deno investigation

.github/workflows/test.yml

@@ -212,3 +212,28 @@ jobs:
         run: |
           cd python
           ./run_tests.sh
+
+  deno:
+    runs-on: ubuntu-latest
+    name: testing BullMQ with Deno
+
+    services:
+      redis:
+        image: redis:7-alpine
+        ports:
+          - 6379:6379
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Deno
+        uses: denoland/setup-deno@v1
+        with:
+          deno-version: v1.x
+
+      - name: Install Dependencies
+        run: set +e; deno cache tests/*.ts --allow-scripts --unstable-sloppy-imports; set -e
+
+      - name: Run Deno Tests
+        run: deno run ./tests/example_deno_test.ts --unstable-sloppy-imports

deno.json

@@ -0,0 +1,25 @@
+{
+  "imports": {
+    "events": "node:events",
+    "path": "node:path",
+    "fs": "https://deno.land/std@0.110.0/node/fs.ts",
+    "child_process": "node:child_process",
+    "worker_threads": "node:worker_threads",
+    "net": "node:net",
+    "util": "node:util",
+    "crypto": "node:crypto",
+    "url": "node:url",
+    "lodash": "https://raw.githubusercontent.com/lodash/lodash/4.17.21-es/lodash.js",
+    "msgpackr-extract@3.0.3": "npm:msgpackr-extract@3.0.3",
+    "process": "node:process",
+    "ioredis": "https://esm.sh/ioredis"
+  },
+  "compilerOptions": {
+    "strict": false,
+    "noImplicitAny": false,
+    "strictNullChecks": false,
+    "strictPropertyInitialization": false,
+    "allowJs": true
+  },
+  "nodeModulesDir": "auto"
+}

tests/example_deno_test.ts

@@ -0,0 +1,65 @@
+/**
+ * First we import Mocha and it's type definitions.
+ */
+// @deno-types="https://unpkg.com/@types/mocha@7.0.2/index.d.ts"
+import 'https://unpkg.com/mocha@7.2.0/mocha.js';
+/**
+ * Here I'm using the Deno `expect` library, but you can use
+ * any assertion library - including Deno's std testing library.
+ * See: https://deno.land/std/testing
+ */
+import { expect } from 'https://deno.land/x/expect@v0.2.1/mod.ts';
+
+/**
+ * Callback on completion of tests to ensure Deno exits with
+ * the appropriate status code.
+ */
+function onCompleted(failures: number): void {
+  if (failures > 0) {
+    Deno.exit(1);
+  } else {
+    Deno.exit(0);
+  }
+}
+
+/**
+ * Browser based Mocha requires `window.location` to exist.
+ */
+(window as any).location = new URL('http://localhost:0');
+
+/**
+ * In order to use `describe` etc. we need to set Mocha to `bdd`
+ * mode.
+ *
+ * We also need to set the reporter to `spec` (though other options
+ * are available) to prevent Mocha using the default browser reporter
+ * which requires access to a DOM.
+ */
+mocha.setup({ ui: 'bdd', reporter: 'spec' });
+
+/**
+ * Ensure there are no leaks in our tests.
+ */
+mocha.checkLeaks();
+
+/**
+ * Our example function under test
+ */
+function add(a: number, b: number): number {
+  return a + b;
+}
+
+/**
+ * We write our tests as usual!
+ */
+describe('add', () => {
+  it('should add two positive numbers correctly', () => {
+    expect(add(2, 3)).toEqual(5);
+  });
+});
+
+/**
+ * And finally we run our tests, passing the onCompleted function
+ * hook and setting some globals.
+ */
+mocha.run(onCompleted).globals(['onerror']);