dev-ui/node_modules/mode-watcher/dist/theme-state.svelte.js

import { PersistedState, watch } from "runed";
import { themeStorageKey } from "./storage-keys.svelte.js";
import { isBrowser, noopStorage } from "./utils.js";
class CustomTheme {
    #storage = isBrowser ? localStorage : noopStorage;
    #initialValue = this.#storage.getItem(themeStorageKey.current);
    #value = this.#initialValue === null || this.#initialValue === undefined ? "" : this.#initialValue;
    #persisted = $state(this.#makePersisted());
    #makePersisted(value = this.#value) {
        return new PersistedState(themeStorageKey.current, value, {
            serializer: {
                serialize: (v) => {
                    if (typeof v !== "string")
                        return "";
                    return v;
                },
                deserialize: (v) => v,
            },
        });
    }
    constructor() {
        $effect.root(() => {
            return watch.pre(() => themeStorageKey.current, (_, prevStorageKey) => {
                const currModeValue = this.#persisted.current;
                this.#persisted = this.#makePersisted(currModeValue);
                if (prevStorageKey) {
                    localStorage.removeItem(prevStorageKey);
                }
            });
        });
    }
    /**
     * The current theme.
     * @returns The current theme.
     */
    get current() {
        return this.#persisted.current;
    }
    /**
     * Set the current theme.
     * @param newValue The new theme to set.
     */
    set current(newValue) {
        this.#persisted.current = newValue;
    }
}
/**
 * A custom theme to apply and persist to the root `html` element.
 */
export const customTheme = new CustomTheme();