Remove the logic that computed an "optimal" tooltip format. Instead, always fallback to the `datetime` adapter format which is more efficient and stable. Additionally, remove the adapter `presets` API, which is not needed anymore.
If the container size shrank during chart resize, let's assume scrollbar appeared. So we resize again with the scrollbar visible effectively making chart smaller and the scrollbar hidden again. Because we are inside `throttled`, and currently `ticking`, scroll events are ignored during this whole 2 resize process. If we assumed wrong and something else happened, we are resizing twice in a frame (potential performance issue)
These methods shouldn't have been public since they are specific to the chart controller internal logic. Note that this scale custom merging will be removed in v3.
Merge `core/core.js` in `core/core.controller.js`, split default options next to their associated code and deprecate `Chart.types` (not sure what it was for).
Browserify isn't optimal bundling Chart.js because it adds too many internal wrappers, doesn't handle external/global dependencies and doesn't provide a way to generate ESM builds. Therefore, it seems the right choice to switch to rollup, so move all the build process in `rollup.config.js` and make Gulp to execute `rollup -c`.
We also had to switch to Terser instead of UglifyJS because this last one contains a breaking bug. Note that tests now use the exact same rollup config as our builds (the minified one) to ensure that the bundling and minification steps don't break anything. Finally, replace the `gulp watch` task by `gulp build --watch` to be consistent with the other `unittest` and `docs` watching syntax.
This changes the behavior of `autoSkip` so that it does not force the
display of the last tick. If the last tick can be displayed with equal
spacing to the rest of the ticks, it will be. Otherwise, it is not.
- Remove `Math.round` in the category scale code
- Add `helpers._alignPixel` to align grid/tick/axis border lines
- Fix grid/tick/axis border line calculation
- Add a check of the width of the axis border
- Refactor core.scale code
`controllers.*.js` and `core.datasetController.js` are now importable (no more function export), that's why there is so many changes mainly due to one indentation level removed. Split code for `bar/horizontalBar` and `doughnut/pie` in separate files, added a global controllers import (`src/controllers/index.js`) and add tests to check that all dataset controllers are correctly registered under `chart.controllers.{type}`.
