export type Maybe<T> = T | undefined | null;
export type StringList<T> = T | (string & NonNullable<unknown>);
export type ElementOf<T> = T extends (infer E)[] ? E : never;
export type ValueOf<T> = T[keyof T];
export type Modify<T, R> = Omit<T, keyof R> & R;
export type DeepPartial<T> = {
    [P in keyof T]?: DeepPartial<T[P]>;
};
export declare function isNullish<T>(v: T | undefined | null): v is null | undefined;
export declare function isNotNullish<T>(v: T | undefined | null): v is T;
export declare function isNotString<T>(v: T | string): v is T;
export declare function isNotBoolean<T>(v: T | boolean): v is T;
export declare function isNotNumber<T>(v: T | number): v is T;
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