import { CodeBlockTokenType } from './codeBlock.token';
import { DiffLineType, DiffLine, DiffViewSegment, SupportedLanguage } from './types';
/**
 * Token interface for syntax highlighting
 */
export interface SyntaxToken {
    type: string;
    value: string;
}
/**
 * Formats code using Prettier (with fallback for unsupported languages)
 * This is a simplified formatter that handles basic indentation and spacing
 */
export declare const formatCode: (code: string, language?: SupportedLanguage) => string;
/**
 * Tokenizes a line of code for syntax highlighting
 * Supports multiple languages: JavaScript/TypeScript, Python, Rust, Haskell
 */
export declare const tokenizeLine: (line: string, language?: string) => SyntaxToken[];
/**
 * Gets the color for a token type based on syntax highlighting rules
 */
export declare const getTokenColor: (type: string, syntaxTokens: CodeBlockTokenType["body"]["syntax"]) => string;
/**
 * Gets the gutter (line number) styling for diff mode
 */
export declare const getDiffGutterStyle: (lineType: DiffLineType | undefined, isDiffMode: boolean, gutterTokens: CodeBlockTokenType["body"]["gutter"]) => React.CSSProperties;
/**
 * Gets the highlighted line background styling for diff mode
 */
export declare const getDiffLineBackground: (lineType: DiffLineType | undefined, isDiffMode: boolean, highlightedLineTokens: CodeBlockTokenType["body"]["highlightedLine"]) => React.CSSProperties;
/**
 * Determines if line numbers should be shown based on variant and explicit prop
 */
export declare const shouldShowLineNumbers: (showLineNumbers: boolean | undefined, variant: string) => boolean;
/**
 * Creates a copy to clipboard function with state management
 */
export declare const createCopyToClipboard: (code: string, setIsCopied: (copied: boolean) => void) => () => void;
/**
 * Processes lines for diff or normal mode
 */
export declare const processLines: (isDiffMode: boolean, diffLines: DiffLine[] | undefined, code: string) => string[] | undefined;
/**
 * Stable key for a collapsed line range in diff view (inclusive indices).
 */
export declare const getDiffCollapsedRangeKey: (start: number, end: number) => string;
/**
 * Merges per-change visibility intervals (change line ± context) into
 * non-overlapping ranges of line indices that stay visible when collapsed.
 */
export declare const mergeDiffVisibleIntervals: (diffLines: DiffLine[], contextLines: number) => [number, number][];
/**
 * Builds ordered segments: visible line ranges and collapsed gaps. Expanded
 * gaps are still emitted as `collapsed`; the UI decides whether to show the
 * expand affordance or the full line range.
 */
export declare const buildDiffViewSegments: (diffLines: DiffLine[], contextLines: number, isCollapsedMode: boolean) => DiffViewSegment[];