/**
 * Predicates for the test environment under which a UniDriver is running.
 *
 * Callers pass the result of `await base.getNative()` and branch the code path
 * themselves — this module owns detection only, never dispatch.
 *
 * - **jest** (jsdom): `getNative()` returns a DOM `HTMLElement`.
 * - **sled-2** (Puppeteer): `getNative()` returns `{ element, page, selector }`;
 *   `page.evaluate` is the original marker used across the codebase.
 * - **sled-3** (Playwright): `getNative()` returns a Playwright `Locator`, which
 *   exposes a `.locator(selector)` method (Puppeteer's `ElementHandle` does not).
 */
export declare const isSled2: (native: unknown) => boolean;
export declare const isSled3: (native: unknown) => boolean;
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