palantir/blueprint

Blueprint

Blueprint is a React-based UI toolkit for the web.

It is optimized for building complex, data-dense web interfaces for desktop applications which run in modern browsers. This is not a mobile-first UI toolkit.

Read the introductory blog post ▸

View the full documentation ▸

Try it out on CodeSandbox ▸

Read frequently asked questions (FAQ) on the wiki ▸

Changelog

Blueprint's change log and migration guides for major versions live on the repo's Github wiki.

Packages

This repository contains multiple projects in the packages/ directory that fall into 3 categories:

Libraries

These are the component libraries we publish to NPM.

• – Design system color variables.
• – Core styles & components.
• – Components for interacting with dates and times.
• – APIs for displaying icons (contains both SVG and icon font implementations).
• – Components for selecting items from a list.
• – Scalable & interactive spreadsheet-like table component.

Applications

These are hosted on GitHub Pages as static web applications:

• docs-app – Documentation site at blueprintjs.com/docs
• landing-app – Landing page at blueprintjs.com

These are used as development playground environments:

• demo-app – demo page that shows many components all on the same page in light and dark themes
• table-dev-app – demo page that supports manual testing of all table features

Build tooling

These packages define development dependencies and contain build configuration. They adhere to the standard NPM package layout, which allows us to keep clear API boundaries for build configuration and isolate groups of devDependencies. They are published to NPM in order to allow other Blueprint-related projects to use this infrastructure outside this monorepo.

• – Documentation theme for Documentalist data.
• – ESLint configuration used in this repo and recommended for Blueprint-related projects.
• – implementations for custom ESLint rules which enforce best practices for Blueprint usage.
• – various utility scripts for building Sass sources, linting Sass & TypeScript, generating Sass & Less variables, and optimizing icon SVGs.
• – implementations for custom stylelint rules which enforce best practices for Blueprint usage.
• – various utility functions used in Blueprint test suites.
• – Webpack build configuration for Blueprint projects.

Contributing

Looking for places to contribute to the codebase? First read the contribution guidelines, then check out the "help wanted" label.

Development

pnpm manages third-party and inter-package dependencies in this monorepo. Builds are orchestrated via Nx's task runner and NPM scripts. Lerna-Lite is used to prepare releases.

Prerequisites: Node.js v24.11+ (see version specified in .nvmrc), pnpm v10.x (see version specified in package.json)

One-time setup

First, ensure you have nvm (Node Version Manager) installed.

After cloning this repo, run:

1. nvm use to use the supported Node version for Blueprint development.
2. corepack enable to activate pnpm as the Node package manager.
3. pnpm install to install all dependencies for the monorepo.
   1. If seeing an error like "Error when performing the request ...", you may be using a VPN that needs to be disabled to install the dependencies.
4. If running on Windows:
   1. npm install -g windows-build-tools to install build tools globally
   2. Ensure bash is your configured script-shell by running:
      npm config set script-shell "C:\\Program Files\\git\\bin\\bash.exe"
      (reset this by running npm config delete script-shell)
5. pnpm verify to ensure you have all the build tooling working properly.
   1. There may currently be some errors when running this step, even though everything is set up properly, see https://github.com/palantir/blueprint/issues/6926 for more info.
6. (Optional) Run pnpm dev:demo to start the demo app and verify your setup is working.

Incorporating upstream changes

If you were previously in a working state and have just pulled new code from develop:

• If there were package dependency changes, run pnpm install at the root.
  • This command is very quick if there are no new things to install.
• Run pnpm compile to get the latest built versions of the library packages in this repo.
  • This command is quicker than pnpm verify since it doesn't build the application packages (docs-app,landing-app, etc.) or run tests

Developing libraries

There are a few ways to run development scripts, here they are listed from simplest to more advanced usage:

• Run pnpm dev from the root directory to watch changes across all packages and run the docs application with webpack-dev-server.
• Alternately, most libraries have a dev script to run the docs app and watch changes to only that package:
  • pnpm dev:core
  • pnpm dev:docs
  • pnpm dev:datetime
  • pnpm dev:demo
  • pnpm dev:select
  • pnpm dev:table
• Lastly, if you want to control exactly which dev scripts are run and view the console output in the cleanest way, we recommend opening separate terminal windows or splits and running local package dev tasks in each one. This is the recommended workflow for frequent contributors and advanced developers. For example, to test changes in the core and icons packages, you would run the following in separate terminals:
  • cd packages/core && pnpm dev
  • cd packages/icons && pnpm dev
  • cd packages/docs-app && pnpm dev

Updating documentation

Much of Blueprint's documentation lives inside source code as JSDoc comments in .tsx files and KSS markup in .scss files. This documentation is extracted and converted into static JSON data using documentalist. If you are updating documentation sources (not the docs UI code which lives in packages/docs-app or the docs theme in packages/docs-theme), you'll need to run pnpm compile from packages/docs-data to see changes reflected in the application. For simplicity, an alias script pnpm docs-data exists in the root to minimize directory hopping.

Updating icons

The One-time setup and Incorporating upstream changes steps should produce the generated source code in this repo used to build the icons documentation. This is sufficient for most development workflows.

If you are updating icons or adding new ones, you'll need to run pnpm compile in packages/icons to see those changes reflected before running any of the dev scripts.

Thanks

Thanks to Chromatic for providing the visual testing platform that helps us review UI changes and catch visual regressions.

License

This project is made available under the Apache 2.0 License.