Bas Milius utils

@basmilius/utils is a set of ~45 small, tree-shakeable, framework-agnostic TypeScript helpers: dates (Luxon), colors, numbers and math, downloads, DOM, timing, geo/astro and a seeded PRNG. This skill exists so you reach for what is already there instead of reinventing it, and dodge the per-function traps. The full, categorized catalog with signatures is references/function-index.md.

1. The rule: look before you write one

Before hand-rolling a date formatter, a color conversion, a debounce, a download trigger, a number formatter or a point-in-polygon test, check the catalog. These helpers are stable, single-purpose and already used across the projects; a local copy just drifts from them.

2. Import and shape