Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

date-fns adapter for @kalyx/core — implements the DateAdapter contract using date-fns (timezone work is delegated to @kalyx/core's Intl-based utilities).

YAML 1.2 parser and serializer

ES2015 `Object.assign()` ponyfill

extend like a boss

Constant-time comparison of Buffers

[](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.a

Merge multiple streams into one stream in sequence or parallel.

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible

return list of CallSite objects from a captured stacktrace

No description provided.

Fast (and loose) selective `process.env` replacer using js-tokens instead of an AST

Normalize slashes in a file path to be posix/unix-like forward slashes. Also condenses repeat slashes to a single slash and removes and trailing slashes, unless disabled.

Buffers events from a stream until you are ready to handle them.

64-bit big-endian signed integer-to-string conversion

A stream that emits multiple other streams one after another.

process.nextTick but always with args

Use node's fs.realpath, but fall back to the JS implementation if the native one fails

Create a stream that emits events from multiple other streams

An implementation of WHATWG AbortController interface.