Switch to ESM

Change-type: major

Author: Page-

lib/btrfs.ts

@@ -1,4 +1,4 @@
-import { spawn } from './utils';
+import { spawn } from './utils.js';
 
 export const deleteSubvolAsync = function (subvol: string) {
 	return spawn('btrfs', ['subvolume', 'delete', subvol]).waitAsync();

lib/docker-delta.ts

@@ -2,9 +2,9 @@ import path from 'node:path';
 import Bluebird from 'bluebird';
 import stream from 'node:stream';
 import { TypedError } from 'typed-error';
-import * as rsync from './rsync';
-import * as btrfs from './btrfs';
-import { spawn } from './utils';
+import * as rsync from './rsync.js';
+import * as btrfs from './btrfs.js';
+import { spawn } from './utils.js';
 import type Dockerode from 'dockerode';
 import * as dt from 'docker-toolbelt';
 

lib/rsync.ts

@@ -1,7 +1,7 @@
 import fs from 'node:fs';
 import tmp from 'tmp-promise';
 import path from 'node:path';
-import { spawn, mkfifoSync } from './utils';
+import { spawn, mkfifoSync } from './utils.js';
 
 export const createRsyncStream = async function (
 	src: string,

package.json

@@ -2,7 +2,8 @@
   "name": "docker-delta",
   "version": "4.1.1",
   "description": "Generate binary filesystem diffs between docker images to speed up distribution",
-  "main": "out/docker-delta",
+  "type": "module",
+  "main": "out/docker-delta.js",
   "engines": {
     "node": ">=22.22.0 <23.0.0 || >=24.13.0"
   },

test/docker-delta.spec.js

@@ -1,17 +1,18 @@
-/* eslint-disable @typescript-eslint/no-require-imports */
-const { describe, before, it } = require('mocha');
-const chai = require('chai');
+import { describe, before, it } from 'mocha';
+import chai from 'chai';
 
-chai.use(require('chai-events'));
-chai.use(require('chai-stream'));
+import chaiEvents from 'chai-events';
+import chaiStream from 'chai-stream';
+chai.use(chaiEvents);
+chai.use(chaiStream);
 
-const JSONStream = require('JSONStream');
-const stream = require('node:stream');
-const Dockerode = require('dockerode');
+import JSONStream from 'JSONStream';
+import stream from 'node:stream';
+import Dockerode from 'dockerode';
 
 const docker = new Dockerode();
 
-const dockerDelta = require('..');
+import * as dockerDelta from '../out/docker-delta.js';
 
 const { expect } = chai;
 

tsconfig.json

@@ -1,6 +1,6 @@
 {
 	"compilerOptions": {
-		"module": "Node16",
+		"module": "Node20",
 		"strict": true,
 		"noUnusedParameters": true,
 		"noUnusedLocals": true,