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Languages & runtimes · #javascript
Blanket core-js imports bloat bundles and risk overriding natives. Targeted modular imports with runtime feature detection give smaller builds and safer polyfills for web and Node apps.
Tree-shaking in Rollup depends on a precise sideEffects contract. Learn how ESM boundaries, named exports, and visualizer audits keep library bundles lean.
Stop bloating your JS bundles with unnecessary polyfills. Learn how to use @babel/preset-env with 'useBuiltIns: usage' and core-js to inject only the code your target browsers actually need.
Swiper breakpoints change slidesPerView and spacing by viewport width without breaking loop mode or pagination.
Modify Chart.js data arrays in place and call chart.update() to animate transitions without destroying the canvas. A practical look at animation modes, streaming windows, and the performance limits of frequent updates.
Add a MaterializeCSS sidenav that slides from the left, triggered by a button, with vanilla JavaScript initialization and verification steps.
Stop shipping every core-js polyfill. Import only the ECMAScript features your app uses and verify the savings in your production bundle.
Computed observables in Knockout.js work well as pure derived state, but side effects, missing disposal, and eager evaluation create predictable failure modes. This architecture note covers the smallest safe design, trust boundaries, and operational checks.
Learn how to use RxJS shareReplay to eliminate redundant HTTP requests and implement efficient client-side caching with a focus on the critical refCount configuration.
corejs
rollup
swiper
chartjs
materializecss
rxjs