copied set implementations from MultiFlag JS

node/package.json

@@ -0,0 +1,53 @@
+{
+  "name": "multiflag",
+  "version": "2.0.0",
+  "description": "flag/bitflag helper",
+  "main": "index.js",
+  "scripts": {
+    "build": "tsup",
+    "postbuild": "cp package.json README.md ../LICENSE dist",
+    "test": "jest",
+    "type-check": "tsc --noEmit",
+    "format": "prettier --write src/ tests/"
+  },
+  "tsup": {
+    "entry": ["src/index.ts"],
+    "splitting": false,
+    "dts": true,
+    "minify": true,
+    "sourcemap": true,
+    "clean": true
+  },
+  "jest": {
+    "preset": "ts-jest",
+    "testEnvironment": "node",
+    "moduleNameMapper": {
+        "~": "<rootDir>/src/index.ts"
+    },
+    "collectCoverageFrom": ["src/**/*.ts"],
+    "coverageReporters": [ ["cobertura", {"file": "coverage.xml"}] ]
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/louisdevie/multiflag.git"
+  },
+  "keywords": [
+    "flag",
+    "bitflag"
+  ],
+  "author": "Louis DEVIE",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/louisdevie/multiflag/issues"
+  },
+  "homepage": "https://github.com/louisdevie/multiflag#readme",
+  "devDependencies": {
+    "@types/jest": "^29.5.14",
+    "jest": "^29.7.0",
+    "prettier": "^3.5.3",
+    "ts-jest": "^29.3.2",
+    "ts-node": "^10.9.2",
+    "tsup": "^8.3.5",
+    "typescript": "^5.8.3"
+  }
+}