web_lib

wasm.ts (840B)

---

 import init_wasm, { type InitOutput } from "@radroots/events-codec-wasm";
 import type { NostrEventTags } from "../types/lib.js";
 
 let codec_wasm_init_promise: Promise<InitOutput> | null = null;
 
 export const ensure_codec_wasm = async (): Promise<void> => {
     if (!codec_wasm_init_promise) codec_wasm_init_promise = init_wasm();
     await codec_wasm_init_promise;
 };
 
 const is_string_array = (value: unknown): value is string[] =>
     Array.isArray(value) && value.every((item) => typeof item === "string");
 
 const is_tag_list = (value: unknown): value is NostrEventTags =>
     Array.isArray(value) && value.every(is_string_array);
 
 export const parse_tags_json = (value: string): NostrEventTags => {
     const parsed: unknown = JSON.parse(value);
     if (!is_tag_list(parsed)) throw new Error("invalid nostr tags");
     return parsed;
 };