fix to use with sveltekit

tests/unit/quill.spec.js

@@ -0,0 +1,26 @@
+import {setTimeout} from 'timers/promises'
+import {test, expect, beforeAll} from 'vitest'
+import {Editor} from '$lib/index.js'
+
+beforeAll(() => {
+	document.body.innerHTML = '<main id="xxx"></main>'
+})
+
+function doc_query(selector) {
+	const node = document.querySelector(selector)
+	if (!node) {
+		throw new Error(`No element found for selector: ${selector}`)
+	}
+	return node
+}
+
+test('Editor', async () => {
+	const target = doc_query('main#xxx')
+	// const component = new Editor({target})
+	new Editor({target})
+
+	await setTimeout(3000)
+
+	// const div = doc_query('div.ql-editor')
+	expect(target).toBeDefined()
+})