Test if a value is a function.

Insert supplied variable values into a format string.

Format an error message for production.

Round a double-precision floating-point number toward negative infinity.

Compute the base `b` logarithm of a double-precision floating-point number.

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.