I built 17 calculators without a single JavaScript dependency on the client.
Hace unos meses empecé a construir Utiligo , una colección de calculadoras en español: horas extras, IVA, aguinaldo, préstamos, IMC. La premisa técnica era simple y me la tomé en serio: cero dependencias de JavaScript en el navegador . Sin React, sin frameworks de UI, sin librerías de gráficos. Ni una. Esto es lo que aprendí construyéndolo. Por qué cero dependencias La mayoría de estas…
The creator of Utiligo, a collection of Spanish-language calculators, shares their experience building the tool with zero JavaScript dependencies. The project, which includes calculators for overtime, VAT, and loans, was built using Astro and Cloudflare Pages to generate static HTML pages that work before loading. The decision to avoid dependencies was driven by the need to minimize page load times, particularly for users in Latin America with irregular mobile connections.
However, this approach required manual coding of features like graphics and a QR generator, and presented challenges in maintaining accuracy when dealing with regulatory data, such as labour laws and tax rates, which can vary by country.
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