Gatsby Source Build Date

The `gatsby-source-build-date` plugin, currently at version 1.0.1, provides a straightforward mechanism for integrating the site's compilation timestamp into Gatsby's internal GraphQL API. This enables developers to easily display a "Last Updated" or "Last Built" date in any component or page without manual updates. Unlike its predecessor, `gatsby-plugin-build-date`, this hard fork leverages Node.js's native `Intl.DateTimeFormat` for date internationalization and formatting, eliminating the dependency on third-party date libraries. This approach offers robust localization capabilities, allowing developers to specify `locales` and `options` directly in their `gatsby-config.js` for precise date string representation. The plugin makes the build date available as a `buildDate` node in the GraphQL schema, which can then be queried and formatted using Gatsby's standard GraphQL `formatString` arguments for `Date` types. It is specifically designed to reflect the timestamp of the entire site build process, not individual file modification times. As a Gatsby plugin, its release cadence is generally tied to the stability of the core Gatsby ecosystem, with updates typically addressing compatibility or minor enhancements rather than frequent breaking changes, especially given its reliance on a core Node.js API.