IS Packages

This package will return true if an input is a string and return false if the input is not a string

Check if a Buffer/Uint8Array is a MP4 video

Check if an NPM package name is taken

micro check library

detect whether the browser supports webp

JSON isString method

JSON isStructure method

JSON is method

JSON isArray method

JSON isBoolean method

JSON isJSON method

JSON isNumber method

JSON isObject method

JSON isPrimitive method

Returns true if the given number is 10, false otherwise.

Returns true if regular expression A is equal to regex B. Compares the expression and flags.

Check whether a value is a `Generator` or `GeneratorFunction`. The `co` way, more strict checking. Always return boolean true or false, never null or undefined.

Returns false if the value of a property is either strictly false, or it's inverse is strictly true.

Check if a string contains the given substring

Is the date tomorrow?