Change to esm module (#11)

* Change to esm module

* Switch to native esm module

* Fix tests

package.json

@@ -3,6 +3,13 @@
   "version": "3.0.0",
   "description": "Socket.io wrapper to enable client to client communications like RPC and pub/sub. Inspired by WAMP protocol.",
   "main": "lib/index.js",
+  "type": "module",
+  "exports": {
+    ".": "./src/index.js",
+    "./client": "./src/client.js",
+    "./server": "./src/server.js",
+    "./package.json": "./package.json"
+  },
   "keywords": [
     "socket",
     "client",
@@ -11,32 +18,23 @@
   "author": "Jérémie Pardou",
   "license": "ISC",
   "bin": {
-    "wire": "lib/cli.es5.js",
-    "wire.io": "lib/cli.es5.js"
+    "wire": "src/cli.js",
+    "wire.io": "src/cli.js"
   },
   "scripts": {
-    "clean": "rm ./lib/ -r",
     "test": "jest --watch",
-    "coverage": "jest --coverage",
-    "build": "babel src --out-dir lib --ignore '**/*.test.js' --ignore '**/app.js'",
-    "shebang": "echo '#!/usr/bin/env node' > lib/cli.es5.js && cat lib/cli.js >> lib/cli.es5.js",
-    "prepare": "npm run build && npm run shebang",
-    "dev": "nodemon src/cli.js --exec babel-node",
-    "start": "babel-node src/cli.js",
+    "coverage": "jest --coverage --detectOpenHandles ",
+    "dev": "nodemon src/cli.js",
+    "start": "node src/cli.js",
     "ci": "start-server-and-test start http-get://localhost:4000 coverage",
     "version": "git changelog -n -t $npm_package_version && git add CHANGELOG.md"
   },
   "dependencies": {
     "nanoid": "^3.1.20"
   },
   "devDependencies": {
-    "@babel/cli": "^7.14.3",
-    "@babel/core": "^7.14.3",
-    "@babel/node": "^7.14.2",
-    "@babel/preset-env": "^7.14.2",
-    "babel-jest": "^26.6.3",
     "jest": "^26.6.3",
-    "jest-transform-stub": "^2.0.0",
+    "jest-esm-transformer": "^1.0.0",
     "nodemon": "^2.0.4",
     "prettier": "^2.0.5",
     "retry-assert": "^1.0.0",
@@ -51,8 +49,7 @@
   },
   "jest": {
     "transform": {
-      ".+\\.(css|styl|less|sass|scss|png|jpg|ttf|woff|woff2)$": "jest-transform-stub",
-      "^.+\\.[t|j]sx?$": "babel-jest"
+      ".js": "jest-esm-transformer"
     }
   }
 }

src/cli.js

@@ -1,4 +1,4 @@
-import startServer from './startServer';
+import startServer from './startServer.js';
 import dotenv from 'dotenv';
 
 dotenv.config();

src/client.test.js

@@ -34,22 +34,24 @@ describe('Client', () => {
   });
 
   afterEach(async () => {
-    // Cleanup
-    if (socket1.connected) {
-      socket1.disconnect();
-    }
-    if (socket2.connected) {
-      socket2.disconnect();
-    }
-    if (socket3.connected) {
-      socket3.disconnect();
-    }
-
-    await retry(
-      () => !(socket1.connected && socket2.connected && socket3.connected)
-    )
-      .withTimeout(3000)
-      .untilTruthy();
+    const disco = () => {
+      // Cleanup
+      if (socket1 && socket1.connected) {
+        socket1.disconnect();
+        return false;
+      }
+      if (socket2 && socket2.connected) {
+        socket2.disconnect();
+        return false;
+      }
+      if (socket3 && socket3.connected) {
+        socket3.disconnect();
+        return false;
+      }
+      return true;
+    };
+
+    await retry(disco).withTimeout(3000).untilTruthy();
   });
 
   it('connect to room', async () => {

src/index.js

@@ -1,4 +1,4 @@
-import handleWire from './server';
-import joinWire from './client';
+import handleWire from './server.js';
+import joinWire from './client.js';
 
 export { handleWire, joinWire };

src/startServer.js

@@ -1,9 +1,9 @@
 import express from 'express';
 import { createServer } from 'http';
-import io from 'socket.io';
+import { Server } from 'socket.io';
 import cors from 'cors';
 
-import { handleWire } from '.';
+import { handleWire } from './server.js';
 
 const startServer = ({ socketIOConfig = {}, port = 4000 }) => {
   var app = express();
@@ -19,7 +19,7 @@ const startServer = ({ socketIOConfig = {}, port = 4000 }) => {
 
   app.use(cors(corsOption));
 
-  const ioServer = io(http, {
+  const ioServer = new Server(http, {
     ...socketIOConfig,
   });