Get the width and height of a video or image.

Generate fake image files and buffers. Useful for generating fixtures for unit tests for image libraries. Supports PNG, JPEG, GIF, WebP, SVG, and many other image formats.

Generate fake audio files and buffers. Useful for generating fixtures for unit tests for audio libraries. Supports WAV, MP3, M4A, Ogg, FLAC, and 9 other audio formats.

Generate fake video files and buffers. Useful for generating fixtures for unit tests for video libraries. Supports MP4, WebM, MKV, MOV, AVI, FLV, MPEG, 3GP, OGV, WMV, ASF, and MPEG-TS.

Returns true if the given value is an object created by the Object constructor.

Is the value an object, and not an array or null?

Capture screenshots programmatically. Cross-platform, with support for MacOS (Darwin), Windows, and Linux.

Expand deeply nested values from an object, with support for advanced features

Use property paths (`a.b.c`) get a nested value from an object.

Safely evaluate JavaScript (estree) expressions, sync and async.

Get the width and height of a video.

Detect the terminal program currently being used, with support for iTerm, Terminal.app, Hyper, iTerm2, ConEmu, Cmde,r Alacritty, Xterm, Terminator, Termux, Kitty, and others. Detection is based on …

Parse a Github URL into an object. Supports a wide variety of GitHub URL formats.

Dry is a new template engine and language, and is a superset of Shopify's Liquid, with first-class support for advanced inheritance features, and more. From the creators of Enquirer, Assemble, Rema…

Print regular expressions with syntax highlighting in the terminal. Useful for debugging, visually inspecting and understanding complex regex patterns.

Customized monokai theme for iterm. There are others, this one is based on https://github.com/jonschlinkert/sublime-monokai-extended

Node.js support for OpenZL, an open source data compression framework from Meta that offers lossless compression for structured data, designed to provide the performance of format-specific compress…

Make a shallow clone of an object, array or primitive.

The Model Context Grammar Protocol defines a simple, extensible, and non-deterministic grammar for specifying valid message types and their arrangements in exchanges with language models. This prot…

Smarter YAML front matter parser, used by metalsmith, Gatsby, Netlify, Assemble, mapbox-gl, phenomic, vuejs vitepress, TinaCMS, Shopify Polaris, Ant Design, Astro, hashicorp, garden, slidev, saber,…

Open a finder dialog window (finder prompt) programmatically.

Cross-platform utility to open a file or directory in the system's default file manager (Finder, Explorer, Nautilus, etc.)

Programmatically open a file dialog window (explorer) for picking files. Only works on Windows. Also see: open-finder-dialog, open-linux-file-dialog, and open-file-manager-dialog for other platforms.

Open a file dialog window programmatically to allow the user to select one or more files. Only works on Linux. No dependencies. Supports zenity (GNOME), kdialog (KDE), yad (Yet Another Dialog), qar…

Cross-platform library for opening a file manager dialog window programmatically on MacOS, Windows, or Linux.

A high-performance wrapper around Intl.Segmenter for efficient text segmentation. This class resolves memory handling issues seen with large strings and "maximum call stack exceeded" exceptions tha…

Resolve values based on a JSON schema. Supports conditionals and composition. Useful for configuration, preferences, LLM chat completions, etc.

Add context awareness to your apps and frameworks by safely evaluating user-defined conditional expressions. Useful for evaluating expressions in config files, prompts, key bindings, completions, t…