type-of-is
Determine and test types using constructor or {}.toString
Determine and test types using constructor or {}.toString
A proper typeof that works with primitives, built-in value objects and those from other execution contexts.
Minimal JavaScript type checking library
Returns `true` if a value exists in the given string, array or object.
typeof number, or use a default
Check if the given value is of the particular type or types.
Determine if the JS environment has BigInt support.
Validate the type of arguments passed through the function.
typedescriptor identifies and describes types.
Determines the underlying data type of an input value.
🐊Putout plugin adds ability to remove useless typeof
A few reliable utils.
A jest matcher that allows you to test the expected type of a value
TypeScript typeof utility helper with no dependencies.
type inferer
Get the type of a variable or one unevaluated operand
retrieve the type of your value by using constructors when possible
Better 'typeof'. Detects real type of the objects like 'Array()', 'new Number(1)', 'new Boolean(true)', etc.
Validate the type of object's properties.
Reliable type checks for javascript primitives