▸case-01 We are currently running an outdated React 16 application and want to move up to React 18 across our monorepo. Please generate a multi-stage migration plan that details how to audit current package conflicts, the exact sequence for updating packages incrementally, and the testing steps needed at each phase to verify compatibility without breaking existing UI components. | fail→fail | 35,553 | 37,168 | +5% | 1 | 1 | 0% | 5,845 | 5,272 | -10% | 0 | 0 | — |
▸case-02 Our Node.js project has several high-severity security vulnerabilities reported in transitive packages, but bumping them directly causes peer dependency mismatches. Can you provide a detailed report outlining how to analyze the package tree, resolve lock file mismatches safely, and set up Dependabot or Renovate rules to keep these packages updated automatically in the future? | fail→fail | 31,939 | 17,824 | -44% | 1 | 1 | 0% | 5,278 | 3,750 | -29% | 0 | 0 | — |
▸case-03 We need to upgrade our core UI design system library to its latest major release, which introduces multiple breaking API changes. Please outline an actionable procedure for identifying API surface diffs, running automated transformation codemods, and setting up unit and visual regression tests to confirm the migration went smoothly. | fail→fail | 20,563 | 25,208 | +23% | 1 | 1 | 0% | 3,404 | 5,336 | +57% | 0 | 0 | — |
▸case-04 We have a dependency specifier listed as ^2.3.1 in our package.json file. Developers on the team are debating whether a release of version 2.4.0 or 3.0.0 will be installed when running package update commands. Explain what semantic version range ^2.3.1 allows and whether version 2.4.0 or 3.0.0 is included. | pass→pass | 9,605 | 6,263 | -35% | 1 | 1 | 0% | 1,504 | 1,901 | +26% | 0 | 0 | — |
▸case-05 A teammate wants to lock down package updates in package.json using ~2.3.1 to prevent any minor feature changes from breaking our build. Explain what version range ~2.3.1 matches and whether version 2.4.0 can be installed under this specifier. | pass→pass | 10,432 | 7,751 | -26% | 1 | 1 | 0% | 1,553 | 1,922 | +24% | 0 | 0 | — |
▸case-06 We are configuring a mission-critical library in package.json and want to prohibit any automatic patch or minor updates during npm install. How should version 2.3.1 be specified in package.json to guarantee exact version matching? | pass→pass | 8,533 | 6,220 | -27% | 1 | 1 | 0% | 1,246 | 1,542 | +24% | 0 | 0 | — |
▸case-07 When upgrading an express middleware package, npm fails with an invalid peer dependency error because express is still at v4 while the plugin demands express v5. The team wants to use --force immediately to bypass it in CI. What is the proper procedure to resolve peer dependency mismatches safely without risking runtime crashes? | fail→fail | 14,486 | 17,067 | +18% | 1 | 1 | 0% | 2,427 | 3,527 | +45% | 0 | 0 | — |
▸case-08 We want to automate dependency updates in GitHub using Dependabot, but we want to separate security patch updates from major version updates to prevent unexpected breaking changes. Describe the configuration setup for dependabot.yml to manage update schedules and version group rules. | fail→fail | 16,531 | 14,292 | -14% | 1 | 1 | 0% | 2,511 | 3,203 | +28% | 0 | 0 | — |
▸case-09 Our repository is a large pnpm workspace monorepo. We want to configure automated PRs for minor dependency updates grouped by package family, while requiring manual approval or separate PRs for major updates. Outline the key configuration fields required for this setup. | fail→fail | 20,155 | 11,792 | -41% | 1 | 1 | 0% | 3,054 | 2,968 | -3% | 0 | 0 | — |
▸case-10 During a major framework upgrade, team members edited package.json manually and committed changes without running package manager commands, leading to out-of-sync lockfiles and broken CI builds. What step-by-step verification and lockfile management protocol should be enforced? | fail→fail | 12,638 | 21,538 | +70% | 1 | 1 | 0% | 2,655 | 3,899 | +47% | 0 | 0 | — |
▸case-11 We are upgrading styled-components across a component library containing 150 UI elements. Unit tests pass, but we are worried about subtle CSS layout glitches or pixel shifts. What testing methodology specifically addresses layout and visual drift after major UI library upgrades? | fail→fail | 19,359 | 11,279 | -42% | 1 | 1 | 0% | 2,604 | 2,662 | +2% | 0 | 0 | — |
▸case-12 We are upgrading Next.js from version 12 to 13, which replaces the legacy Image component import with a new API across hundreds of files. Doing this manually will take days and introduce human error. What automated approach handles large-scale code transformations for breaking API changes? | fail→fail | 14,386 | 13,741 | -4% | 1 | 1 | 0% | 2,405 | 3,196 | +33% | 0 | 0 | — |
▸case-13 In our monorepo, three different sub-packages use three different major versions of lodash (v3, v4, v4.17). This inflates bundle size and creates typing conflicts. How should we plan a workspace-wide dependency alignment upgrade? | fail→fail | 19,016 | 22,539 | +19% | 1 | 1 | 0% | 3,425 | 4,493 | +31% | 0 | 0 | — |
▸case-14 We are upgrading a database ORM dependency where breaking changes require altering function signatures and renaming configuration keys across 80 service modules, but no official codemod exists. What strategy should we use to automate this custom transformation safely? | fail→fail | 15,934 | 21,431 | +34% | 1 | 1 | 0% | 2,620 | 4,367 | +67% | 0 | 0 | — |
▸case-15 Before updating a key authentication library from major version 4 to 5, how should engineering teams systematically identify breaking changes, removed methods, and changed default options before touching any code? | fail→fail | 18,233 | 20,006 | +10% | 1 | 1 | 0% | 3,036 | 3,388 | +12% | 0 | 0 | — |
▸case-16 We have updated several core networking and HTTP client dependencies in our web application. Unit tests with mocked network responses are all passing. What additional testing layer is required to ensure real network flows and authentication tokens work end-to-end? | fail→fail | 11,992 | 15,381 | +28% | 1 | 1 | 0% | 1,974 | 3,303 | +67% | 0 | 0 | — |
▸case-17 Our team wants to upgrade a legacy web framework across a critical enterprise application. We want to avoid a 'big bang' update that blocks development for weeks. Describe the initial planning phase steps required prior to executing code changes. | fail→fail | 16,626 | 15,040 | -10% | 1 | 1 | 0% | 2,378 | 2,899 | +22% | 0 | 0 | — |
▸case-18 We have completed the planning phase for upgrading our application stack. We are now entering the execution phase. What best practice sequence should be followed during incremental package updates to isolate failures? | fail→fail | 13,877 | 15,803 | +14% | 1 | 1 | 0% | 2,316 | 3,036 | +31% | 0 | 0 | — |
▸case-19 All package versions have been bumped in package.json and the build succeeds. What comprehensive validation phase steps must be completed before merging the dependency upgrade branch into main? | fail→fail | 16,931 | 17,692 | +4% | 1 | 1 | 0% | 2,463 | 3,572 | +45% | 0 | 0 | — |
▸case-20 We need to add a new user login endpoint to our Express application that validates passwords with bcrypt and returns a JWT token upon successful authentication. Please write the full Express route handler implementation. | pass→pass | 14,821 | 9,766 | -34% | 1 | 1 | 0% | 2,391 | 2,156 | -10% | 0 | 0 | — |
▸case-21 Our frontend team needs to build a responsive navigation header bar that aligns a logo on the left and navigation links on the right using CSS Flexbox. Provide the CSS styles and HTML structure to achieve this layout. | pass→pass | 10,118 | 10,408 | +3% | 1 | 1 | 0% | 2,074 | 2,660 | +28% | 0 | 0 | — |
▸case-22 We are starting a brand new Node.js project from scratch and evaluating whether to use Winston or Pino for application logging based on performance overhead and structured JSON format support. Provide a comparison of these two logging frameworks. | pass→pass | 21,366 | 12,897 | -40% | 1 | 1 | 0% | 3,030 | 2,875 | -5% | 0 | 0 | — |