Chart.js/docs/migration/v4-migration.md

# 4.x Migration Guide

Chart.js 4.0 introduces a number of breaking changes. We tried keeping the amount of breaking changes to a minimum. For some features and bug fixes it was necessary to break backwars compatibility, but we aimed to do so only when worth the benefit.

## End user migration

### Options

A number of changes were made to the configuration options passed to the `Chart` constructor. Those changes are documented below.

#### Specific changes

* The radialLinear grid indexable and scriptable options don't decrease the index of the specified grid line anymore.
* Ticks callback on time scale now receives timestamp instead of a formatted label.

#### Type changes
* The order of the `ChartMeta` parameters have been changed from `<Element, DatasetElement, Type>` to `<Type, Element, DatasetElement>`
Bug/Radial linear scale grid get correct options at index (#10010) * get correct options for index * update test * add initial migration guide 2022-08-03 02:32:02 +02:00			`# 4.x Migration Guide`

			`Chart.js 4.0 introduces a number of breaking changes. We tried keeping the amount of breaking changes to a minimum. For some features and bug fixes it was necessary to break backwars compatibility, but we aimed to do so only when worth the benefit.`

			`## End user migration`

			`### Options`

			A number of changes were made to the configuration options passed to the `Chart` constructor. Those changes are documented below.

			`#### Specific changes`

			`* The radialLinear grid indexable and scriptable options don't decrease the index of the specified grid line anymore.`
fix: pass timestamp to ticks callback (#10540) * fix: pass timestamp to ticks callback * docs: edit labelling page * docs: additions to the migration guide 2022-08-05 13:59:36 +02:00			`* Ticks callback on time scale now receives timestamp instead of a formatted label.`
Move parameter of TType in ChartMeta to first option (#10550) * move paramter of TType in ChartMeta to first option * add missing ChartMeta change * Add note in migration guide 2022-08-04 01:06:15 +02:00
			`#### Type changes`
			* The order of the `ChartMeta` parameters have been changed from `<Element, DatasetElement, Type>` to `<Type, Element, DatasetElement>`