wip: swap yarn with pnpm etc

Author: vincentfrochot

package.json

@@ -5,50 +5,42 @@
   "type": "commonjs",
   "main": "chessground.js",
   "typings": "chessground.d.ts",
+  "exports": {
+    ".": "./dist/chessground.js",
+    "./*": "./dist/*.js"
+  },
+  "typesVersions": {
+    "*": {
+      "*": [
+        "dist/*"
+      ]
+    }
+  },
   "dependencies": {},
   "devDependencies": {
-    "@types/chai": "^4.2.12",
-    "@types/mocha": "^8.0.1",
-    "@typescript-eslint/eslint-plugin": "^4.32.0",
-    "@typescript-eslint/parser": "^4.32.0",
-    "browserify": "^16",
-    "chai": "^4.2.0",
-    "eslint": "^7",
-    "fancy-log": "^1.3.3",
-    "gulp": "^4",
-    "gulp-size": "^3",
-    "gulp-sourcemaps": "^2.6.4",
-    "gulp-terser": "^1",
-    "jsdom": "10.0.0",
-    "jsdom-global": "3.0.2",
-    "mocha": "^8.1.0",
-    "prettier": "^2",
-    "ts-node": "^8.10.2",
-    "tsify": "^4",
-    "typescript": "^4.4.4",
-    "vinyl-buffer": "^1.0.1",
-    "vinyl-source-stream": "^2",
-    "watchify": "^3.11.0"
+    "@typescript-eslint/eslint-plugin": "^7.7.0",
+    "@typescript-eslint/parser": "^7.7.0",
+    "@types/node": "20.12.2",
+    "esbuild": "^0.20.2",
+    "eslint": "^8.57.0",
+    "prettier": "^3.2.5",
+    "typescript": "^5.4.5"
   },
   "scripts": {
-    "prepare": "npm run compile",
-    "pretest": "npm run compile",
-    "test": "mocha -r ts-node/register -r jsdom-global/register 'tests/**/*.test.ts'",
-    "prepublish": "npm run compile",
-    "compile": "tsc",
-    "format": "prettier --write .",
+    "prepare": "$npm_execpath run compile",
+    "compile": "tsc --sourceMap --declaration",
     "lint": "eslint src/*.ts",
+    "format": "prettier --write .",
     "check-format": "prettier --check .",
-    "dev": "gulp dev",
-    "prod": "gulp prod"
+    "bundle": "esbuild src/chessground.ts --bundle --format=esm --outfile=dist/chessground.min.js --minify",
+    "dist": "$npm_execpath run compile && $npm_execpath run bundle"
   },
   "files": [
-    "/*.js",
-    "/*.d.ts",
-    "/*.js.map",
+    "/dist/*.js",
+    "/dist/*.d.ts",
+    "/dist/*.js.map",
     "/assets/*.css",
-    "/src/*.ts",
-    "!/gulpfile.js"
+    "/src/*.ts"
   ],
   "repository": "https://github.com/Mind-Sports-Games/chessground",
   "keywords": [