import { BlueNode, MergingProcessor } from '@blue-labs/language';
/**
 * Preserves expression values (strings starting with "${" and ending with "}")
 * preventing them from being overridden by type definitions.
 *
 * This processor must run BEFORE TypeAssigner to be effective.
 */
export declare class ExpressionPreserver implements MergingProcessor {
    process(target: BlueNode, source: BlueNode): BlueNode;
    /**
     * Post-process to ensure expressions aren't overridden by subsequent processors
     */
    postProcess(target: BlueNode, source: BlueNode): BlueNode;
}
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