import { DSL } from './dsl';
export declare class Writer {
    readonly namespace: Writer.Namespace;
    private tokens;
    constructor(namespace?: Writer.Namespace);
    toExpression(): {
        Expression: string;
        ExpressionAttributeNames: {
            [alias: string]: string;
        };
        ExpressionAttributeValues: {
            [id: string]: import("aws-sdk/clients/dynamodb").AttributeValue;
        };
    };
    head(): string | undefined;
    pop(): string | undefined;
    writeNode(value: DSL.Node): void;
    writeToken(token: string): void;
    writeName(name: string): void;
    writeValue(value: AWS.DynamoDB.AttributeValue): void;
}
export declare namespace Writer {
    class Namespace {
        aliases: {
            [alias: string]: string;
        };
        aliasReverseLookup: {
            [name: string]: string;
        };
        values: {
            [id: string]: AWS.DynamoDB.AttributeValue;
        };
        private namesCounter;
        private valuesCounter;
        addValue(value: AWS.DynamoDB.AttributeValue): string;
        addName(name: string): string;
        private newNameAlias;
        private newValueId;
    }
}
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