Add bindings to EventEmitter

Author: JordanMartinez

.github/workflows/ci.yml

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+name: CI
+
+# Run CI when a PR is opened against the branch `main`
+# and when one pushes a commit to `main`.
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: purescript-contrib/setup-purescript@main
+        with:
+          purescript: "0.15.7"
+          purs-tidy: "0.9.2"
+          psa: "0.8.2"
+          spago: "0.20.9"
+          psa: "0.7.2"
+
+      - name: Cache PureScript dependencies
+        uses: actions/cache@v2
+        with:
+          key: ${{ runner.os }}-spago-${{ hashFiles('**/*.dhall') }}
+          path: |
+            .spago
+            output
+
+      - name: Set up Node toolchain
+        uses: actions/setup-node@v2
+        with:
+          node-version: "16"
+
+      # Compile the library/project
+      #   censor-lib: ignore warnings emitted by dependencies
+      #   strict: convert warnings into errors
+      # Note: `purs-args` actually forwards these args to `psa`
+      - name: Build the project
+        run: |
+          spago build --purs-args "--censor-lib --strict"
+
+      - name: Run tests
+        run: |
+          spago test
+
+      - name: Check Formatting
+        run: |
+          purs-tidy check src test

.gitignore

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+/bower_components/
+/node_modules/
+/.pulp-cache/
+/output/
+/generated-docs/
+/.psc-package/
+/.psc*
+/.purs*
+/.psa*
+/.spago

README.md

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+# purescript-node-event-emitter
+
+Bindings for the [`event-emitter`](https://nodejs.org/api/events.html#class-eventemitter) class.

packages.dhall

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+let upstream =
+      https://github.com/purescript/package-sets/releases/download/psc-0.15.7-20230118/packages.dhall
+        sha256:973809c5d08a285ac10c6e66be04ca2c85a2d26493644e9196a6a411359f84b9
+
+in  upstream

spago.dhall

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+{ name = "node-event-emitters"
+, dependencies =
+  [ "effect"
+  , "functions"
+  , "prelude"
+  , "safe-coerce"
+  , "unsafe-coerce"
+  ]
+, packages = ./packages.dhall
+, sources = [ "src/**/*.purs" ]
+}

src/Node/EventEmitter.js

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+import events from "node:events";
+
+const newImpl = function () {
+  return new events.EventEmitter();
+}
+export { newImpl as new };
+
+export function listenersLengthImpl(emitter, event) {
+  return emitter.listeners(event).length;
+}
+
+export function setMaxListenersImpl(emitter, max) {
+  emitter.setMaxListeners(max);
+}
+
+export function onImpl(emitter, eventName, cb) {
+  emitter.on(eventName, cb);
+  return cb;
+}
+
+export function offImpl(emitter, eventName, cb) {
+  emitter.off(eventName, cb);
+}
+
+export function onceEventListener(emitter, eventName, cb) {
+  emitter.once(eventName, cb);
+}
+
+export function emitImpl(emitter, eventName) {
+  return function (a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) {
+    emitter.emit(eventName, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)
+  };
+}
+const undefined_ = undefined
+export { undefined_ as undefined }