Why Code Formatting Matters

Consistent formatting is not about aesthetics — it reduces cognitive load. Studies show developers spend 60-70% of their time reading code, not writing it. Uniform indentation, spacing, and line breaks let your brain focus on logic rather than parsing structure. This is why teams enforce formatters like Prettier: not because one style is objectively better, but because a single consistent style eliminates an entire category of mental overhead.

Beautify vs. Minify: When to Use Each

Beautifying adds whitespace and structure for human readability — essential during development and code review. Minification strips all unnecessary characters (spaces, newlines, comments) to reduce file size for production. A typical JavaScript file shrinks 30-50% through minification alone. Combined with gzip compression (which works even better on minified code), you can reduce transfer sizes by 70-80%.

Indentation: Tabs vs. Spaces

The tabs-vs-spaces debate has a practical dimension: tabs render at the viewer's preferred width (accessibility benefit), while spaces guarantee identical appearance everywhere. Most JavaScript/TypeScript projects use 2 spaces (npm, React, Vue). Python mandates 4 spaces. Go uses tabs exclusively. The correct answer for your project is whatever your team's formatter enforces — consistency matters more than the choice itself.