/* Build alef component comilper to WASM package */

import { encode } from "https://deno.land/std@0.83.0/encoding/base64.ts";
import { ensureDir } from "https://deno.land/std@0.83.0/fs/ensure_dir.ts";

if (import.meta.main) {
  await ensureDir("./dist");
  Deno.chdir("./wasm");
  const p = Deno.run({
    cmd: ["wasm-pack", "build", "--target", "web"],
    stdout: "inherit",
    stderr: "inherit",
  });
  await p.status();
  p.close();
  const wasmData = await Deno.readFile("./pkg/alef_compiler_wasm_bg.wasm");
  const data64 = encode(wasmData);
  await Deno.writeTextFile(
    "../dist/wasm.js",
    [
      `const data = "${data64}";`,
      `export default () => Uint8Array.from(atob(data), v => v.charCodeAt(0))`,
    ].join("\n"),
  );
  await Deno.copyFile("./pkg/alef_compiler_wasm.js", "../dist/wasm-pack.js");
}