Update dependency lit to v3

[renovate]

Note

Mend has cancelled the proposed renaming of the Renovate GitHub app being renamed to mend[bot].

This notice will be removed on 2025-10-07.

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This PR contains the following updates:

Package	Change	Age	Confidence
lit (source)	^2.8.0 -> ^3.0.0

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Release Notes

lit/lit (lit)

v3.3.1

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Patch Changes

• #​4997 aea85e24 - Update README

• #​4988 6792b7ef Thanks @​ADNolan! - Adjusted the comparison to use the name property of the _$resolve function and the resolveOverrideFn in private ssr support to prevent duplicated patching of the directive class.

• #​4976 a126d8df - Fix minor regression in property converters. fromAttribute may return either null or undefined.

v3.3.0

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Minor Changes

• #​4901 c9160405 Thanks @​maxpatiiuk! - Dev mode warnings are now emitted on the next microtask after package import, allowing for a wider opportunity to suppress the warnings by consumers.

• #​4934 4824c4ce - Adds property option for useDefault. When set, the initial default value is not considered a change and does not reflect when reflect is set. In addition, when the attribute is removed, the default value is restored.

Patch Changes

• #​4949 3e2f87f6 - fixes inconsistent initial changed properties values

• #​4956 0a9bc720 Thanks @​louis-bompart! - Import barrels explicitly for compatibility with modern Node resolution w/ ESM

• Updated dependencies [c9160405, 3e2f87f6, 4824c4ce, 0a9bc720]:

  • @​lit/reactive-element@​2.1.0
  • lit-element@​4.2.0
  • lit-html@​3.3.0

v3.2.1

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Patch Changes

• #​4782 99703a03 - Revert the Terser plugin for Rollup to rollup-plugin-terser from @rollup/plugin-terser
  due to a bug that prevented our minified name prefixing from working.

v3.2.0

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Minor Changes

• #​4637 feccc1ba - Add MathML support with the mathml template tag

Patch Changes

• Updated dependencies [feccc1ba]:
  • lit-html@​3.2.0
  • lit-element@​4.1.0

v3.1.4

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Patch Changes

• #​4646 abf30b3e - The value provided by the ref() directive will always be undefined when the element is disconnected.

v3.1.3

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Patch Changes

• #​4570 bd881370 - Fix the lit-html marker length to be consistently 9 characters.

v3.1.2

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Patch Changes

• #​4523 1a32b61e - Add a DEV_MODE error to catch duplicate attribute bindings that otherwise create silent errors.

• #​4485 57b00630 - Add "browser" export condition entrypoints to any package.json files with "node"
  export conditions. This fixes Node test runners emulating browser environments that were incorrectly loading the
  "node" entrypoints instead of the browser code.

• Updated dependencies [1a32b61e, 57b00630, dca963f7]:

  • lit-html@​3.1.2
  • @​lit/reactive-element@​2.0.4
  • lit-element@​4.0.4

v3.1.1

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Patch Changes

• #​4409 1af7991c - asyncReplace correctly re-renders when value is unchanged (#​4408)

• #​4473 9a4d569f - Add a warning in dev mode when binding this.requestUpdate directly as an event listener.

• #​4413 f60a3a2c - Remove unused internal parameters to requestUpdate()

v3.1.0

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Minor Changes

• #​4309 949a5467 - Adds two new types: UncompiledTemplateResult and MaybeCompiledTemplateResult. Currently UncompiledTemplateResult is the same as TemplateResult, and MaybeCompiledTemplateResult is the union of the compiled and uncompiled types.

Patch Changes

• #​4387 bf551b5b - Ensure renderRoot exists before first update (#​4268)

• #​4282 c7922a0c Thanks @​MaxArt2501! - Fix a bug where accessing a @query decorated field with the cache flag set before the first update would result in null being cached permanently. null will no longer be cached before the first update and in DEV_MODE now raises a warning.

• #​4388 839ca0f8 - Fixes bug where adding or removing controllers during a reactive controller lifecycle would affect the execution of other controllers (#​4266). Controllers can now be added/removed during lifecycle without affecting others.

• Updated dependencies [949a5467]:

  • lit-html@​3.1.0

v3.0.2

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Patch Changes

• #​4345 02b8d620 - Add a dev mode warning if a static value such as literal or unsafeStatic is detected within the non-static html tag function. These should only be used with the static html tag function imported from lit-html/static.js or lit/static-html.js.

v3.0.1

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Patch Changes

• #​4240 edf998c9 Thanks @​remziatay! - Improved the type inferece of the choose() directive to properly restrict the case type inferred from provided value. Note: If this change creates a type error in your code, there must have been an unreachable case that can be removed, or the type of your value might be missing a valid case in the union.

• #​4310 8f674ab3 Thanks @​megheaiulian! - The when() directive now calls the case functions with the provided condition value as an argument. This allows the narrowing of types for the condition value based on its truthiness when used as a parameter for the case function.

• #​4284 89a5b088 - Allow null to be in the type of @query() decorated fields

v3.0.0

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Major Changes

• #​3756 f06f7972 - Drop IE11 support

• #​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.

• #​3765 92cedaa2 - Remove experimental hydrate modules. These are available from @lit-labs/ssr-client.

• #​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'}).

• #​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.

• #​3759 1db01376 - Use replaceWith() for SVG templates

• #​3751 dfd747cf - Simplify lit-html attribute handling for standards-compliant browsers that iterate attributes in source order

• #​3750 c3e473b4 - Use toggleAttribute() to simplify boolean attribute parts

• #​3896 2eba6997 - Warn on async overrides of performUpdate()

Patch Changes

• #​4183 6470807f - Make the decorators work with the accessor keyword when experimentalDecorators is true.

• #​4141 6b515e43 - Update TypeScript to ~5.2.0

• #​3710 09949234 - Add undefined to the return type of PropertyValues.get()

• #​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

• Updated dependencies:

  • @​lit/reactive-element@​2.0.0
  • lit-html@​3.0.0
  • lit-element@​4.0.0

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