JSPM

Test if a value is a string in snake case.

Test if a value is a binary string.

Test if an object's own or inherited property has an accessor descriptor.

Test if a value is a 2-dimensional ndarray-like object containing double-precision floating-point numbers.

Test if an object's own or inherited property is write-only.

Test if a value is an ndarray-like object containing single-precision complex floating-point numbers.

Test if a value is an array-like object containing only symbols.

Test if a value is an array-like object containing only negative numbers.

Test if a value is an arrow function.

Test if an object's own or inherited property is enumerable.

Test if a value is an array-like object containing only objects.

Test if a value is the current year.

Boolean indicating if the current environment is a touch device.

Test if a value is a camelcase string.

Test if a string is a well-formed string.

Test if an object's own property is write-only.

Test if a value is a lowercase string.

Test if two arguments have the same type.

Check if an environment is little endian.

Test if a value is a UNC path.

Test whether a string contains only hexadecimal digits.

Test if a value is a string in snake case.

Test if a value is an ndarray-like object containing double-precision complex floating-point numbers.

Test if a value is a number having a nonnegative finite value.

Test if a value is a camelcase string.

Test if a value is an array-like object containing only null values.

Check if running in a Node.js REPL environment.

Test whether a string matches a Node.js built-in module name.

Test whether a character belongs to the ASCII character set and whether this is true for all characters in a provided string.

Boolean indicating if the current environment is a mobile device.

Test if a value is a 2-dimensional ndarray-like object containing double-precision complex floating-point numbers.

Test if a value is a duration string.

Test if a value is an empty array-like object.

Test if a value is a 2-dimensional ndarray-like object containing single-precision floating-point numbers.

Test if a value is a string in Pascal case.

Test if a value is a URIError object.

Test if a value is an array-like object containing only nonpositive numbers.

Test if a value is a ragged nested array

Test if a value is generator object-like.

Test if a value is a non-symmetric matrix.

Test if an object's own property is configurable.

Test if an object's own property has an accessor descriptor.

Test if a value is a domain name.

Test if two arguments are strictly equal.

Test if a value is a number having a nonpositive finite value.

Check if the runtime is the main Electron process.

Test if a value is an array-like object containing only negative integers.

Test if a value is a startcase string.

Test if a value is a regular expression string.

Test whether a value is an absolute URI.

Test if two values are both Date objects corresponding to the same date and time.

Test if a value is an uppercase string.

Test if an object's own or inherited property is readable.

Test if an object's own property is readable.

Test if an object's own or inherited property is read-only.

Test if a value is an array-like object of booleans.

Test whether a value is a relative URI.

Test whether a value is an absolute HTTP(S) URI.

Test if two arguments are both double-precision complex floating-point numbers and have the same value.

Test if two arguments are both BooleanArrays and have the same values.

Test if an object's own or inherited property has a data descriptor.

Test if an object's own and inherited property is readable and writable.

Check if the process is running in a Docker container.

Test if an object's own property has a data descriptor.

Test if a value is an array-like object containing only JavaScript primitives.

Test if a value is an array-like object containing only nonnegative numbers.

Test if a value is a valid typed array length.

Test whether a value is a property key.

Test if a value is a number having a finite negative value.

Test if a value is a 2-dimensional ndarray-like object containing single-precision complex floating-point numbers.

Test if a value is an EvalError object.

Test if a value is an email address.