— Overall performance is above average.
— Slightly sloppy on filtering the third graph and zooming out.
— Long tap is not implemented.
— Bonus goal is completed, however zooming have some issues (the attached video #1).
— Graph #1 jitters on scrolling in some cases (reproduced on Samsung Galaxy S9, Android 9.0) – the attached video #2.

strange extra values in zoomed mode

no long tap support on labels

You will never see on the chart week day or month in expected by designs format. Just try to find somewhere "Saturday" or "November" etc. If this is so conceived, then I just think inattention to details.

Completely wrong zoom in/out animation

Only y-scaled graph should starts with the lowest visible value.

jerking pie chart when selecting one item

marker are cut for lower values

Pie chart: wrong timeline (navigator); wrong date selections and impossible to select just one day

Initial date range selection is not 6 Mar - 6 Apr (final month).
It is impossible to select less then almost a month on daily graphs.

Also, sorry! No points (on the lines while hover) transition between sibling nodes. In Zoomed mode bottom scale caret must shift with transition between days, but not between pixels. Filter buttons on chart 4 in zoomed mode by design should be positioned on the same place under the main chart instead small filter graph.

The percentage chart minimap doesn't finish the transition when a line is turned off. The transition gets finished when the selector is moved.

Y axes bottom values are changed with no transition

Sometimes the date scale labels disappear without a transition (watch the dates on the left on the video)

Invalid display polygones (area and bar charts) probably points intersections issue but text change animations looks fine

Wrong chart position after Zoom out

Unable to select time range by dragging in the preview area (outside of the current window).

Here is what I've found (Screenshot)

Now your turn https://contest.dev/chart-js/entry9

irregular the minimap with zoom on chart 5 - it should have a period of dates much less than all valid dates

also weird texts animation
no snapping

No good performance in Chart #3 (IE11). But solution is perfect. Good luck in competition.

On 2 graph, the lines don’t occupy the top and bottom positions

On 4 bonus, time starts at 3:00

Error on 3 bonus