/**
 * Source Location Types
 * Tracks positions in MEL source code for error reporting
 */
/**
 * A position in source code (1-based line/column)
 */
export interface Position {
    /** 1-based line number */
    line: number;
    /** 1-based column number */
    column: number;
    /** 0-based byte offset from start of source */
    offset: number;
}
/**
 * A span in source code (start to end)
 */
export interface SourceLocation {
    start: Position;
    end: Position;
    /** Optional source file path */
    source?: string;
}
/**
 * Create a position
 */
export declare function createPosition(line: number, column: number, offset: number): Position;
/**
 * Create a source location from two positions
 */
export declare function createLocation(start: Position, end: Position, source?: string): SourceLocation;
/**
 * Create a zero-width location at a position
 */
export declare function createPointLocation(pos: Position, source?: string): SourceLocation;
/**
 * Merge two locations into one spanning both
 */
export declare function mergeLocations(a: SourceLocation, b: SourceLocation): SourceLocation;