/**
 * @file English Pattern Compiler
 * @description English-specific implementation of pattern compilation
 */
import { PatternCompiler, CompiledPattern } from '@sharpee/if-domain';
/**
 * English-specific pattern compiler
 * Handles patterns like: "put :item in|into|inside :container"
 */
export declare class EnglishPatternCompiler implements PatternCompiler {
    /**
     * Compile a pattern string into tokens
     */
    compile(pattern: string): CompiledPattern;
    /**
     * Expand optional elements in square brackets to markers
     * E.g., "look [carefully] at :target" -> "look [optional] carefully at :target"
     */
    private expandOptionalElements;
    /**
     * Validate a pattern string
     */
    validate(pattern: string): boolean;
    /**
     * Extract slot names from a pattern
     */
    extractSlots(pattern: string): string[];
}
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