/**
 * Backend AST Printer – Identifier and Escape Utilities
 *
 * String/char escape helpers, trivia printing, keyword sets,
 * identifier escaping, qualified name escaping, prefix unary
 * separator detection, and numeric literal formatting.
 */
import type { CSharpExpressionAst, CSharpQualifiedNameAst, CSharpTriviaAst } from "./types.js";
export declare const escapeCSharpStringLiteral: (value: string) => string;
export declare const escapeCSharpCharLiteral: (value: string) => string;
export declare const printTrivia: (trivia: CSharpTriviaAst) => string;
export declare const needsPrefixUnarySeparator: (operatorToken: string, operand: CSharpExpressionAst) => boolean;
export declare const printNumericLiteral: (expr: Extract<CSharpExpressionAst, {
    kind: "numericLiteralExpression";
}>) => string;
export declare const CSHARP_KEYWORDS: Set<string>;
/**
 * C# predefined type keywords that should NOT be escaped with @
 * when used in type position (they are the type name itself).
 */
export declare const PREDEFINED_TYPE_KEYWORDS: Set<string>;
/**
 * Escape a C# identifier if it's a keyword.
 * Preserves predefined type keywords when used as types.
 */
export declare const escapeIdentifier: (name: string) => string;
/**
 * Escape segments in a qualified name AST.
 */
export declare const escapeQualifiedName: (name: CSharpQualifiedNameAst, preservePredefinedTypeKeywords?: boolean) => string;
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