chartjs
TimePoint support for time series
Feature Proposal
Time series are so common, it seems like a TimePoint or something similar should be a standard point type with a structure like { date: Date | string, y: number }.
As I understand it, you currently have to define a custom data point type and discover this syntax for the chart data: ChartData<'line', TimePoint[]>.
The chart options don't seem to be aware of the custom data point type. The tooltip label callback doesn't know about the custom data point type, so I had to use a ts-ignore in my code to ignore the issue.
I'm not a full TS or chart.js expert, so I may have missed something, but that's kind of the point. Time series is one of the most common chart types and should be easy to use with TypeScript.
Possible Implementation
Similar to BubblePoint, add a TimePoint type that supports Date objects and parsable date strings.
In ChartTypeRegistry:
https://github.com/chartjs/Chart.js/blob/84e7238a647623a3dd1f1c699752c4c364a68b1e/src/types/index.d.ts#L3668-L3675
, it defined defaultDataPoint: ScatterDataPoint | number | null
https://github.com/chartjs/Chart.js/blob/84e7238a647623a3dd1f1c699752c4c364a68b1e/src/types/index.d.ts#L237
https://github.com/chartjs/Chart.js/blob/84e7238a647623a3dd1f1c699752c4c364a68b1e/src/types/geometric.d.ts#L10-L13
But ScatterDataPoint should not be defined as Point. The field x in ScatterDataPoint should accept not only number but also string and Date (batter if it also support date object in packages listed in adapters) also. The library do accept Date or luxon.DateTime etc., but the type definition do not allow it.
