no-instanceof-wrapper.md

Disallow 'instanceof' for wrapper objects (no-instanceof-wrapper)

Rule Details

Examples of incorrect code for this rule:

/*eslint no-instanceof-wrapper: "error"*/

x instanceof Boolean
x instanceof Number
x instanceof String
x instanceof Object
x instanceof Function
x instanceof Symbol

Examples of correct code for this rule:

/*eslint no-instanceof-wrapper: "error"*/

typeof x === "boolean"
typeof x === "number"
typeof x === "string"
typeof x === "object"
typeof x === "function"
typeof x === "symbol"