Time
A linear time scale with real month and year lengths, seven view-mode presets (hour to year),
and a data granularity ('1d', '1h', '15min') that keeps every date a multiple of your
step.
ganttlane
An interactive Gantt chart for the web. Plans with thousands of tasks stay smooth, the schedule follows your work calendar, and a drag is one ChangeSet you can veto, confirm, save or cancel.
Work calendar
Weekends, named holidays, working-day exceptions and custom rules, with durations counted in working days or working time.
Dependencies and hierarchy
Four link types with lags and leads, cycle detection, propagation along links and to pinned children, parents, milestones and rows without a bar.
Editing
Drag to move, resize and set progress; draw links; edit sessions with Save and Cancel; undo and redo; async before-hooks; controlled and uncontrolled data.
Scrolling
An infinite timeline that extends without a visible jump, scrolling to a date, today or a task, and a sticky header.
Presentation
Light and dark themes through --gantt-* custom properties in @layer gantt, safe tooltip
content, localisable strings, and ReactNode slots in React.
Packages
Section titled “Packages”@ganttlane/coreHeadless core: dates, work calendar, time scale, scheduling, layout, state. No DOM.
@ganttlane/domVanilla DOM renderer, createGantt, and the default CSS theme.
@ganttlane/reactReact components and hooks over the vanilla renderer (React 18.3 and 19).