import { AsyncCreatable } from '@salesforce/kit';
import { AnyJson, Dictionary, JsonMap, Optional } from '@salesforce/ts-types';
/**
 * The allowed types stored in a config store.
 */
export declare type ConfigValue = AnyJson;
/**
 * The type of entries in a config store defined by the key and value type of {@link ConfigContents}.
 */
export declare type ConfigEntry = [string, ConfigValue];
/**
 * The type of content a config stores.
 */
export declare type ConfigContents = Dictionary<ConfigValue>;
/**
 * An interface for a config object with a persistent store.
 */
export interface ConfigStore {
    entries(): ConfigEntry[];
    get(key: string): Optional<ConfigValue>;
    getKeysByValue(value: ConfigValue): string[];
    has(key: string): boolean;
    keys(): string[];
    set(key: string, value: ConfigValue): ConfigContents;
    unset(key: string): boolean;
    unsetAll(keys: string[]): boolean;
    clear(): void;
    values(): ConfigValue[];
    forEach(actionFn: (key: string, value: ConfigValue) => void): void;
    awaitEach(actionFn: (key: string, value: ConfigValue) => Promise<void>): Promise<void>;
    getContents(): ConfigContents;
    setContents(contents?: ConfigContents): void;
}
/**
 * An abstract class that implements all the config management functions but
 * none of the storage functions.
 *
 * **Note:** To see the interface, look in typescripts autocomplete help or the npm package's ConfigStore.d.ts file.
 */
export declare abstract class BaseConfigStore<T extends BaseConfigStore.Options> extends AsyncCreatable<T> implements ConfigStore {
    protected options: T;
    private contents;
    /**
     * Constructor.
     *
     * @param options The options for the class instance.
     * @ignore
     */
    constructor(options: T);
    /**
     * Returns an array of {@link ConfigEntry} for each element in the config.
     */
    entries(): ConfigEntry[];
    /**
     * Returns the value associated to the key, or undefined if there is none.
     *
     * @param key The key.
     */
    get(key: string): Optional<ConfigValue>;
    /**
     * Returns the list of keys that contain a value.
     *
     * @param value The value to filter keys on.
     */
    getKeysByValue(value: ConfigValue): string[];
    /**
     * Returns a boolean asserting whether a value has been associated to the key in the config object or not.
     *
     * @param key The key.
     */
    has(key: string): boolean;
    /**
     * Returns an array that contains the keys for each element in the config object.
     */
    keys(): string[];
    /**
     * Sets the value for the key in the config object.
     *
     * @param key The Key.
     * @param value The value.
     */
    set(key: string, value: ConfigValue): ConfigContents;
    /**
     * Returns `true` if an element in the config object existed and has been removed, or `false` if the element does not
     * exist. {@link BaseConfigStore.has} will return false afterwards.
     *
     * @param key The key.
     */
    unset(key: string): boolean;
    /**
     * Returns `true` if all elements in the config object existed and have been removed, or `false` if all the elements
     * do not exist (some may have been removed). {@link BaseConfigStore.has(key)} will return false afterwards.
     *
     * @param keys The keys.
     */
    unsetAll(keys: string[]): boolean;
    /**
     * Removes all key/value pairs from the config object.
     */
    clear(): void;
    /**
     * Returns an array that contains the values for each element in the config object.
     */
    values(): ConfigValue[];
    /**
     * Returns the entire config contents.
     */
    getContents(): ConfigContents;
    /**
     * Sets the entire config contents.
     *
     * @param contents The contents.
     */
    setContents(contents?: ConfigContents): void;
    /**
     * Invokes `actionFn` once for each key-value pair present in the config object.
     *
     * @param {function} actionFn The function `(key: string, value: ConfigValue) => void` to be called for each element.
     */
    forEach(actionFn: (key: string, value: ConfigValue) => void): void;
    /**
     * Asynchronously invokes `actionFn` once for each key-value pair present in the config object.
     *
     * @param {function} actionFn The function `(key: string, value: ConfigValue) => Promise<void>` to be called for
     * each element.
     * @returns {Promise<void>}
     */
    awaitEach(actionFn: (key: string, value: ConfigValue) => Promise<void>): Promise<void>;
    /**
     * Convert the config object to a JSON object. Returns the config contents.
     * Same as calling {@link ConfigStore.getContents}
     */
    toObject(): JsonMap;
    /**
     * Convert an object to a {@link ConfigContents} and set it as the config contents.
     *
     * @param obj The object.
     */
    setContentsFromObject<U extends object>(obj: U): void;
    protected setMethod(contents: ConfigContents, key: string, value?: ConfigValue): void;
}
/**
 * @ignore
 */
export declare namespace BaseConfigStore {
    /**
     * Options for the config store.
     */
    interface Options {
        /**
         * Intial contents for the config.
         */
        contents?: ConfigContents;
    }
}