Are you interested in any of these features I've made for kline to be more complete and usable?

[timmye]

Thanks for making v9 open source, it was a great core package for me to build on for professional trading. I've based these on professional charting applications.

I've added many features separate to v9 to make it more complete and feature rich. If you're interested, I can share the list of features:

X-axis: calendar/timezone:
Traders have real and reliable date ticks and labels, time/date resolution based on chart timeframe:

• ticks snap to real boundaries (week→Sun, month→1st, quarter, year). Δ kline uses flat interval-based ticks; v10 still has none.
• Timezone feature.
• Timezone-aware labels — Intl.DateTimeFormat, per-chart. Δ kline has zero timezone support (v9 had a bug; v10 none).

Consistent time windows & range:
Offering traders a fixed viewable history per resolution, i.e. 15min shows 1 week, 4h shows 3mths, 1day shows 1yr. This way when switching resolutions, data lookback is consistent.

• Fixed (Developing) vs Rolling window mode — calendar-aligned range (i.e. 3mths or 3mths plus this developing month) vs pure fixed lookback. Δ kline has no such concept.
• Default resolution→window pairing — 1h→1M, D→1Y, etc. Δ absent.
• Period range limits — per-timeframe max history fetch. ⬢
• Window-fit bar-space — candle width computed to fit the window (data-aware binary search). ⊘ kline has barSpace but no window-fit calc.

Custom overlays:
For chart markup and annotation:

• improved and new overlays for professional charting. (v10 brush covers some of this?)
• annotation, - editable (kline built-ins set ignoreEvent:true (can't interact); v10 status unverified.)
• arrow.
  ...more

Drawing system & persistence:

• Drawing coordinator and persistence.
• Undo/redo command stack
• Pinned drawings show across all timeframes (markup a level on one timeframe, pin it to show on all other timeframes)
  -Drawing context menu
  ...more

Measurement:

• Smart ruler - right click drag to show time and price delta between points.
  more...

Data:

• progressive scrolling in history
  ...more

Interaction:

• zoom, scroll changes
  ...more

[timmye]

@liihuu