/**
 * Stable comparators for explicit `Array.prototype.sort` calls.
 *
 * A bare `.sort()` sorts by UTF-16 code unit, which is deterministic but easy to
 * misread as accidental. `.sort(compareStrings)` states that intent, and orders
 * identically to a bare `.sort()` on a `string[]`.
 *
 * Prefer this over `String.prototype.localeCompare` anywhere the order reaches a
 * cache key, a content hash, a generated artifact, or a snapshot assertion:
 * `localeCompare` depends on the host's locale and ICU build, so the same input
 * can sort differently on a developer machine and in CI.
 */
export declare function compareStrings(left: string, right: string): number;
/**
 * Compares by an extracted string key, using {@link compareStrings}.
 */
export declare function compareBy<T>(select: (value: T) => string): (left: T, right: T) => number;
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