fix(NODE-6730): allow webpack bundling (#67)

Co-authored-by: Neal Beeken <neal.beeken@mongodb.com>

.github/workflows/webpack.yml

@@ -0,0 +1,47 @@
+name: Webpack
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Use Node.js LTS
+      uses: actions/setup-node@v4
+      with:
+        node-version: 'lts/*'
+
+    - name: "Build libmongocrypt"
+      shell: bash
+      run: |
+        npm run install:libmongocrypt
+
+    - name: "Install dependencies"
+      shell: bash
+      run: |
+        npm install
+
+    - name: "Install dependencies in the Webpack bundle test package"
+      shell: bash
+      working-directory: ./test/bundling/webpack
+      run: |
+        npm install
+
+    - name: "Install local mongodb-client-encryption into Webpack bundle test package"
+      shell: bash
+      working-directory: ./test/bundling/webpack
+      run: |
+        npm run install:ce
+
+    - name: "Run webpack build"
+      shell: bash
+      working-directory: ./test/bundling/webpack
+      run: |
+        npm run build

package.json

@@ -21,7 +21,7 @@
     "clang-format": "clang-format --style=file:.clang-format --Werror -i addon/*",
     "check:eslint": "ESLINT_USE_FLAT_CONFIG=false eslint src test",
     "check:clang-format": "clang-format --style=file:.clang-format --dry-run --Werror addon/*",
-    "test": "mocha --v8-expose-gc test",
+    "test": "mocha --v8-expose-gc test/unit",
     "prepare": "tsc",
     "rebuild": "node-gyp rebuild",
     "prebuild": "prebuild --runtime napi --strip --verbose --all"

src/index.ts

@@ -5,7 +5,14 @@ function load() {
   try {
     return require('../build/Release/mongocrypt.node');
   } catch {
-    return require('../build/Debug/mongocrypt.node');
+    // Webpack will fail when just returning the require, so we need to wrap
+    // in a try/catch and rethrow.
+    /* eslint no-useless-catch: 0 */
+    try {
+      return require('../build/Debug/mongocrypt.node');
+    } catch (error) {
+      throw error;
+    }
   }
 }
 

test/bundling/webpack/.gitignore

@@ -0,0 +1 @@
+dist/*

test/bundling/webpack/install_ce.cjs

@@ -0,0 +1,24 @@
+'use strict';
+
+const { execSync } = require('node:child_process');
+const { readFileSync } = require('node:fs');
+const { resolve } = require('node:path');
+
+const xtrace = (...args) => {
+  console.log(`running: ${args[0]}`);
+  return execSync(...args);
+};
+
+const ceRoot = resolve(__dirname, '../../..');
+console.log(`mongodb-client-encryption package root: ${ceRoot}`);
+
+const ceVersion = JSON.parse(
+  readFileSync(resolve(ceRoot, 'package.json'), { encoding: 'utf8' })
+).version;
+console.log(`mongodb-client-encryption Version: ${ceVersion}`);
+
+xtrace('npm pack --pack-destination test/bundling/webpack', { cwd: ceRoot });
+
+xtrace(`npm install --no-save mongodb-client-encryption-${ceVersion}.tgz`);
+
+console.log('mongodb-client-encryption installed!');