has className='App-logo' and alt='logo' [13.53ms] ✓ render a component > exists link element has href='https://reactjs.org/' [1.56ms] ✓ render a component > if exists link element has target='_blank' then it has rel='noopener noreferrer' [0.36ms] 3 pass 0 fail 7 expect() calls Ran 3 tests across 1 files. [436.00ms] PASS src/App.test.js render a component ✓ exists img element has className='App-logo' and alt='logo' (80 ms) ✓ exists link element has href='https://reactjs.org/' (32 ms) ✓ if exists link element has target='_blank' then it has rel='noopener noreferrer' (10 ms) Test Suites: 1 passed, 1 total Tests: 3 passed, 3 total Snapshots: 0 total Time: 1.155 s Jest Time: 1.155 s Bun Ran 3 tests across 1 files. [436.00ms] 約2.64倍の速度差
334 packages in 9s $ bun i 331 packages installed [1.60s] bun yarn 約6.6倍 npm 約5.92倍 pnpm 約7.75倍※ create-next-app の初期状態で 差があるので、 もっと大規模だとかなりの 差になることが予想できる! $ yarn ✨ Done in 10.56s. $ pnpm i Done in 12.4s