Test if an object has a specified property.

Test if a value is an array.

Test if a value is a boolean.

Test if a value is object-like.

Test if a value is a plain object.

Insert supplied variable values into a format string.

Return an array of an object's own enumerable property names.

Format an error message for production.

Create an array containing pseudorandom numbers drawn from a discrete uniform distribution.

Uniformly distributed pseudorandom numbers between 0 and 1.

tap-producing test harness for node and browsers

Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use ca

Minimal TAP output formatter.

Benchmark harness.