/**
 * Shared i18n utilities for sanitization and validation
 */
/**
 * Escapes a string for use in a double-quoted YAML scalar.
 * Replaces backslashes and double quotes.
 */
export declare function escapeForYaml(value: string): string;
/**
 * Sanitizes a single line of i18n YAML.
 * Consolidates logic from I18nSanitizer and I18nCompileValidator.
 *
 * Handles:
 * - Tabs to spaces
 * - Unclosed double/single quotes
 * - Trailing text after closing quotes
 * - Special YAML characters at start of scalar (%, &, *, !, |, >, -)
 * - Trailing colons or colon-space in unquoted scalars (preventing nested mappings)
 */
export declare function sanitizeI18nLine(line: string): string;
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