JSPM

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.

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 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 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.