export declare abstract class Assert {
    abstract ok(something: any, message?: string): void;
    static instance: Assert;
    /**
     * Provide an Assert instance suited to the environment (browser or NodeJS)
     */
    static getInstance(): Promise<Assert>;
}
export declare class BrowserAssert extends Assert {
    ok(something: any, message?: string): void;
}
export declare class NodeAssert extends Assert {
    protected assert: any;
    constructor(assert: any);
    ok(something: any, message?: string): void;
}