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CHANGELOG.md

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Changelog

Although v1.0.0 is not yet out, we do not expect many breaking changes. When there is one, however, it is documented clearly here.

Pre-v1.0.0 Breaking Changes

Nov 4, 2017 (PR #158): major breaking change

All Components must now have a Render method which returns vecty.ComponentOrHTML instead of the prior *vecty.HTML type.

This change allows for higher order components (components that themselves render components), which is useful for many more advanced uses of Vecty.

Upgrading

Upgrading most codebases should be trivial with a find-and-replace across all files.

From your editor:

  • Find ) Render() *vecty.HTML and replace with ) Render() vecty.ComponentOrHTML.

From the Linux command line:

git grep -l ') Render() \*vecty.HTML' | xargs sed -i 's/) Render() \*vecty.HTML/) Render() vecty.ComponentOrHTML/g'

From the Mac command line:

git grep -l ') Render() \*vecty.HTML' | xargs sed -i '' -e 's/) Render() \*vecty.HTML/) Render() vecty.ComponentOrHTML/g'

Obviously, you'll still need to verify that this only modifies your Component implementations. No other changes are needed, and no behavior change is expected for components that return *vecty.HTML (as the new vecty.ComponentOrHTML interface return type).

Oct 14, 2017 (PR #155): major breaking change

The function prop.Class(string) has been removed and replaced with vecty.Class(...string). Migrating users must use the new function and split their classes into separate strings, rather than a single space-separated string.

Oct 1, 2017 (PR #147): minor breaking change

MarkupOrChild and ComponentOrHTML can both now contain KeyedList (a new type that has been added)

Sept 5, 2017 (PR #140): minor breaking change

Package storeutil has been moved to github.com/gowasm/vecty/example/todomvc/store/storeutil import path.

Sept 2, 2017 (PR #134): major breaking change

Several breaking changes have been made. Below, we describe how to upgrade your Vecty code to reflect each of these changes.

On the surface, these changes may appear to be needless or simple API changes, however when combined they in fact resolve one of the last major open issues about how Vecty fundamentally operates. With this change, Vecty now ensures that the persistent pointer to your component instances remain the same regardless of e.g. the styles that you pass into element constructors.

constructors no longer accept markup directly

Tag, Text, and elem.Foo constructors no longer accept markup (styles, properties, etc.) directly. You must now specify them via vecty.Markup. For example, this code:

func (p *PageView) Render() *vecty.HTML {
 	return elem.Body(
 		vecty.Style("background", "red"),
	 	vecty.Text("Hello World"),
 	)
}

Must now be written as:

func (p *PageView) Render() *vecty.HTML {
 	return elem.Body(
 		vecty.Markup(
	 		vecty.Style("background", "red"),
 		),
	 	vecty.Text("Hello World"),
 	)
}

If no longer works for markup

If now only accepts ComponentOrHTML (meaning Component, *HTML, List or nil). It does not accept markup anymore (styles, properties, etc). A new MarkupIf function is added for this purpose. For example you would need to make a change like this to your code:

func (p *PageView) Render() *vecty.HTML {
 	return elem.Body(
 		vecty.Markup(
-			vecty.If(isBackgroundRed, vecty.Style("background", "red")),
+			vecty.MarkupIf(isBackgroundRed, vecty.Style("background", "red")),
 		),
 		vecty.Text("Hello World"),
 	)
}

Other breaking changes

  • ComponentOrHTML now includes nil and the new List type, rather than just Component and *HTML.
  • MarkupOrComponentOrHTML has been renamed to MarkupOrChild, and now includes nil and the new List and MarkupList (instead of Markup, see below) types.
  • The Markup interface has been renamed to Applyer, and a Markup function has been added to create a MarkupList.

Aug 6, 2017 (PR #130): minor breaking change

The Restorer interface has been removed, component instances are now persistent. Properties should be denoted via `vecty:"prop"` struct field tags.

Jun 17, 2017 (PR #117): minor breaking change

(*HTML).Restore is no longer exported, this method was not generally used externally.

May 11, 2017 (PR #108): minor breaking change

(*HTML).Node is now a function instead of a struct field.