fix: use createRequire for ESM, fixes #334

src/emitters/streamed-emitter.ts

@@ -1,10 +1,10 @@
 import { stringify } from '../util/underscore'
 import { Emitter } from './emitter'
+import { PassThrough } from 'stream'
 
 export class StreamedEmitter implements Emitter {
   public buffer = '';
-  // eslint-disable-next-line @typescript-eslint/no-var-requires
-  public stream: NodeJS.ReadWriteStream = new (require('stream').PassThrough)()
+  public stream: NodeJS.ReadWriteStream = new PassThrough()
   public write (html: any) {
     this.stream.write(stringify(html))
   }

src/fs/node-require.mjs

@@ -0,0 +1,5 @@
+import { createRequire } from 'module'
+
+const require = createRequire(import.meta.url)
+
+export const requireResolve = require.resolve

src/fs/node-require.mjs.d.ts

@@ -0,0 +1 @@
+export declare function requireResolve(file: string): string;

src/fs/node-require.ts

@@ -0,0 +1 @@
+export const requireResolve = require.resolve

src/fs/node.ts

@@ -1,6 +1,7 @@
 import * as _ from '../util/underscore'
 import { sep, resolve as nodeResolve, extname, dirname as nodeDirname } from 'path'
 import { stat, statSync, readFile as nodeReadFile, readFileSync as nodeReadFileSync } from 'fs'
+import { requireResolve } from './node-require'
 
 const statAsync = _.promisify(stat)
 const readFileAsync = _.promisify<string, string, string>(nodeReadFile)
@@ -33,7 +34,7 @@ export function resolve (root: string, file: string, ext: string) {
 }
 export function fallback (file: string) {
   try {
-    return require.resolve(file)
+    return requireResolve(file)
   } catch (e) {}
 }
 export function dirname (filepath: string) {