Remove esm usage

Author: NullVoxPopuli

lib/load_brocfile.ts

@@ -1,8 +1,5 @@
 import path from 'path';
 import findup from 'findup-sync';
-import esm from 'esm';
-
-const esmRequire = esm(module);
 
 interface LoadBrocfileOptions {
   brocfilePath?: string;
@@ -37,8 +34,7 @@ function requireBrocfile(brocfilePath: string) {
     // Load brocfile via ts-node
     brocfile = require(brocfilePath);
   } else {
-    // Load brocfile via esm shim
-    brocfile = esmRequire(brocfilePath);
+    brocfile = require(brocfilePath);
   }
 
   // ESM `export default X` is represented as module.exports = { default: X }

test/load_brocfile_test.js

@@ -1,9 +1,6 @@
 import loadBrocfile from '../lib/load_brocfile';
 import BroccoliSource from 'broccoli-source';
 import chai from 'chai';
-import esm from 'esm';
-
-const esmRequire = esm(module);
 
 const projectPath = 'test/fixtures/project';
 const projectPathEsm = 'test/fixtures/project-esm';
@@ -13,7 +10,7 @@ const projectPathTsConfig = 'test/fixtures/project-ts-tsconfig';
 const brocfileFixture = require('../' + projectPath + '/Brocfile.js');
 // eslint-disable-next-line @typescript-eslint/no-var-requires
 const brocfileFunctionFixture = require('../' + projectPath + '/Brocfile-Function.js');
-const brocfileEsmFixture = esmRequire('../' + projectPathEsm + '/Brocfile.js');
+const brocfileEsmFixture = require('../' + projectPathEsm + '/Brocfile.js');
 
 describe('loadBrocfile', function() {
   let oldCwd = null;