more serialization

src/lib/serial/serialization.ts

@@ -0,0 +1,33 @@
+/**
+ * Compress JSON.stringify with gzip
+ */
+export async function stringifyCompressed(chords: any): Promise<Blob> {
+  const stream = new Blob([JSON.stringify(chords)]).stream().pipeThrough(new CompressionStream("gzip"))
+  return await new Response(stream).blob()
+}
+
+/**
+ * Decompress JSON.parse with gzip
+ */
+export async function parseCompressed<T>(blob: Blob): Promise<T> {
+  const stream = blob.stream().pipeThrough(new DecompressionStream("gzip"))
+  return await new Response(stream).json()
+}
+
+/**
+ * Share JS object as url query param
+ */
+export async function getSharableUrl(name: string, data: any, baseHref = window.location.href): Promise<URL> {
+  return new Promise(async resolve => {
+    const reader = new FileReader()
+    reader.onloadend = function () {
+      const base64String = (reader.result as string)
+        .replace(/^data:application\/octet-stream;base64,/, "")
+        .replace(/==$/, "")
+      const url = new URL(baseHref)
+      url.searchParams.set(name, base64String)
+      resolve(url)
+    }
+    reader.readAsDataURL(await stringifyCompressed(data))
+  })
+}