Update to coincident v2

.gitignore

@@ -130,3 +130,5 @@ env.yml
 
 # Jupyterlite cache
 .jupyterlite.doit.db
+_output
+

package.json

@@ -60,7 +60,7 @@
         "@jupyterlite/server": "^0.2.0 || ^0.3.0 || ^0.4.0",
         "@lumino/coreutils": "^2",
         "@lumino/signaling": "^2",
-        "coincident": "^1.2.3"
+        "coincident": "^2.0.0"
     },
     "devDependencies": {
         "@jupyterlab/builder": "^4.1.0",

src/web_worker_kernel.ts

@@ -2,7 +2,10 @@
 // Copyright (c) JupyterLite Contributors
 // Distributed under the terms of the Modified BSD License.
 
-import coincident from 'coincident';
+// @ts-expect-error - no types available
+import coincident from 'coincident/main';
+
+const { Worker: CoincidentWorker } = coincident();
 
 import { ISignal, Signal } from '@lumino/signaling';
 import { PromiseDelegate } from '@lumino/coreutils';
@@ -48,14 +51,17 @@ export class WebWorkerKernel implements IKernel {
     this._kernelspec = kernelspec;
     this._contentsManager = contentsManager;
     this._sendMessage = sendMessage;
-    this._worker = new Worker(new URL('./worker.js', import.meta.url), {
-      type: 'module'
-    });
 
+    const worker = new CoincidentWorker(
+      new URL('./worker.js', import.meta.url),
+      {
+        type: 'module'
+      }
+    );
+    this._worker = worker;
+    this._remote = worker.proxy;
     this._worker.onmessage = this._processWorkerMessage.bind(this);
 
-    this._remote = coincident(this._worker) as IXeusKernel;
-
     this.setupFilesystemAPIs();
 
     this._remote.initialize(this._kernelspec, PageConfig.getBaseUrl());

src/worker.ts

@@ -2,7 +2,8 @@
 // Copyright (c) JupyterLite Contributors
 // Distributed under the terms of the Modified BSD License.
 
-import coincident from 'coincident';
+// @ts-expect-error - no types available
+import coincident from 'coincident/worker';
 
 import {
   ContentsAPI,
@@ -19,7 +20,7 @@ declare function createXeusModule(options: any): any;
 
 globalThis.Module = {};
 
-const workerAPI = coincident(self) as typeof globalThis;
+const { proxy: workerAPI } = await coincident();
 
 /**
  * An Emscripten-compatible synchronous Contents API using shared array buffers.

yarn.lock

@@ -472,7 +472,7 @@ __metadata:
     "@types/react-addons-linked-state-mixin": ^0.14.22
     "@typescript-eslint/eslint-plugin": ^6.1.0
     "@typescript-eslint/parser": ^6.1.0
-    coincident: ^1.2.3
+    coincident: ^2.0.0
     css-loader: ^6.7.1
     eslint: ^8.36.0
     eslint-config-prettier: ^8.8.0
@@ -954,13 +954,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ungap/with-resolvers@npm:^0.1.0":
-  version: 0.1.0
-  resolution: "@ungap/with-resolvers@npm:0.1.0"
-  checksum: ac0c6234414b87ec26e9603c5e57f6ae48477ccc901841e725e820bc026367987cc82dbdb8c702e058179dadbd16578c0fcc607d2122e72d9fe91373bade126c
-  languageName: node
-  linkType: hard
-
 "@webassemblyjs/ast@npm:1.12.1, @webassemblyjs/ast@npm:^1.12.1":
   version: 1.12.1
   resolution: "@webassemblyjs/ast@npm:1.12.1"
@@ -1517,19 +1510,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"coincident@npm:^1.2.3":
-  version: 1.2.3
-  resolution: "coincident@npm:1.2.3"
+"coincident@npm:^2.0.0":
+  version: 2.0.0
+  resolution: "coincident@npm:2.0.0"
   dependencies:
-    "@ungap/structured-clone": ^1.2.0
-    "@ungap/with-resolvers": ^0.1.0
     gc-hook: ^0.3.1
-    proxy-target: ^3.0.2
-    ws: ^8.16.0
-  dependenciesMeta:
-    ws:
-      optional: true
-  checksum: 21c44d9d74be393b12d6f91c885c8b6c640dce570b01b5d5156327488390c858de8e40c0af08763e3cd7041bcf32bee70c058a1b24aa25b145376a92b1c520a3
+    js-proxy: ^0.4.3
+    sabayon: ^0.5.0
+  checksum: 95c71cdb33787ab8737cd084eb984ce15076f71bc8590fb565e892e624a6f0e7aa7eef00e3edace31e5f5e12938e91631041aa0f3f9a7aef8f8b1a100527b9a7
   languageName: node
   linkType: hard
 
@@ -3067,6 +3055,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"js-proxy@npm:^0.4.3":
+  version: 0.4.3
+  resolution: "js-proxy@npm:0.4.3"
+  dependencies:
+    gc-hook: ^0.3.1
+    proxy-target: ^3.0.2
+  checksum: d97c54dcf725523090973d39741edb3154034b542dfb88f8374b729cd98fa7d1bb2e0e4f59e74ec64126be10a53601ea97517baddbdf566ecb744bfe99edb506
+  languageName: node
+  linkType: hard
+
 "js-tokens@npm:^4.0.0":
   version: 4.0.0
   resolution: "js-tokens@npm:4.0.0"
@@ -4222,6 +4220,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"sabayon@npm:^0.5.0":
+  version: 0.5.0
+  resolution: "sabayon@npm:0.5.0"
+  bin:
+    sabayon: cli.cjs
+  checksum: 2ca246ae483cbd49d147c55d32bde13fff370a713f3c00c122823ad9c395db1a5e8411a64f0807b9a8234ccd989750f7f428de7d08073fecc488d44dd038fe48
+  languageName: node
+  linkType: hard
+
 "safe-array-concat@npm:^1.1.2":
   version: 1.1.2
   resolution: "safe-array-concat@npm:1.1.2"
@@ -5373,7 +5380,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ws@npm:^8.11.0, ws@npm:^8.16.0":
+"ws@npm:^8.11.0":
   version: 8.17.0
   resolution: "ws@npm:8.17.0"
   peerDependencies: