taglib-wasm/dist/src/deno-compile.js

TagLib for TypeScript platforms: Deno, Node.js, Bun, Electron, browsers, and Cloudflare Workers

import { TagLib } from "./taglib.js";
function isDenoCompiled() {
  return typeof Deno !== "undefined" && // @ts-ignore: Deno global is only available in Deno runtime
  typeof Deno.mainModule === "string" && // @ts-ignore: Deno global is only available in Deno runtime
  Deno.mainModule.includes("deno-compile://");
}
async function initializeForDenoCompile(embeddedWasmPath = "./taglib.wasm") {
  if (isDenoCompiled()) {
    try {
      const wasmUrl = new URL(embeddedWasmPath, import.meta.url);
      const wasmBinary = await Deno.readFile(wasmUrl);
      return await TagLib.initialize({ wasmBinary });
    } catch (error) {
      console.warn(
        `Could not load embedded WASM from ${embeddedWasmPath}:`,
        error
      );
      console.warn("Falling back to network fetch (requires --allow-net)");
    }
  }
  return await TagLib.initialize();
}
async function prepareWasmForEmbedding(outputPath = "./taglib.wasm") {
  try {
    const possiblePaths = [
      new URL("../dist/taglib.wasm", import.meta.url),
      new URL("../build/taglib.wasm", import.meta.url),
      new URL("./node_modules/taglib-wasm/dist/taglib.wasm", import.meta.url)
    ];
    let wasmData = null;
    let sourcePath = null;
    for (const path of possiblePaths) {
      try {
        wasmData = await Deno.readFile(path);
        sourcePath = path.pathname;
        break;
      } catch {
      }
    }
    if (!wasmData || !sourcePath) {
      throw new Error("Could not find taglib.wasm in expected locations");
    }
    await Deno.writeFile(outputPath, wasmData);
    console.log(`WASM file copied from ${sourcePath} to ${outputPath}`);
    console.log(
      `Include this file when compiling: deno compile --include ${outputPath} ...`
    );
  } catch (error) {
    const message = error instanceof Error ? error.message : String(error);
    throw new Error(`Failed to prepare WASM for embedding: ${message}`);
  }
}
export {
  initializeForDenoCompile,
  isDenoCompiled,
  prepareWasmForEmbedding
};