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fix: intellisense DX for $props, $inspect, $bindable, and $host (#14777)
* remove default function types for $props, $inspect, $bindable, and $host * changeset * regenerate types * add helper message for type regeneration * append a newline to generated types * prettier --------- Co-authored-by: Rich Harris <[email protected]>
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+190
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‎.changeset/three-suits-pay.md‎

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---
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'svelte': patch
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---
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fix: Improve typescript DX for $inspect, $props, $bindable, and $host

‎.github/workflows/ci.yml‎

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@@ -59,7 +59,7 @@ jobs:
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run: pnpm lint
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- name: build and check generated types
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if: (${{ success() }} || ${{ failure() }}) # ensures this step runs even if previous steps fail
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run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally and commit the changes after you have reviewed them"; git diff; exit 1); }
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run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally with `cd packages/svelte && pnpm generate:types` and commit the changes after you have reviewed them"; git diff; exit 1); }
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Benchmarks:
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runs-on: ubuntu-latest
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timeout-minutes: 15

‎.github/workflows/release.yml‎

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run: pnpm install --frozen-lockfile
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- name: Build
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run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally and commit the changes after you have reviewed them"; git diff; exit 1); }
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run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally with `cd packages/svelte && pnpm generate:types` and commit the changes after you have reviewed them"; git diff; exit 1); }
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- name: Create Release Pull Request or Publish to npm
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id: changesets

‎packages/svelte/scripts/generate-types.js‎

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@@ -46,6 +46,8 @@ await createBundle({
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}
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});
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fs.appendFileSync(`${dir}/types/index.d.ts`, '\n');
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const types = fs.readFileSync(`${dir}/types/index.d.ts`, 'utf-8');
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const bad_links = [...types.matchAll(/\]\((\/[^)]+)\)/g)];

‎packages/svelte/src/ambient.d.ts‎

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@@ -338,6 +338,29 @@ declare namespace $effect {
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*/
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declare function $props(): any;
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declare namespace $props {
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}
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/**
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* Declares a prop as bindable, meaning the parent component can use `bind:propName={value}` to bind to it.
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*
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*/
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declare function $bindable<T>(fallback?: T): T;
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declare namespace $bindable {
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}
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/**
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* Inspects one or more values whenever they, or the properties they contain, change. Example:
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*
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* </script>
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*/
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export function trace(name: string): void;
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}
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/**
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* https://svelte.dev/docs/svelte/$host
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*/
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declare function $host<El extends HTMLElement = HTMLElement>(): El;
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declare namespace $host {
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}

‎packages/svelte/types/index.d.ts‎

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@@ -2996,6 +2996,29 @@ declare namespace $effect {
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*/
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declare function $props(): any;
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declare namespace $props {
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}
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/**
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* Declares a prop as bindable, meaning the parent component can use `bind:propName={value}` to bind to it.
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*
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*/
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declare function $bindable<T>(fallback?: T): T;
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declare namespace $bindable {
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}
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/**
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* Inspects one or more values whenever they, or the properties they contain, change. Example:
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*
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* </script>
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*/
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export function trace(name: string): void;
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}
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/**
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*/
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declare function $host<El extends HTMLElement = HTMLElement>(): El;
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//# sourceMappingURL=index.d.ts.map
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declare namespace $host {
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// prevent intellisense from being unhelpful
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/** @deprecated */
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export const apply: never;
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/** @deprecated */
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// @ts-ignore
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export const arguments: never;
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/** @deprecated */
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export const bind: never;
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/** @deprecated */
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export const call: never;
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/** @deprecated */
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export const caller: never;
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/** @deprecated */
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export const length: never;
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/** @deprecated */
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export const name: never;
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/** @deprecated */
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export const prototype: never;
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/** @deprecated */
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export const toString: never;
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}
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//# sourceMappingURL=index.d.ts.map

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