feat: first release

.github/workflows/publish.yml

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+name: Publish
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - "deno.json"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup Deno
+        uses: maximousblk/setup-deno@v2 # Installs latest version
+
+      - run: deno task test
+      
+  publish:
+    runs-on: ubuntu-latest
+    needs: test
+
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Publish package
+        run: npx jsr publish

.github/workflows/test.yml

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+name: Test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup Deno
+        uses: maximousblk/setup-deno@v2 # Installs latest version
+
+      - run: deno task test

.vscode/settings.json

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+{
+  "deno.enable": true,
+  "editor.formatOnSave": true,
+  "editor.defaultFormatter": "denoland.vscode-deno",
+  "emeraldwalk.runonsave": {
+    "commands": [
+      {
+        "match": "\\.ts$",
+        "cmd": "deno lint ${file} --fix"
+      }
+    ]
+  }
+}

README.md

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+<p align="center">
+  <img src="https://user-images.githubusercontent.com/1998130/229430454-ca0f2811-d874-4314-b13d-c558de8eec7e.svg" />
+</p>
+
+# Event Emitter
+
+Introduces a `subscribe` extension on the latest popular [eventemitter3](https://github.com/primus/eventemitter3)
+solution.

deno.json

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+{
+  "name": "@valkyr/event-emitter",
+  "version": "1.0.0",
+  "exports": "./event-emitter.ts",
+  "imports": {
+    "eventemitter3": "npm:eventemitter3@5.0.1"
+  },
+  "exclude": [
+    ".vscode"
+  ],
+  "lint": {
+    "rules": {
+      "exclude": [
+        "no-explicit-any",
+        "require-await"
+      ]
+    }
+  },
+  "fmt": {
+    "lineWidth": 120
+  },
+  "tasks": {
+    "test": "deno test --allow-all --unstable-ffi",
+    "lint": "deno lint --fix"
+  }
+}

deno.lock

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+{
+  "version": "3",
+  "packages": {
+    "specifiers": {
+      "npm:eventemitter3@5.0.1": "npm:eventemitter3@5.0.1"
+    },
+    "npm": {
+      "eventemitter3@5.0.1": {
+        "integrity": "sha512-GWkBvjiSZK87ELrYOSESUYeVIc9mvLLf/nXalMOS5dYrgZq9o5OVkbZAVM06CVxYsCwH9BDZFPlQTlPA1j4ahA==",
+        "dependencies": {}
+      }
+    }
+  },
+  "remote": {},
+  "workspace": {
+    "dependencies": [
+      "npm:eventemitter3@5.0.1"
+    ]
+  }
+}

event-emitter.ts

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+import { EventEmitter as BaseEventEmitter } from "eventemitter3";
+
+export class EventEmitter<EventTypes extends ValidEventTypes = string | symbol> extends BaseEventEmitter<EventTypes> {
+  subscribe<T extends EventNames<EventTypes>>(
+    event: T,
+    fn: EventListener<EventTypes, T>,
+    destroy?: () => void,
+  ): {
+    unsubscribe: () => void;
+  } {
+    this.addListener(event, fn);
+    return {
+      unsubscribe: () => {
+        this.removeListener(event, fn);
+        if (destroy) {
+          destroy();
+        }
+      },
+    };
+  }
+}
+
+/*
+ |--------------------------------------------------------------------------------
+ | Types
+ |--------------------------------------------------------------------------------
+ */
+
+type EventListener<T extends ValidEventTypes, K extends EventNames<T>> = T extends string | symbol
+  ? (...args: any[]) => void
+  : (...args: ArgumentMap<Exclude<T, string | symbol>>[Extract<K, keyof T>]) => void;
+
+type EventNames<T extends ValidEventTypes> = T extends string | symbol ? T : keyof T;
+
+type ValidEventTypes = string | symbol | Record<string, unknown>;
+
+type ArgumentMap<T extends Record<string, unknown>> = {
+  [K in keyof T]: T[K] extends (...args: any[]) => void ? Parameters<T[K]> : T[K] extends any[] ? T[K] : any[];
+};