mirror of https://github.com/sveltejs/svelte
[fix] call `on_destroy` if unmounted called immediately before `on_mount` (#7860)
* call on_destroy if unmounted called immediately before on_mount * feat: review changespull/7819/head
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57541e6abc
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/**
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* INTERNAL, DO NOT USE. Code may change at any time.
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*/
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export interface Fragment {
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key: string | null;
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first: null;
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/* create */ c: () => void;
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/* claim */ l: (nodes: any) => void;
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/* hydrate */ h: () => void;
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/* mount */ m: (target: HTMLElement, anchor: any) => void;
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/* update */ p: (ctx: T$$['ctx'], dirty: T$$['dirty']) => void;
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/* measure */ r: () => void;
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/* fix */ f: () => void;
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/* animate */ a: () => void;
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/* intro */ i: (local: any) => void;
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/* outro */ o: (local: any) => void;
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/* destroy */ d: (detaching: 0 | 1) => void;
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}
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export type FragmentFactory = (ctx: any) => Fragment;
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export interface T$$ {
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dirty: number[];
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ctx: any[];
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bound: any;
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update: () => void;
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callbacks: any;
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after_update: any[];
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props: Record<string, 0 | string>;
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fragment: null | false | Fragment;
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not_equal: any;
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before_update: any[];
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context: Map<any, any>;
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on_mount: any[];
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on_destroy: any[];
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skip_bound: boolean;
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on_disconnect: any[];
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root:Element | ShadowRoot
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}
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<script>
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import { onMount } from 'svelte';
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export let logs;
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export let state;
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onMount(() => {
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logs.push(`mount ${state}`);
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return () => {
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logs.push(`unmount ${state}`);
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};
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});
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</script>
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{state}
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export default {
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html: 'Loading...',
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async test({ assert, component, target }) {
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await component.test();
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assert.htmlEqual(target.innerHTML, '1');
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assert.deepEqual(component.logs, ['mount 0', 'unmount 0', 'mount 1']);
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}
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};
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<script>
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import { tick } from 'svelte';
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import Component from './Component.svelte';
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let promise;
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let resolve;
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let value = 0;
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export let logs = [];
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async function new_promise() {
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promise = new Promise(r => {
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resolve = r;
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});
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}
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async function resolve_promise() {
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await Promise.resolve();
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resolve(value++);
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}
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export async function test() {
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resolve_promise();
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await Promise.resolve();
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new_promise();
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resolve_promise();
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return tick();
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}
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new_promise();
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</script>
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{#await promise}
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Loading...
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{:then state}
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<Component {state} {logs} />
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{/await}
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