JSPM

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 if an object's own or inherited property is configurable.

Boolean indicating if the current environment is a mobile device.

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.

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 an object's own property is configurable.

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

Test if a value is a non-symmetric matrix.

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.

Check if an environment is big endian.

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

Test whether a value is a relative URI.

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 uppercase string.

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.