stdlib-js/time-day-of-year

Test if a value is a Date object.

Test if a value is a number having an integer value.

Test if a value is a string.

Command-line interface.

Read the entire contents of a file.

Insert supplied variable values into a format string.

Convert a string to lowercase.

Format an error message for production.

Check if the runtime is a web browser.

Boolean indicating if the current process is running on Windows.

Absolute pathname of the executable which started the current Node.js process.

Left pad a string.

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 cases including unit tests, server side functional tests and browser tests. Built for scale

Minimal TAP output formatter.

Test if a value corresponds to a leap year in the Gregorian calendar.

Determine the number of days in a month.