Biome 2.4.2

2.4.2

Patch Changes

• #9103 fc9850c Thanks @dyc3! - Fixed #9098: useImportType no longer incorrectly flags imports used in Svelte control flow blocks ({#if}, {#each}, {#await}, {#key}) as type-only imports.

• #9106 f4b7296 Thanks @dyc3! - Updated rule source metadata for rules from html-eslint.

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noConditionalExpect. This rule disallows conditional expect() calls inside tests, which can lead to tests that silently pass when assertions never run.

  // Invalid - conditional expect may not run
  test("conditional", async ({ page }) => {
    if (someCondition) {
      await expect(page).toHaveTitle("Title");
    }
  });
  
  // Valid - unconditional expect
  test("unconditional", async ({ page }) => {
    await expect(page).toHaveTitle("Title");
  });
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightElementHandle. Prefers locators to element handles.

  const el = await page.$(".btn");
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightEval. Disallows page.$eval() and page.$$eval() methods.

  await page.$eval(".btn", (el) => el.textContent);
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightForceOption. Disallows the force option on user interactions.

  await locator.click({ force: true });
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightMissingAwait. Enforces awaiting async Playwright APIs.

  const el = page.locator(".btn");
  el.click(); // Missing await
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightNetworkidle. Disallows deprecated networkidle wait option.

  await page.goto(url, { waitUntil: "networkidle" });
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightPagePause. Disallows page.pause() debugging calls in committed code.

  await page.pause();
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightUselessAwait. Disallows unnecessary await on synchronous Playwright methods.

  // Incorrect - locator() is synchronous
  const loc = await page.locator(".btn");
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightWaitForNavigation. Prefers modern navigation APIs over deprecated waitForNavigation().

  await page.waitForNavigation();
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightWaitForSelector. Prefers locators over deprecated waitForSelector().

  await page.waitForSelector(".btn");
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule noPlaywrightWaitForTimeout. Disallows hard-coded timeouts with waitForTimeout().

  await page.waitForTimeout(5000);
  

• #8960 4a5ff40 Thanks @abossenbroek! - Enhanced noSkippedTests to detect Playwright patterns (.fixme, test.describe, test.step, bracket notation, bare calls). Consolidated noPlaywrightSkippedTest into this rule.

• #9101 0c0fb6f Thanks @siketyan! - Fixed #9080: The noUnusedVariables rule no longer reports a top-level Props interface or type alias as unused in Astro files.

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule useExpect. This rule ensures that test functions contain at least one expect() assertion.

  // Invalid - test without assertion
  test("no assertion", async ({ page }) => {
    await page.goto("/");
  });
  
  // Valid - test with assertion
  test("has assertion", async ({ page }) => {
    await expect(page).toHaveTitle("Title");
  });
  

• #8960 4a5ff40 Thanks @abossenbroek! - Added the nursery rule usePlaywrightValidDescribeCallback. Validates that describe callback signatures are not async.

  test.describe("suite", async () => {});
  

What's Changed

• fix(lint): don't report Props interface as unused in Astro files by @siketyan in https://github.com/biomejs/biome/pull/9101
• fix(service): parse text expressions in svelte control flow blocks by @dyc3 in https://github.com/biomejs/biome/pull/9103
• feat(migrate): more metadata for rules from html-eslint by @dyc3 in https://github.com/biomejs/biome/pull/9106
• feat(lint): add Playwright ESLint rules by @abossenbroek in https://github.com/biomejs/biome/pull/8960
• ci: release by @github-actions[bot] in https://github.com/biomejs/biome/pull/9104

New Contributors

• @abossenbroek made their first contribution in https://github.com/biomejs/biome/pull/8960

Full Changelog: https://github.com/biomejs/biome/compare/@biomejs/biome@2.4.1...@biomejs/biome@2.4.2