felixge/node-dateformat

Health v2 · maintenance only

Adoption not part of the score

1292 stars · 155 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Node.js package implementing Steven Levithan's dateFormat() function for formatting dates with customizable mask patterns. It supports named masks, custom masks, UTC conversion, and ISO 8601 week/day-of-week output.

Use cases

• format dates as strings in node.js
• convert a Date to ISO 8601 format
• format dates with custom mask patterns
• convert local time to UTC when formatting
• get ISO week number of the year
• format a date string like 'Saturday, June 9th, 2007'

When to choose

• you need lightweight, flexible date formatting with mask patterns in Node.js
• you want named or custom format masks without extending Date.prototype
• you need UTC conversion or ISO 8601 week/day formatting

When to avoid

• you need locale-aware internationalized date formatting
• you need date parsing, manipulation, or timezone arithmetic rather than formatting
• you are using modern Temporal API or a full library like date-fns or dayjs

Facets

library · maturity maintenance

date-time formatter developer-tools web-development date-formatting npm-package date-masks command-line nodejs javascript

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