fix: add prepackage step to rewrite imports

Author: 6eDesign

package.json

@@ -5,6 +5,7 @@
   "scripts": {
     "dev": "svelte-kit dev",
     "package": "svelte-kit package",
+    "postpackage": "node scripts/postpackage",
     "prebuild": "rm -rf build",
     "build": "svelte-kit build",
     "postbuild": "touch docs/.nojekyll",

scripts/postpackage.js

@@ -0,0 +1,41 @@
+import { promises as fs } from 'fs';
+import path from 'path';
+
+const PACKAGE_FOLDER = process.env.PACKAGE_FOLDER || 'package';
+const TARGETS = ['components', 'config', 'src', 'stores'];
+const BASE_DIR = path.join(process.cwd(), PACKAGE_FOLDER);
+
+const getFolder = async (folder, depth = 0) => {
+	const contents = await fs.readdir(path.join(process.cwd(), PACKAGE_FOLDER, folder), {
+		withFileTypes: true
+	});
+
+	return {
+		depth,
+		folders: await Promise.all(
+			contents
+				.filter((f) => f.isDirectory())
+				.map((dir) => getFolder(`${folder}/${dir.name}`, depth + 1))
+		),
+		files: contents.filter((f) => !f.isDirectory()).map(({ name }) => `${folder}/${name}`)
+	};
+};
+
+const transformFolder = async ({ folders, files, depth }) => {
+	await Promise.all(
+		files.map(async (f) => {
+			const filepath = path.join(BASE_DIR, f);
+			const contents = await fs.readFile(filepath, 'utf-8');
+			const base = depth ? [...Array(depth + 1).fill('..')].join('/') : './';
+			const updated = contents.replace(/from '\$lib(.*)'/g, `from '${base}$1'`);
+			await Promise.all(
+				[
+					updated === contents ? null : fs.writeFile(filepath, updated),
+					...folders.map(transformFolder)
+				].filter(Boolean)
+			);
+		})
+	);
+};
+
+Promise.all(TARGETS.map((t) => getFolder(t).then(transformFolder)));