/**
 * Make a map and return a function for checking if a key
 * is in that map.
 * IMPORTANT: all calls of this function must be prefixed with
 * \/\*#\_\_PURE\_\_\*\/
 * So that rollup can tree-shake them if necessary.
 */
export declare function makeMap(str: string): (key: string) => boolean;

export declare const EMPTY_OBJ: {
    readonly [key: string]: any;
};
export declare const EMPTY_ARR: readonly never[];
export declare const NOOP: () => void;
/**
 * Always return false.
 */
export declare const NO: () => boolean;
export declare const isOn: (key: string) => boolean;
export declare const isModelListener: (key: string) => key is `onUpdate:${string}`;
export declare const extend: typeof Object.assign;
export declare const remove: <T>(arr: T[], el: T) => void;
export declare const hasOwn: (val: object, key: string | symbol) => key is keyof typeof val;
export declare const isArray: typeof Array.isArray;
export declare const isMap: (val: unknown) => val is Map<any, any>;
export declare const isSet: (val: unknown) => val is Set<any>;
export declare const isDate: (val: unknown) => val is Date;
export declare const isRegExp: (val: unknown) => val is RegExp;
export declare const isFunction: (val: unknown) => val is Function;
export declare const isString: (val: unknown) => val is string;
export declare const isSymbol: (val: unknown) => val is symbol;
export declare const isObject: (val: unknown) => val is Record<any, any>;
export declare const isPromise: <T = any>(val: unknown) => val is Promise<T>;
export declare const objectToString: typeof Object.prototype.toString;
export declare const toTypeString: (value: unknown) => string;
export declare const toRawType: (value: unknown) => string;
export declare const isPlainObject: (val: unknown) => val is object;
export declare const isIntegerKey: (key: unknown) => boolean;
/**
 * @private
 */
export declare const camelize: (str: string) => string;
/**
 * @private
 */
export declare const hyphenate: (str: string) => string;
/**
 * @private
 */
export declare const capitalize: <T extends string>(str: T) => Capitalize<T>;
/**
 * @private
 */
export declare const toHandlerKey: <T extends string>(str: T) => T extends '' ? '' : `on${Capitalize<T>}`;
export declare const hasChanged: (value: any, oldValue: any) => boolean;
export declare const invokeArrayFns: (fns: Function[], ...arg: any[]) => void;
export declare const def: (obj: object, key: string | symbol, value: any, writable?: boolean) => void;
/**
 * "123-foo" will be parsed to 123
 * This is used for the .number modifier in v-model
 */
export declare const looseToNumber: (val: any) => any;
/**
 * Only concerns number-like strings
 * "123-foo" will be returned as-is
 */
export declare const toNumber: (val: any) => any;
export declare const getGlobalThis: () => any;
export declare function genPropsAccessExp(name: string): string;
export declare function genCacheKey(source: string, options: any): string;

export type Prettify<T> = {
    [K in keyof T]: T[K];
} & {};
export type UnionToIntersection<U> = (U extends any ? (k: U) => void : never) extends (k: infer I) => void ? I : never;
export type LooseRequired<T> = {
    [P in keyof (T & Required<T>)]: T[P];
};
export type IfAny<T, Y, N> = 0 extends 1 & T ? Y : N;
export type IsKeyValues<T, K = string> = IfAny<T, false, T extends object ? (keyof T extends K ? true : false) : false>;
/**
 * Utility for extracting the parameters from a function overload (for typed emits)
 * https://github.com/microsoft/TypeScript/issues/32164#issuecomment-1146737709
 */
export type OverloadParameters<T extends (...args: any[]) => any> = Parameters<OverloadUnion<T>>;
type OverloadProps<TOverload> = Pick<TOverload, keyof TOverload>;
type OverloadUnionRecursive<TOverload, TPartialOverload = unknown> = TOverload extends (...args: infer TArgs) => infer TReturn ? TPartialOverload extends TOverload ? never : OverloadUnionRecursive<TPartialOverload & TOverload, TPartialOverload & ((...args: TArgs) => TReturn) & OverloadProps<TOverload>> | ((...args: TArgs) => TReturn) : never;
type OverloadUnion<TOverload extends (...args: any[]) => any> = Exclude<OverloadUnionRecursive<(() => never) & TOverload>, TOverload extends () => never ? never : () => never>;