Question 1

How do I format dates in different locales with Tempo?

Accepted Answer

Use Tempo's format function with locale options, such as tempo.format(date, 'en-US') for US English. It leverages Intl.DateTimeFormat under the hood, so ensure your environment supports the desired locales for accurate formatting.

Question 2

Does Tempo handle timezone conversions easily?

Accepted Answer

Yes, Tempo provides simple APIs for timezone handling using Intl.DateTimeFormat, allowing conversions with minimal code. However, it depends on the environment's Intl support, so test compatibility in target browsers or Node.js versions.

Question 3

Tempo vs date-fns: which is better for reducing bundle size?

Accepted Answer

Tempo is often lighter due to its tree-shakable design and native Date integration, with full features around 2KB. date-fns is more feature-rich but can be larger if not tree-shaken aggressively. For minimal footprints, Tempo has an edge, but date-fns offers more utilities.

Question 4

Is Tempo fully compatible with TypeScript?

Accepted Answer

Yes, Tempo is built with TypeScript and provides full type definitions, making it a great choice for TypeScript projects. The README mentions it as a library for JavaScript and TypeScript, ensuring type safety out of the box.

Question 5

What's the performance impact of using Tempo in a React app?

Accepted Answer

Tempo is lightweight and tree-shakable, so it adds minimal overhead—around 2KB for international formatting. Since it uses native Date objects and Intl, performance is generally good, but monitor bundle sizes and Intl support in your target environments.

Question 6

How do I parse a date string into a Date object with Tempo?

Accepted Answer

Tempo includes parsing utilities like tempo.parse() that convert date strings to native Date objects. Specify the format or locale as needed, but note that parsing accuracy can vary based on the Intl implementation and input string.

Question 7

Can Tempo manipulate dates, like adding days or months?

Accepted Answer

Yes, Tempo has manipulation functions such as addDays or subtractMonths that work on native Date objects. However, since Date objects are mutable, be cautious of side-effects when chaining operations or sharing dates across components.

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