TypeError [Error]: Cannot destructure property 'mod' of 'threads.workerData' as it is undefined. at workerThread

[chanmathew]

Hi @eshaz,

I have a project that is using the mpg123-decoder package (tried both 0.4.9 and 0.4.10), which seems to rely on @eshaz+web-worker@1.2.1 as a dependency, and the type error is causing my project builds to fail:

node:internal/event_target:1010
  process.nextTick(() => { throw err; });
                           ^
TypeError [Error]: Cannot destructure property 'mod' of 'threads.workerData' as it is undefined.
    at workerThread (/Users/mathew/Dev/talewind-app/node_modules/.pnpm/@eshaz+web-worker@1.2.1/node_modules/@eshaz/web-worker/cjs/node.js:131:5)
    at Object.<anonymous> (/Users/mathew/Dev/talewind-app/node_modules/.pnpm/@eshaz+web-worker@1.2.1/node_modules/@eshaz/web-worker/cjs/node.js:67:56)
    at Module._compile (node:internal/modules/cjs/loader:1254:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1308:10)
    at Module.load (node:internal/modules/cjs/loader:1117:32)
    at Module._load (node:internal/modules/cjs/loader:958:12)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/translators:169:29)
    at ModuleJob.run (node:internal/modules/esm/module_job:194:25)
Emitted 'error' event on Worker instance at:
    at [kOnErrorMessage] (node:internal/worker:290:10)
    at [kOnMessage] (node:internal/worker:301:37)
    at MessagePort.<anonymous> (node:internal/worker:202:57)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:735:20)
    at exports.emitMessage (node:internal/per_context/messageport:23:28)

Seems like the root cause is in @eshaz+web-worker@1.2.1/node_modules/@eshaz/web-worker/cjs/node.js:131:5:

function workerThread() {
  let {
    mod,
    name,
    type
  } = threads.workerData;
  if (!mod) return mainThread();

Seems like this should fix it:

  let {
    mod,
    name,
    type
  } = threads.workerData || {};

Would you be able to push a fix for the destructuring? Thank you.