import { ThrowCompletion, type Completion, type Value } from '../index.mts';
import type { ParseNode } from '../parser/ParseNode.mts';
declare class AssertError extends Error {
    constructor(source?: string, options?: {
        cause?: Completion<unknown>;
    });
}
export declare function Assert(invariant: boolean, source?: string, completion?: Completion<unknown>): asserts invariant;
export declare namespace Assert {
    var Error: typeof AssertError;
}
export declare namespace Assert {
    var Throw: (source?: string, completion?: Completion<unknown>) => never;
}
/** https://tc39.es/ecma262/#sec-requireinternalslot */
export declare function RequireInternalSlot(O: Value, internalSlot: string): ThrowCompletion | undefined;
export declare function sourceTextMatchedBy(node: ParseNode): string;
export declare function isStrictModeCode(node: ParseNode): boolean;
//# sourceMappingURL=notational-conventions.d.mts.map