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# `@masknet/type/no-instanceof-wrapper`

Disallow `instanceof` for wrapper objects

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## Rule Details

### :x: Incorrect

```ts
x instanceof Array;
x instanceof BigInt;
x instanceof Boolean;
x instanceof Function;
x instanceof Number;
x instanceof Object;
x instanceof String;
x instanceof Symbol;
```

### :white_check_mark: Correct

```ts
Array.isArray(x);
typeof x === "bigint";
typeof x === "boolean";
typeof x === "function";
typeof x === "number";
typeof x === "object";
typeof x === "string";
typeof x === "symbol";
```

## Attributes

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- [x] :white_check_mark: Recommended
- [x] :wrench: Fixable
- [ ] :bulb: Suggestions
- [ ] :gear: Configurable
- [ ] :thought_balloon: Requires type information

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## Thanks

- <https://github.com/mysticatea/eslint-plugin>
- <https://github.com/sindresorhus/eslint-plugin-unicorn>