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

Test if a value is a regular expression string.

Test if a value is a string.

Command-line interface.

Read the entire contents of a file.

Read data from stdin.

Return a regular expression to match a newline character sequence.

Standard input.

Insert supplied variable values into a format string.

stdlib TypeScript type declarations.

Create a regular expression from a regular expression string.

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.

Create a string from a sequence of Unicode code points.

Replace search occurrences with a replacement string.

tap-producing test harness for node and browsers

Proxies nodejs require in order to allow overriding dependencies during testing.

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.