/** RE2-compatible slug pattern (matches Contentful field validation). */
export declare const SLUG_REGEXP_PATTERN = "^[^/]+(?:\\/[^/]+)*$";
export declare const SLUG_VALIDATION_MESSAGE = "Slug must not start or end with /. Use one or more segments separated by / (e.g. part1, part1/part2, or part1/part2/part3). Home page slug is \"index\".";
export declare function isSlugFieldId(fieldId: string): boolean;
/** Returns an error message when invalid, or null when the value matches the slug format. */
export declare function validateSlugFieldValue(value: string): string | null;
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