initial commit

src/util/minecraft.ts

@@ -0,0 +1,14 @@
+export async function getJavaUuid(username: string) {
+  const response = await fetch(`https://api.mojang.com/users/profiles/minecraft/${username}`);
+  if (!response.ok) {
+    // rate limit
+    if (response.status == 429) return null;
+    // user doesn't exist
+    else if (response.status < 500) throw new Error();
+    return null;
+  }
+  const json = await response.json();
+  const id: string = json['id'];
+  // prettier-ignore
+  return `${id.substring(0, 8)}-${id.substring(8, 12)}-${id.substring(12, 16)}-${id.substring(16, 20)}-${id.substring(20)}`;
+}