Set package's main and re-export the utilities at it.

package.json

@@ -1,11 +1,12 @@
 {
   "name": "userstyles",
   "description": "A collection of all my userstyles for various websites.",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "author": "Bauke <me@bauke.xyz>",
   "homepage": "https://bauke.xyz/userstyles",
   "repository": "https://git.holllo.cc/Bauke/userstyles",
   "license": "MIT",
+  "main": "source/index.js",
   "scripts": {
     "start": "nodemon 'source/index.js' --watch 'source/' --ext 'scss'",
     "build": "USERSTYLE_ENV='production' node 'source/index.js'",

source/index.js

@@ -1,7 +1,11 @@
 const {promises: fsp} = require('fs');
 const {join} = require('path');
 
-const {createUserstyle} = require('./utilities');
+const {
+  createUserstyle,
+  readStyleMetadata,
+  styleHasImages
+} = require('./utilities');
 
 async function main() {
   // Make sure the `build/` directory exists.
@@ -23,7 +27,11 @@ const styles = ['tildes-baukula', 'tildes-compact'];
 // Export the `main()` function as `build()` for external use.
 module.exports = {
   build: main,
-  styles
+  styles,
+  // Utilities.
+  createUserstyle,
+  readStyleMetadata,
+  styleHasImages
 };
 
 // Run `main()` if this script was called directly (like `node source/index.js`).