Playground bug: import triggers exceptions

In the following case (Playground link), the module is not imported:

import { type Assert, type Equal, type Not } from 'asserttt';

// Argument of Assert is an error and should be underlined
type _ = Assert<Equal<
  1,
  3
>>;

Several uncaught Promise rejections happen (Chrome/Mac, Safari/Mac, Firefox/Mac):

workerMain.ts:144 Uncaught (in promise) DataCloneError: Failed to execute 'postMessage' on 'DedicatedWorkerGlobalScope': ()=>({moduleReference:r,mode:i,packageName:o===r?void 0:o}) could not be cloned.
    at workerMain.ts:144:23
    at Object.sendMessage (simpleWorker.ts:474:5)
    at L._send (simpleWorker.ts:295:17)
    at simpleWorker.ts:247:9
(anonymous) @ workerMain.ts:144
sendMessage @ simpleWorker.ts:474
_send @ simpleWorker.ts:295
(anonymous) @ simpleWorker.ts:247
Promise.then
_handleRequestMessage @ simpleWorker.ts:246
_handleMessage @ simpleWorker.ts:209
handleMessage @ simpleWorker.ts:178
onmessage @ simpleWorker.ts:482
self.onmessage @ workerMain.ts:147
workerMain.ts:144 Uncaught (in promise) DataCloneError: Failed to execute 'postMessage' on 'DedicatedWorkerGlobalScope': ()=>({moduleReference:r,mode:i,packageName:o===r?void 0:o}) could not be cloned.
    at workerMain.ts:144:23
    at Object.sendMessage (simpleWorker.ts:474:5)
    at L._send (simpleWorker.ts:295:17)
    at simpleWorker.ts:247:9
(anonymous) @ workerMain.ts:144
sendMessage @ simpleWorker.ts:474
_send @ simpleWorker.ts:295
(anonymous) @ simpleWorker.ts:247
Promise.then
_handleRequestMessage @ simpleWorker.ts:246
_handleMessage @ simpleWorker.ts:209
handleMessage @ simpleWorker.ts:178
onmessage @ simpleWorker.ts:482
self.onmessage @ workerMain.ts:147
workerMain.ts:144 Uncaught (in promise) DataCloneError: Failed to execute 'postMessage' on 'DedicatedWorkerGlobalScope': ()=>({moduleReference:r,mode:i,packageName:o===r?void 0:o}) could not be cloned.
    at workerMain.ts:144:23
    at Object.sendMessage (simpleWorker.ts:474:5)
    at L._send (simpleWorker.ts:295:17)
    at simpleWorker.ts:247:9
(anonymous) @ workerMain.ts:144
sendMessage @ simpleWorker.ts:474
_send @ simpleWorker.ts:295
(anonymous) @ simpleWorker.ts:247
Promise.then
_handleRequestMessage @ simpleWorker.ts:246
_handleMessage @ simpleWorker.ts:209
handleMessage @ simpleWorker.ts:178
onmessage @ simpleWorker.ts:482
self.onmessage @ workerMain.ts:147
tsMode.js:8 Uncaught (in promise) Error: Could not find source file: 'file:///file%3A///node_modules/asserttt/package.json'.
    at R (tsWorker.js:396:6471)
    at Object.K [as getSyntacticDiagnostics] (tsWorker.js:396:12131)
    at Du.getSyntacticDiagnostics (tsWorker.js:54410:2643)
    at L.$fmr (workerMain.js:29:82744)
    at v._handleMessage (workerMain.js:29:62387)
    at Object.handleMessage (workerMain.js:29:61908)
    at L._handleRequestMessage (workerMain.js:29:58659)
    at L._handleMessage (workerMain.js:29:58109)
    at L.handleMessage (workerMain.js:29:57722)
    at v.onmessage (workerMain.js:29:62006)
_handleReplyMessage @ simpleWorker.ts:231
_handleMessage @ simpleWorker.ts:207
handleMessage @ simpleWorker.ts:178
(anonymous) @ simpleWorker.ts:344
S.onmessage @ defaultWorkerFactory.ts:153
tsMode.js:8 Uncaught (in promise) Error: Could not find source file: 'file:///file%3A///node_modules/asserttt/dist/src/asserttt.d.ts'.
    at R (tsWorker.js:396:6471)
    at Object.K [as getSyntacticDiagnostics] (tsWorker.js:396:12131)
    at Du.getSyntacticDiagnostics (tsWorker.js:54410:2643)
    at L.$fmr (workerMain.js:29:82744)
    at v._handleMessage (workerMain.js:29:62387)
    at Object.handleMessage (workerMain.js:29:61908)
    at L._handleRequestMessage (workerMain.js:29:58659)
    at L._handleMessage (workerMain.js:29:58109)
    at L.handleMessage (workerMain.js:29:57722)
    at v.onmessage (workerMain.js:29:62006)
_handleReplyMessage @ simpleWorker.ts:231
_handleMessage @ simpleWorker.ts:207
handleMessage @ simpleWorker.ts:178
(anonymous) @ simpleWorker.ts:344
S.onmessage @ defaultWorkerFactory.ts:153

Riproduci il malfunzionamento con l’esempio TypeScript Playground collegato, quindi analizza i percorsi workerMain.ts e simpleWorker.ts mostrati nelle stack trace, insieme a tsMode.js. Il lavoro è concluso quando l’import viene risolto e l’esempio non produce più errori DataCloneError non gestiti né errori di file sorgente mancante.