fix: require doesn't work in esm projects (#698)

package.json

@@ -18,9 +18,10 @@
     "unit:ts-esm": "cross-env TS_NODE_PROJECT=./test/configs/ts-esm.tsconfig.json FASTIFY_AUTOLOAD_TYPESCRIPT=1 node -r ts-node/register --loader ts-node/esm suite-runner.js \"templates/app-ts-esm/test/**/*.test.ts\"",
     "unit:suites": "node should-skip-test-suites.js || npm run all-suites",
     "all-suites": "npm run unit:cjs && npm run unit:esm && npm run unit:ts-cjs && npm run unit:ts-esm",
+    "unit:cli-js-esm": "node suite-runner.js \"test/esm/**/*.test.js\"",
     "unit:cli-js": "tap \"test/**/*.test.js\" --no-coverage --timeout 400 --jobs 1 --color -R specy",
     "unit:cli-ts": "cross-env TS_NODE_PROJECT=./test/configs/ts-cjs.tsconfig.json tap \"test/**/*.test.ts\" --no-coverage --timeout 400 --jobs 1 --color -R specy",
-    "unit:cli": "npm run unit:cli-js && npm run unit:cli-ts",
+    "unit:cli": "npm run unit:cli-js && npm run unit:cli-ts && npm run unit:cli-js-esm",
     "test:cli-and-typescript": "npm run unit:cli && npm run test:typescript",
     "test:typescript": "tsd templates/plugin -t ./../../index.d.ts && tsc --project templates/app-ts/tsconfig.json --noEmit && tsc --project templates/app-ts-esm/tsconfig.json --noEmit"
   },

test/esm/data/custom-logger.cjs

@@ -0,0 +1,8 @@
+'use strict'
+
+module.exports = {
+  name: 'Custom Logger',
+  customLevels: {
+    test: 99
+  }
+}

test/esm/package.json

@@ -0,0 +1,3 @@
+{
+    "type": "module"
+}

test/esm/util.test.js

@@ -0,0 +1,16 @@
+import { requireModule } from '../../util.js'
+import { resolve, join } from 'node:path'
+import t from 'tap'
+import * as url from 'url'
+
+const test = t.test
+
+const __dirname = url.fileURLToPath(new URL('.', import.meta.url))
+
+test('requiring a commonjs module works in an esm project', (t) => {
+  t.plan(1)
+  const module = requireModule(
+    resolve(join(__dirname, './data/custom-logger.cjs'))
+  )
+  t.strictSame(module, { name: 'Custom Logger', customLevels: { test: 99 } })
+})

util.js

@@ -24,9 +24,7 @@ function exit (message) {
 function requireModule (moduleName) {
   if (fs.existsSync(moduleName)) {
     const moduleFilePath = path.resolve(moduleName)
-    const moduleFileExtension = path.extname(moduleName)
-    const modulePath = moduleFilePath.split(moduleFileExtension)[0]
-    return require(modulePath)
+    return require(moduleFilePath)
   } else {
     return require(moduleName)
   }