port python backends to ts

src/asserts/index.ts

@@ -0,0 +1,61 @@
+/**
+ * Assertion DSL for Sentience SDK.
+ *
+ * This module provides a Playwright/Cypress-like assertion API for verifying
+ * browser state in agent verification loops.
+ *
+ * Main exports:
+ * - E: Element query builder (filters elements by role, text, href, etc.)
+ * - expect: Expectation builder (creates predicates from queries)
+ * - inDominantList: Query over dominant group elements (ordinal access)
+ *
+ * @example
+ * ```typescript
+ * import { E, expect, inDominantList } from '@anthropic/sentience-ts/asserts';
+ *
+ * // Basic presence assertions
+ * await runtime.assert(
+ *   expect(E({ role: "button", textContains: "Save" })).toExist(),
+ *   "save_button_visible"
+ * );
+ *
+ * // Visibility assertions
+ * await runtime.assert(
+ *   expect(E({ textContains: "Checkout" })).toBeVisible(),
+ *   "checkout_visible"
+ * );
+ *
+ * // Global text assertions
+ * await runtime.assert(
+ *   expect.textPresent("Welcome back"),
+ *   "user_logged_in"
+ * );
+ * await runtime.assert(
+ *   expect.noText("Error"),
+ *   "no_error_message"
+ * );
+ *
+ * // Ordinal assertions on dominant group
+ * await runtime.assert(
+ *   expect(inDominantList().nth(0)).toHaveTextContains("Show HN"),
+ *   "first_item_is_show_hn"
+ * );
+ *
+ * // Task completion
+ * await runtime.assertDone(
+ *   expect.textPresent("Order confirmed"),
+ *   "checkout_complete"
+ * );
+ * ```
+ *
+ * The DSL compiles to existing Predicate functions, so it works seamlessly
+ * with AgentRuntime.assert() and assertDone().
+ */
+
+// Query builders
+export { E, ElementQuery, ListQuery, MultiQuery, inDominantList } from './query';
+export type { EOptions, MultiTextPredicate } from './query';
+
+// Expectation builders
+export { expect, ExpectBuilder, EventuallyWrapper, withEventually } from './expect';
+export type { EventuallyConfig } from './expect';