Function waitFor

nodejs/test/e2e/session_lifecycle.e2e.test.ts:14–24

* Polls until predicate returns true or deadline expires. Used in lieu of arbitrary * `setTimeout` waits for "session flushed to disk" so fast machines exit immediately * and slow CI machines still get up to `timeoutMs` before the test fails.

(
    predicate: () => Promise<boolean> | boolean,
    timeoutMs = 10_000
)

 * and slow CI machines still get up to `timeoutMs` before the test fails.
 */
async function waitFor(
    predicate: () => Promise<boolean> | boolean,
    timeoutMs = 10_000
): Promise<void> {
    const deadline = Date.now() + timeoutMs;
    while (Date.now() < deadline) {
        if (await predicate()) return;
        await new Promise((r) => setTimeout(r, 50));
    }
    throw new Error(`waitFor: condition not met within ${timeoutMs}ms`);
}

describe("Session Lifecycle", async () => {
    const { copilotClient: client } = await createSdkTestContext();