export interface SourceRange {
    start: number;
    end: number;
}
export interface SourceLocation {
    line: number;
    column: number;
}
export interface CSSStatementEnd {
    end: number;
    reason: 'semicolon' | 'block' | 'eof';
    delimiterRange?: SourceRange;
}
export declare function escapeRegExp(source: string): string;
export declare function cssEscape(value: string): string;
export declare function isCSSIdentChar(char: string | undefined): boolean;
export declare function isCSSIdentStart(char: string | undefined): boolean;
export declare function skipCSSWhitespace(source: string, index: number): number;
export declare function readCSSIdent(source: string, index: number): {
    start: number;
    end: number;
    value: string;
};
export declare function createSourceLocationResolver(source: string): (loc: SourceLocation | undefined) => number;
export declare function findCSSStatementEnd(source: string, start: number): CSSStatementEnd;
export declare function findCSSClosingQuote(source: string, start: number, quote: string, limit?: number): number;
export declare function findCSSBlockEnd(source: string, open: number): number;
export declare function removeSourceRanges(source: string, ranges: SourceRange[]): string;
export declare function replaceSourceRanges(source: string, ranges: (SourceRange & {
    replacement: string;
})[]): string;