vite-plugin-wat/dist/index.js

A Vite plugin for WebAssembly Text Format.

// src/index.ts
import { relative, resolve } from "pathe";
import fse from "fs-extra";

// src/wabt.ts
import wabt from "wabt";
async function wat2wasm(wat) {
  const wabtModule = await wabt();
  const wasmModule = wabtModule.parseWat("", wat);
  return wasmModule.toBinary({}).buffer;
}

// src/index.ts
var WAT_ID_REG = /\.wat\?init$/;
function isWatId(id) {
  return WAT_ID_REG.test(id);
}
function resolveWasmId(watId, cwd, wasmDir) {
  return resolve(wasmDir, relative(cwd, watId).replace(WAT_ID_REG, ".wasm"));
}
var src_default = () => {
  const cwd = resolve("./");
  const storeDir = resolve(cwd, "node_modules", ".vite-plugin-wat");
  const wasmDir = resolve(storeDir, "wasm");
  return {
    name: "vite-plugin-wat",
    config: () => ({
      server: { watch: { ignored: [wasmDir] } }
    }),
    buildStart: () => {
      fse.removeSync(wasmDir);
    },
    resolveId: (id) => {
      return isWatId(id) ? id : void 0;
    },
    transform: async (code, id) => {
      if (!isWatId(id))
        return;
      const wasmId = resolveWasmId(id, cwd, wasmDir);
      await fse.ensureFile(wasmId);
      await fse.writeFile(wasmId, await wat2wasm(code));
      return `export { default } from '${wasmId}?init';`;
    }
  };
};
export {
  src_default as default
};