Build tool for @papit packages — opinionated, fast, and designed to work seamlessly inside any Papit-based workspace.

A web component that syntax-highlights and live-previews HTML, CSS and JavaScript. Tokenizing is done by @papit/lexer, with no external dependencies.

Project and package scaffolding tool for @papit — opinionated, consistent, and designed to kickstart Papit-based projects with the correct structure from day one.

core theme for the papit design-system

Base classes, decorators and an html template tag for building web components from scratch. Every papit component is built on it: reactive properties, attribute reflection, fine-grained DOM updates and form association, with no dependencies.

Discovers the packages in an npm workspace and the dependency graph between them, with build order, source and output folders, and published npm versions. The papit CLIs use it to decide which packages to act on.

the lexer used for a couple of packages including the @papit/html

Translation store for papit components and apps. Register languages inline or by URL, fetch them lazily on first use, and translate keys with variable interpolation. Components re-render when the language changes.

Positions its content on a chosen side of an anchor element with CSS anchor positioning, with an optional arrow marker. Use it as the floating layer of tooltips, menus and popovers.

An accessible wrapper around the native dialog element with slot composition and a built-in close button. It supports modal, non-modal and popover display modes.

A binary on/off toggle web component that participates in forms like a checkbox. Use it instead of a checkbox when the setting reads as on or off, such as notifications on.

Accessible dropdown menus, submenus and menubars built on the native Popover API, following the WAI-ARIA menu pattern. Use it for action menus and application menubars.

A resizable split-pane web component following the WAI-ARIA Window Splitter pattern. Users resize two panels by dragging the separator or with the keyboard, in horizontal or vertical orientation.

Hint bubble that appears next to a trigger on hover or focus, after a configurable delay. Connect it to any element with the popovertarget attribute.

Non-visual container that moves keyboard focus between its children with a roving tabindex. Wrap toolbars, button rows and lists in it to get arrow key, Home and End navigation.

An accessible, form-associated radio button web component following the WAI-ARIA Radio Group pattern.

Renders SVG icons inline from a URL, a spritesheet symbol or a registered string, and country flags from a two-letter code. Fetched icons are shared between instances and can be cached in localStorage.

An accessible, form-associated checkbox web component with an indeterminate state.

A positioned overlay built on the native Popover API and CSS Anchor Positioning. Open it from any trigger with the standard popovertarget attribute, no JavaScript needed.

Accessible tree view for nested lists such as file explorers and navigation, following the WAI-ARIA tree pattern. Supports expand and collapse, single or multiple selection, full keyboard navigation and typeahead.