/**
 * @copyright Sister Software.
 * @license AGPL-3.0
 * @author Teffen Ellis, et al.
 */
import type { CamelCase, SnakeCase } from "type-fest";
/**
 * Converts a name to snake_case, unless the name is already in all caps.
 */
export declare function smartSnakeCase<T extends string>(name: T): T extends Uppercase<T> ? T : SnakeCase<T>;
/**
 * Converts a name to camelCase, unless the name is already in all caps.
 */
export declare function smartCamelCase<T extends string>(name: T): T extends Uppercase<T> ? T : CamelCase<T>;
/**
 * Predicate to determine if a given string is uniformly cased, i.e. all uppercase or all lowercase.
 */
export declare function isUniformlyCased(input: string | null): boolean;
/**
 * Capitalizes a string, unless the string is uniformly cased, or an email address.
 */
export declare function smartCapitalCase(input: string): string;
/**
 * Python `str.isupper()`: at least one cased character, and every cased character uppercase.
 *
 * Distinct from {@link isUniformlyCased}, which reports `true` for a string with no cased characters at all — `"123"` is
 * uniformly cased and is NOT `isupper()`. Ports that gate a titlecase on the Python predicate need this one.
 */
export declare function pyIsUpper(input: string): boolean;
/**
 * Python `str.title()`: titlecase the first cased character of each run, lowercase the rest.
 *
 * Not `capitalCase` from change-case, which splits on word boundaries and drops punctuation — Python titlecases
 * `"o'brien"` to `"O'Brien"` because the apostrophe ends a cased run.
 */
export declare function pyTitle(input: string): string;
/**
 * Titlecase a SHOUTED string, leave anything else alone — the shape source dumps use when a field arrives ALL CAPS.
 */
export declare function titlecaseIfUpper(input: string): string;
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