Upgrade to Astro v2
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This guide will help you migrate from Astro v1 to Astro v2.
Need to upgrade an older project to v1? See our older migration guide.
Upgrade Astro
Section titled Upgrade AstroUpdate your project’s version of Astro to the latest version using your package manager. If you’re using Astro integrations, please also update those to the latest version.
Astro v2.0 Breaking Changes
Section titled Astro v2.0 Breaking ChangesAstro v2.0 includes some breaking changes, as well as the removal of some previously deprecated features. If your project doesn’t work as expected after upgrading to v2.0, check this guide for an overview of all breaking changes and instructions on how to update your codebase.
See the changelog for full release notes.
Removed: Support for Node 14
Section titled Removed: Support for Node 14Node 14 is scheduled to reach its End of Life in April 2023.
Astro v2.0 drops Node 14 support entirely, so that all Astro users can take advantage of Node’s more modern features.
What should I do?
Section titled What should I do?Check that both your development environment and your deployment environment are using Node 16.12.0
or later.
-
Check your local version of Node using:
If your local development environment needs upgrading, install Node.
-
Check your deployment environment’s own documentation to verify that they support Node 16.
You can specify Node
16.12.0
for your Astro project either in a dashboard configuration setting, or a.nvmrc
file.
Reserved: src/content/
Section titled Reserved: src/content/Astro v2.0 now includes the Collections API for organizing your Markdown and MDX files into content collections. This API reserves src/content/
as a special folder.
What should I do?
Section titled What should I do?Rename an existing src/content/
folder to avoid conflicts. This folder, if it exists, can now only be used for content collections.
Changed: Astro.site
trailing slash
Section titled Changed: Astro.site trailing slashIn v1.x, Astro ensured the URL you set as site
in astro.config.mjs
always had a trailing slash when accessed using Astro.site
.
Astro v2.0 no longer modifies the value of site
. Astro.site
will use the exact value defined, and a trailing slash must be specified if desired.
What should I do?
Section titled What should I do?In astro.config.mjs
, add a trailing slash to the URL set in site
.
Changed: _astro/
folder for build assets
Section titled Changed: _astro/ folder for build assetsIn v1.x, assets were built to various locations, including assets/
, chunks/
, and to the root of the build output.
Astro v2.0 moves and unifies the location of all build output assets to a new _astro/
folder.
Директорияdist/
Директория_astro
- client.9218e799.js
- index.df3f880e0.css
You can control this location with the new build.assets
configuration option.
What should I do?
Section titled What should I do?Update your deployment platform configuration if it relies on the location of these assets.
Changed: Markdown plugin configuration
Section titled Changed: Markdown plugin configurationRemoved: extendDefaultPlugins
Section titled Removed: extendDefaultPluginsIn v1.x, Astro used markdown.extendDefaultPlugins
to re-enable Astro’s default plugins when adding your own Markdown plugins.
Astro v2.0 removes this configuration option entirely because its behavior is now the default.
Applying remark and rehype plugins in your Markdown configuration no longer disables Astro’s default plugins. GitHub-Flavored Markdown and Smartypants are now applied whether or not custom remarkPlugins
or rehypePlugins
are configured.
What should I do?
Section titled What should I do?Remove extendDefaultPlugins
in your configuration. This is now Astro’s default behavior in v2.0, and you can delete this line without any replacement.
Added: gfm
and smartypants
Section titled Added: gfm and smartypantsIn v1.x, you could choose to disable both of Astro’s default Markdown plugins (GitHub-Flavored Markdown and SmartyPants) by setting markdown.extendDefaultPlugins: false
.
Astro v2.0 replaces markdown.extendDefaultPlugins: false
with separate Boolean options to individually control each of Astro’s built-in default Markdown plugins. These are enabled by default and can be set to false
independently.
What should I do?
Section titled What should I do?Remove extendDefaultPlugins: false
and add the flags to disable each plugin individually instead.
markdown.gfm: false
disables GitHub-Flavored Markdownmarkdown.smartypants: false
disables SmartyPants
Changed: MDX plugin configuration
Section titled Changed: MDX plugin configurationReplaced: extendPlugins
changed to extendMarkdownConfig
Section titled Replaced: extendPlugins changed to extendMarkdownConfigIn v1.x, the MDX integration’s extendPlugins
option managed how your MDX files should inherit your Markdown configuration: all your Markdown configuration (markdown
), or Astro’s default plugins only (default
).
Astro v2.0 replaces the behavior controlled by mdx.extendPlugins
with three new, independently-configurable options that are true
by default:
mdx.extendMarkdownConfig
to inherit all or none of your Markdown configurationmdx.gfm
to enable or disable GitHub-Flavored Markdown in MDXmdx.smartypants
to enable or disable SmartyPants in MDX
What should I do?
Section titled What should I do?Delete extendPlugins: 'markdown'
in your configuration. This is now the default behavior.
Replace extendPlugins: 'defaults'
with extendMarkdownConfig: false
and add the separate options for GitHub-Flavored Markdown and SmartyPants to enable these default plugins individually in MDX.
Added: More MDX config options to match Markdown
Section titled Added: More MDX config options to match MarkdownAstro v2.0 allows you to now individually set every available Markdown configuration option (except drafts
) separately in your MDX integration configuration.
What should I do?
Section titled What should I do?Revisit your Markdown and MDX configuration and compare your existing config with the new options available.
Changed: Plugin access to frontmatter
Section titled Changed: Plugin access to frontmatterIn v1.x, remark and rehype plugins did not have access to user frontmatter. Astro merged plugin frontmatter with your file’s frontmatter, without passing the file frontmatter to your plugins.
Astro v2.0 gives remark and rehype plugins access to user frontmatter via frontmatter injection. This allows plugin authors to modify a user’s existing frontmatter, or compute new properties based on other properties.
What should I do?
Section titled What should I do?Check any remark and rehype plugins you have written to see whether their behavior has changed. Note that data.astro.frontmatter
is now the complete Markdown or MDX document’s frontmatter, rather than an empty object.
Changed: RSS Configuration
Section titled Changed: RSS ConfigurationIn v1.x, Astro’s RSS package allowed you to use items: import.meta.glob(...)
to generate a list of RSS feed items. This usage is now deprecated and will eventually be removed.
Astro v2.0 introduces a pagesGlobToRssItems()
wrapper to the items
property.
What should I do?
Section titled What should I do?Import, then wrap your existing function containing import.meta.glob()
with the pagesGlobToRssItems()
helper.
Changed: Svelte IDE support
Section titled Changed: Svelte IDE supportAstro v2.0 requires a svelte.config.js
file in your project if you are using the @astrojs/svelte
integration. This is needed to provide IDE autocompletion.
What should I do?
Section titled What should I do?Add a svelte.config.js
file to the root of your project:
For new users, this file will be added automatically when running astro add svelte
.
Removed: legacy.astroFlavoredMarkdown
Section titled Removed: legacy.astroFlavoredMarkdownIn v1.0, Astro moved the old Astro-Flavored Markdown (also known as Components in Markdown) to a legacy feature.
Astro v2.0 removes the legacy.astroFlavoredMarkdown
option completely. Importing and using components in .md
files will no longer work.
What should I do?
Section titled What should I do?Remove this legacy flag. It is no longer available in Astro.
If you were using this feature in v1.x, we recommend using the MDX integration which allows you to combine components and JSX expressions with Markdown syntax.
Removed: Astro.resolve()
Section titled Removed: Astro.resolve()In v0.24, Astro deprecated Astro.resolve()
for getting resolved URLs to assets that you might want to reference in the browser.
Astro v2.0 removes this option entirely. Astro.resolve()
in your code will cause an error.
What should I do?
Section titled What should I do?Resolve asset paths using import
instead. For example:
Removed: Astro.fetchContent()
Section titled Removed: Astro.fetchContent()In v0.26, Astro deprecated Astro.fetchContent()
for fetching data from your local Markdown files.
Astro v2.0 removes this option entirely. Astro.fetchContent()
in your code will cause an error.
What should I do?
Section titled What should I do?Use Astro.glob()
to fetch Markdown files, or convert to the Content Collections feature.
Removed: Astro.canonicalURL
Section titled Removed: Astro.canonicalURLIn v1.0, Astro deprecated Astro.canonicalURL
for constructing a canonical URL.
Astro v2.0 removes this option entirely. Astro.canonicalURL
in your code will cause an error.
What should I do?
Section titled What should I do?Use Astro.url
to construct a canonical URL.
Updated: Vite 4
Section titled Updated: Vite 4Astro v2.0 upgrades from Vite 3 to Vite 4, released in December 2022.
What should I do?
Section titled What should I do?There should be no changes to your code necessary! We’ve handled most of the upgrade for you inside of Astro; however, some subtle Vite behaviors may still change between versions.
Refer to the official Vite Migration Guide if you run into trouble.
Astro v2.0 Experimental Flags Removed
Section titled Astro v2.0 Experimental Flags RemovedRemove the following experimental flags from astro.config.mjs
:
These features are now available by default:
- Content collections as a way to manage your Markdown and MDX files with type-safety.
- Prerendering individual pages to static HTML when using SSR to improve speed and cacheability.
- A redesigned error message overlay.
Known Issues
Section titled Known IssuesThere are currently no known issues.
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