tslint-config/test/only-arrow-functions/tslint.json

{
    "rules": {
        "only-arrow-functions": [true, "allow-declarations", "allow-named-functions"]
    },
    "meta": {
        "category": "typescript-specific",
        "description": "必须使用箭头函数，除非是单独的函数声明或是命名函数",
        "reason": "统一使用箭头函数，避免 `this` 指向问题"
    }
}