Fe Btools V5 -new Version- -

export default 'full' target: 'es2022', injectRuntime: true, plugins: ['dom-viz', 'state-sniffer'], output: reports: './.btools/reports', timeline: './.btools/timeline.json'

export default function customMetricPlugin(btools) btools.registerMetric('customFPS', () => return measureFrameRate(); ); FE Btools V5 -NEW VERSION-

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Use Deep mode in staging, Light in dev, disable in production (automatic with NODE_ENV=production ). 7. CLI Reference btools-v5 profile --url http://localhost:3000 --duration 10s btools-v5 snapshot --selector .app --output ./snap btools-v5 doctor # checks config & compatibility btools-v5 clean # removes all .btools cache 8. Extending with Plugins Plugin API example (custom metric collector): export default 'full' target: 'es2022'