make eslint-rules commonjs

Author: Artmann

build/ci/postInstall.js

@@ -138,7 +138,8 @@ exports.javascript = {
  * See comments here build/webpack/moment.js
  */
 function verifyMomentIsOnlyUsedByJupyterLabCoreUtils() {
-    const packageLock = require(path.join(__dirname, '..', '..', 'package-lock.json'));
+    const packageLockPath = path.join(__dirname, '..', '..', 'package-lock.json');
+    const packageLock = JSON.parse(fs.readFileSync(packageLockPath, 'utf8'));
     const packagesAllowedToUseMoment = ['node_modules/@jupyterlab/coreutils', '@jupyterlab/coreutils'];
     const otherPackagesUsingMoment = [];
     ['packages', 'dependencies'].forEach((key) => {

build/eslint-rules/package.json

@@ -1,5 +1,6 @@
 {
     "name": "eslint-plugin-local-rules",
     "version": "1.0.0",
+    "type": "commonjs",
     "main": "index.js"
 }