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import { createComponent } from "./component.js";import {  createRoot,  createSignal,  createContext,  useContext,  getSuspenseContext,  resumeEffects,  createMemo,  Accessor,  onCleanup,  getOwner} from "../reactive/signal.js";import { HydrationContext, setHydrateContext, sharedConfig } from "./hydration.js";import type { JSX } from "../jsx.js";
type SuspenseListContextType = {  register: (inFallback: Accessor<boolean>) => Accessor<SuspenseListRegisteredState>;};
type SuspenseListRegisteredState = { showContent: boolean; showFallback: boolean };interface SuspenseListState extends Array<SuspenseListRegisteredState> {  inFallback: boolean;}
const suspenseListEquals = (a: SuspenseListRegisteredState, b: SuspenseListRegisteredState) =>  a.showContent === b.showContent && a.showFallback === b.showFallback;const SuspenseListContext = createContext<SuspenseListContextType>();
/** * **[experimental]** controls the order in which suspended content is rendered * * @description https://www.solidjs.com/docs/latest/api#%3Csuspenselist%3E-(experimental) */export function SuspenseList(props: {  children: JSX.Element;  revealOrder: "forwards" | "backwards" | "together";  tail?: "collapsed" | "hidden";}) {  let [wrapper, setWrapper] = createSignal(() => ({ inFallback: false })),    show: Accessor<{ showContent: boolean; showFallback: boolean }>;
  // Nested SuspenseList support  const listContext = useContext(SuspenseListContext);  const [registry, setRegistry] = createSignal<Accessor<boolean>[]>([]);  if (listContext) {    show = listContext.register(createMemo(() => wrapper()().inFallback));  }  const resolved = createMemo<SuspenseListState>(    (prev: Partial<SuspenseListState>) => {      const reveal = props.revealOrder,        tail = props.tail,        { showContent = true, showFallback = true } = show ? show() : {},        reg = registry(),        reverse = reveal === "backwards";
      if (reveal === "together") {        const all = reg.every(inFallback => !inFallback());        const res: SuspenseListState = reg.map(() => ({          showContent: all && showContent,          showFallback        })) as SuspenseListState;        res.inFallback = !all;        return res;      }
      let stop = false;      let inFallback = prev.inFallback as boolean;      const res: SuspenseListState = [] as any;      for (let i = 0, len = reg.length; i < len; i++) {        const n = reverse ? len - i - 1 : i,          s = reg[n]();        if (!stop && !s) {          res[n] = { showContent, showFallback };        } else {          const next = !stop;          if (next) inFallback = true;          res[n] = {            showContent: next,            showFallback: !tail || (next && tail === "collapsed") ? showFallback : false          };          stop = true;        }      }      if (!stop) inFallback = false;      res.inFallback = inFallback;      return res;    },    { inFallback: false } as unknown as SuspenseListState  );  setWrapper(() => resolved);
  return createComponent(SuspenseListContext.Provider, {    value: {      register: (inFallback: Accessor<boolean>) => {        let index: number;        setRegistry(registry => {          index = registry.length;          return [...registry, inFallback];        });        return createMemo(() => resolved()[index], undefined, {          equals: suspenseListEquals        });      }    },    get children() {      return props.children;    }  });}
/** * tracks all resources inside a component and renders a fallback until they are all resolved * ```typescript * const AsyncComponent = lazy(() => import('./component')); * * <Suspense fallback={<LoadingIndicator />}> *   <AsyncComponent /> * </Suspense> * ``` * @description https://www.solidjs.com/docs/latest/api#%3Csuspense%3E */export function Suspense(props: { fallback?: JSX.Element; children: JSX.Element }) {  let counter = 0,    show: Accessor<SuspenseListRegisteredState>,    ctx: HydrationContext | undefined,    p: Promise<any> | any,    flicker: Accessor<void> | undefined,    error: any;  const [inFallback, setFallback] = createSignal<boolean>(false),    SuspenseContext = getSuspenseContext(),    store = {      increment: () => {        if (++counter === 1) setFallback(true);      },      decrement: () => {        if (--counter === 0) setFallback(false);      },      inFallback,      effects: [],      resolved: false    },    owner = getOwner();  if (sharedConfig.context && sharedConfig.load) {    const key = sharedConfig.context.id + sharedConfig.context.count;    let ref = sharedConfig.load(key);    if (ref && (p = ref[0]) && p !== "$$f") {      if (typeof p !== "object" || !("then" in p)) p = Promise.resolve(p);      const [s, set] = createSignal(undefined, { equals: false });      flicker = s;      p.then((err: any) => {        if (err || sharedConfig.done) {          err && (error = err);          return set();        }        sharedConfig.gather!(key);        setHydrateContext(ctx);        set();        setHydrateContext();      });    }  }
  // SuspenseList support  const listContext = useContext(SuspenseListContext);  if (listContext) show = listContext.register(store.inFallback);  let dispose: undefined | (() => void);  onCleanup(() => dispose && dispose());
  return createComponent(SuspenseContext.Provider, {    value: store,    get children() {      return createMemo(() => {        if (error) throw error;        ctx = sharedConfig.context!;        if (flicker) {          flicker();          return (flicker = undefined);        }        if (ctx && p === "$$f") setHydrateContext();        const rendered = createMemo(() => props.children);        return createMemo((prev: JSX.Element) => {          const inFallback = store.inFallback(),            { showContent = true, showFallback = true } = show ? show() : {};          if ((!inFallback || (p && p !== "$$f")) && showContent) {            store.resolved = true;            dispose && dispose();            dispose = ctx = p = undefined;            resumeEffects(store.effects);            return rendered();          }          if (!showFallback) return;          if (dispose) return prev;          return createRoot(disposer => {            dispose = disposer;            if (ctx) {              setHydrateContext({ id: ctx.id + "f", count: 0 });              ctx = undefined;            }            return props.fallback;          }, owner!);        });      });    }  });}