+const importMetaURL = import.meta.url;
+invariant(importMetaURL, 'import.meta.url should be set');
+const require = createRequire(importMetaURL);
+
 type RustAPI = {
   +registerUser: (
     userId: string,
@@ -16,16 +23,16 @@ async function getRustAPI(): Promise<RustAPI> {
   let nativeBinding = null;
   if (platform === 'darwin' && arch === 'x64') {
     // $FlowFixMe
-    nativeBinding = await import('./napi/rust-node-addon.darwin-x64.node');
+    nativeBinding = require('./napi/rust-node-addon.darwin-x64.node');
   } else if (platform === 'darwin' && arch === 'arm64') {
     // $FlowFixMe
-    nativeBinding = await import('./napi/rust-node-addon.darwin-arm64.node');
+    nativeBinding = require('./napi/rust-node-addon.darwin-arm64.node');
   } else if (platform === 'linux' && arch === 'x64') {
     // $FlowFixMe
-    nativeBinding = await import('./napi/rust-node-addon.linux-x64-gnu.node');
+    nativeBinding = require('./napi/rust-node-addon.linux-x64-gnu.node');
   } else if (platform === 'linux' && arch === 'arm64') {
     // $FlowFixMe
-    nativeBinding = await import('./napi/rust-node-addon.linux-arm64-gnu.node');
+    nativeBinding = require('./napi/rust-node-addon.linux-arm64-gnu.node');
   } else {
     throw new Error(`Unsupported OS: ${platform}, architecture: ${arch}`);
   }
@@ -34,7 +41,7 @@ async function getRustAPI(): Promise<RustAPI> {
     throw new Error('Failed to load native binding');
   }
 
-  const { registerUser } = nativeBinding.default;
+  const { registerUser } = nativeBinding;
   return { registerUser };
 }
 

keyserver/addons/rust-node-addon/package.json

@@ -22,6 +22,9 @@
     }
   },
   "license": "BSD-3-Clause",
+  "dependencies": {
+    "invariant": "^2.2.4"
+  },
   "devDependencies": {
     "@napi-rs/cli": "^2.13.0"
   },