lit/lit lit-element@4.0.0 on GitHub

#3751 dfd747cf - Simplify lit-html attribute handling for standards-compliant browsers that iterate attributes in source order
#4254 1040f758 - Change the type of ReactiveElement.renderRoot and return type of ReactiveElement.createRenderRoot() to be HTMLElement | DocumentFragment to match each other and lit-html's render() method.
#4146 0f6878dc - Generated accessor for reactive properties now wrap user accessors and automatically call this.requestUpdate() in the setter. As in previous versions, users can still specify noAccessor: true, in which case they should call this.requestUpdate() themselves in the setter if they want to trigger a reactive update.
#3759 1db01376 - Use replaceWith() for SVG templates
#3750 c3e473b4 - Use toggleAttribute() to simplify boolean attribute parts
#3850 7e8491d4 - Delete deprecated queryAssignedNodes behavior and arguments.
Migrate deprecated usage with a selector argument to use
@queryAssignedElements. E.g.: @queryAssignedNodes('list', true, '.item') to
@queryAssignedElements({slot: '', flatten: false, selector: '.item'}).
#3754 76795a18 - Remove UpdatingElement alias for ReactiveElement
#3765 92cedaa2 - Remove experimental hydrate modules. These are available from @lit-labs/ssr-client.
#3756 f06f7972 - Drop IE11 support
#3896 2eba6997 - Warn on async overrides of performUpdate()

#4183 6470807f - Make the decorators work with the accessor keyword when experimentalDecorators is true.
#3762 23c404fd - Remove Lit 1 -> Lit 2 migration warnings
#3918 2a01471a - Some code golf on ReactiveElement
#3809 6f2833fd - Use for/of loops in more places
#3710 09949234 - Add undefined to the return type of PropertyValues.get()
Updated dependencies:
- @lit/reactive-element@2.0.0
- lit-html@3.0.0
#4141 6b515e43 - Update TypeScript to ~5.2.0