Configuration Reference

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The following reference covers all supported configuration options in Astro. To learn more about configuring Astro, read our guide on Configuring Astro.

import { defineConfig } from 'astro/config'

export default defineConfig({
  // your configuration options here...
})

Top-Level Options

site

Type: string

Your final, deployed URL. Astro uses this full URL to generate your sitemap and canonical URLs in your final build. It is strongly recommended that you set this configuration to get the most out of Astro.

{
  site: 'https://www.my-site.dev'
}

base

Type: string

The base path to deploy to. Astro will use this path as the root for your pages and assets both in development and in production build.

In the example below, astro dev will start your server at /docs.

{
  base: '/docs'
}

When using this option, all of your static asset imports and URLs should add the base as a prefix. You can access this value via import.meta.env.BASE_URL.

The value of import.meta.env.BASE_URL will be determined by your trailingSlash config, no matter what value you have set for base.

A trailing slash is always included if trailingSlash: "always" is set. If trailingSlash: "never" is set, BASE_URL will not include a trailing slash, even if base includes one.

Additionally, Astro will internally manipulate the configured value of config.base before making it available to integrations. The value of config.base as read by integrations will also be determined by your trailingSlash configuration in the same way.

In the example below, the values of import.meta.env.BASE_URL and config.base when processed will both be /docs:

{
   base: '/docs/',
   trailingSlash: "never"
}

In the example below, the values of import.meta.env.BASE_URL and config.base when processed will both be /docs/:

{
   base: '/docs',
   trailingSlash: "always"
}

trailingSlash

Type: 'always' | 'never' | 'ignore'
Default: 'ignore'

Set the route matching behavior of the dev server. Choose from the following options:

'always' - Only match URLs that include a trailing slash (ex: “/foo/“)
'never' - Never match URLs that include a trailing slash (ex: “/foo”)
'ignore' - Match URLs regardless of whether a trailing ”/” exists

Use this configuration option if your production host has strict handling of how trailing slashes work or do not work.

You can also set this if you prefer to be more strict yourself, so that URLs with or without trailing slashes won’t work during development.

{
  // Example: Require a trailing slash during development
  trailingSlash: 'always'
}

See Also:

build.format

redirects

Type: Record.<string, RedirectConfig>
Default: {}

Добавлено в: astro@2.9.0

Specify a mapping of redirects where the key is the route to match and the value is the path to redirect to.

You can redirect both static and dynamic routes, but only to the same kind of route. For example you cannot have a '/article': '/blog/[...slug]' redirect.

{
  redirects: {
    '/old': '/new',
    '/blog/[...slug]': '/articles/[...slug]',
  }
}

For statically-generated sites with no adapter installed, this will produce a client redirect using a <meta http-equiv="refresh"> tag and does not support status codes.

When using SSR or with a static adapter in output: static mode, status codes are supported. Astro will serve redirected GET requests with a status of 301 and use a status of 308 for any other request method.

You can customize the redirection status code using an object in the redirect config:

{
  redirects: {
    '/other': {
      status: 302,
      destination: '/place',
    },
  }
}

output

Type: 'static' | 'server'
Default: 'static'

Specifies the output target for builds.

'static' - Prerender all your pages by default, outputting a completely static site if none of your pages opt out of prerendering.
'server' - Use server-side rendering (SSR) for all pages by default, always outputting a server-rendered site.

import { defineConfig } from 'astro/config';

export default defineConfig({
  output: 'static'
})

See Also:

adapter

adapter

Type: AstroIntegration

Deploy to your favorite server, serverless, or edge host with build adapters. Import one of our first-party adapters for Netlify, Vercel, and more to engage Astro SSR.

See our On-demand Rendering guide for more on SSR, and our deployment guides for a complete list of hosts.

import netlify from '@astrojs/netlify';
{
  // Example: Build for Netlify serverless deployment
  adapter: netlify(),
}

See Also:

output

integrations

Type: AstroIntegration[]

Extend Astro with custom integrations. Integrations are your one-stop-shop for adding framework support (like Solid.js), new features (like sitemaps), and new libraries (like Partytown).

Read our Integrations Guide for help getting started with Astro Integrations.

import react from '@astrojs/react';
import tailwind from '@astrojs/tailwind';
{
  // Example: Add React + Tailwind support to Astro
  integrations: [react(), tailwind()]
}

root

Type: string
CLI: --root
Default: "." (current working directory)

You should only provide this option if you run the astro CLI commands in a directory other than the project root directory. Usually, this option is provided via the CLI instead of the Astro config file, since Astro needs to know your project root before it can locate your config file.

If you provide a relative path (ex: --root: './my-project') Astro will resolve it against your current working directory.

Examples

{
  root: './my-project-directory'
}

$ astro build --root ./my-project-directory

srcDir

Type: string
Default: "./src"

Set the directory that Astro will read your site from.

The value can be either an absolute file system path or a path relative to the project root.

{
  srcDir: './www'
}

publicDir

Type: string
Default: "./public"

Set the directory for your static assets. Files in this directory are served at / during dev and copied to your build directory during build. These files are always served or copied as-is, without transform or bundling.

The value can be either an absolute file system path or a path relative to the project root.

{
  publicDir: './my-custom-publicDir-directory'
}

outDir

Type: string
Default: "./dist"

Set the directory that astro build writes your final build to.

The value can be either an absolute file system path or a path relative to the project root.

{
  outDir: './my-custom-build-directory'
}

See Also:

build.server

cacheDir

Type: string
Default: "./node_modules/.astro"

Set the directory for caching build artifacts. Files in this directory will be used in subsequent builds to speed up the build time.

The value can be either an absolute file system path or a path relative to the project root.

{
  cacheDir: './my-custom-cache-directory'
}

compressHTML

Type: boolean
Default: true

This is an option to minify your HTML output and reduce the size of your HTML files.

By default, Astro removes whitespace from your HTML, including line breaks, from .astro components in a lossless manner. Some whitespace may be kept as needed to preserve the visual rendering of your HTML. This occurs both in development mode and in the final build.

To disable HTML compression, set compressHTML to false.

{
  compressHTML: false
}

scopedStyleStrategy

Type: 'where' | 'class' | 'attribute'
Default: 'attribute'

Добавлено в: astro@2.4

Specify the strategy used for scoping styles within Astro components. Choose from:

'where' - Use :where selectors, causing no specificity increase.
'class' - Use class-based selectors, causing a +1 specificity increase.
'attribute' - Use data- attributes, causing a +1 specificity increase.

Using 'class' is helpful when you want to ensure that element selectors within an Astro component override global style defaults (e.g. from a global stylesheet). Using 'where' gives you more control over specificity, but requires that you use higher-specificity selectors, layers, and other tools to control which selectors are applied. Using 'attribute' is useful when you are manipulating the class attribute of elements and need to avoid conflicts between your own styling logic and Astro’s application of styles.

security

Type: Record.<"checkOrigin", boolean> | undefined
Default: {checkOrigin: true}

Добавлено в: astro@4.9.0

Enables security measures for an Astro website.

These features only exist for pages rendered on demand (SSR) using server mode or pages that opt out of prerendering in static mode.

By default, Astro will automatically check that the “origin” header matches the URL sent by each request in on-demand rendered pages. You can disable this behavior by setting checkOrigin to false:

export default defineConfig({
  output: "server",
  security: {
    checkOrigin: false
  }
})

security.checkOrigin

Type: boolean
Default: true

Добавлено в: astro@4.9.0

Performs a check that the “origin” header, automatically passed by all modern browsers, matches the URL sent by each Request. This is used to provide Cross-Site Request Forgery (CSRF) protection.

The “origin” check is executed only for pages rendered on demand, and only for the requests POST, PATCH, DELETE and PUT with one of the following content-type headers: 'application/x-www-form-urlencoded', 'multipart/form-data', 'text/plain'.

If the “origin” header doesn’t match the pathname of the request, Astro will return a 403 status code and will not render the page.

vite

Type: ViteUserConfig

Pass additional configuration options to Vite. Useful when Astro doesn’t support some advanced configuration that you may need.

View the full vite configuration object documentation on vite.dev.

Examples

{
  vite: {
    ssr: {
      // Example: Force a broken package to skip SSR processing, if needed
      external: ['broken-npm-package'],
    }
  }
}

{
  vite: {
    // Example: Add custom vite plugins directly to your Astro project
    plugins: [myPlugin()],
  }
}

Build Options

build.format

Type: ('file' | 'directory' | 'preserve')
Default: 'directory'

Control the output file format of each page. This value may be set by an adapter for you.

'file': Astro will generate an HTML file named for each page route. (e.g. src/pages/about.astro and src/pages/about/index.astro both build the file /about.html)
'directory': Astro will generate a directory with a nested index.html file for each page. (e.g. src/pages/about.astro and src/pages/about/index.astro both build the file /about/index.html)
'preserve': Astro will generate HTML files exactly as they appear in your source folder. (e.g. src/pages/about.astro builds /about.html and src/pages/about/index.astro builds the file /about/index.html)

{
  build: {
    // Example: Generate `page.html` instead of `page/index.html` during build.
    format: 'file'
  }
}

Effect on Astro.url

Setting build.format controls what Astro.url is set to during the build. When it is:

directory - The Astro.url.pathname will include a trailing slash to mimic folder behavior. (e.g. /foo/)
file - The Astro.url.pathname will include .html. (e.g. /foo.html)

This means that when you create relative URLs using new URL('./relative', Astro.url), you will get consistent behavior between dev and build.

To prevent inconsistencies with trailing slash behaviour in dev, you can restrict the trailingSlash option to 'always' or 'never' depending on your build format:

directory - Set trailingSlash: 'always'
file - Set trailingSlash: 'never'

build.client

Type: string
Default: './client'

Controls the output directory of your client-side CSS and JavaScript when building a website with server-rendered pages. outDir controls where the code is built to.

This value is relative to the outDir.

{
  output: 'server',
  build: {
    client: './client'
  }
}

build.server

Type: string
Default: './server'

Controls the output directory of server JavaScript when building to SSR.

This value is relative to the outDir.

{
  build: {
    server: './server'
  }
}

build.assets

Type: string
Default: '_astro'

Добавлено в: astro@2.0.0

Specifies the directory in the build output where Astro-generated assets (bundled JS and CSS for example) should live.

{
  build: {
    assets: '_custom'
  }
}

See Also:

outDir

build.assetsPrefix

Type: string | Record.<string, string>
Default: undefined

Добавлено в: astro@2.2.0

Specifies the prefix for Astro-generated asset links. This can be used if assets are served from a different domain than the current site.

This requires uploading the assets in your local ./dist/_astro folder to a corresponding /_astro/ folder on the remote domain. To rename the _astro path, specify a new directory in build.assets.

To fetch all assets uploaded to the same domain (e.g. https://cdn.example.com/_astro/...), set assetsPrefix to the root domain as a string (regardless of your base configuration):

{
  build: {
    assetsPrefix: 'https://cdn.example.com'
  }
}

Added in: astro@4.5.0

You can also pass an object to assetsPrefix to specify a different domain for each file type. In this case, a fallback property is required and will be used by default for any other files.

{
  build: {
    assetsPrefix: {
      'js': 'https://js.cdn.example.com',
      'mjs': 'https://js.cdn.example.com',
      'css': 'https://css.cdn.example.com',
      'fallback': 'https://cdn.example.com'
    }
  }
}

build.serverEntry

Type: string
Default: 'entry.mjs'

Specifies the file name of the server entrypoint when building to SSR. This entrypoint is usually dependent on which host you are deploying to and will be set by your adapter for you.

Note that it is recommended that this file ends with .mjs so that the runtime detects that the file is a JavaScript module.

{
  build: {
    serverEntry: 'main.mjs'
  }
}

build.redirects

Type: boolean
Default: true

Добавлено в: astro@2.6.0

Specifies whether redirects will be output to HTML during the build. This option only applies to output: 'static' mode; in SSR redirects are treated the same as all responses.

This option is mostly meant to be used by adapters that have special configuration files for redirects and do not need/want HTML based redirects.

{
  build: {
    redirects: false
  }
}

build.inlineStylesheets

Type: 'always' | 'auto' | 'never'
Default: auto

Добавлено в: astro@2.6.0

Control whether project styles are sent to the browser in a separate css file or inlined into <style> tags. Choose from the following options:

'always' - project styles are inlined into <style> tags
'auto' - only stylesheets smaller than ViteConfig.build.assetsInlineLimit (default: 4kb) are inlined. Otherwise, project styles are sent in external stylesheets.
'never' - project styles are sent in external stylesheets

{
  build: {
    inlineStylesheets: `never`,
  },
}

build.concurrency

Type: number
Default: 1

Добавлено в: astro@4.16.0

The number of pages to build in parallel.

In most cases, you should not change the default value of 1.

Use this option only when other attempts to reduce the overall rendering time (e.g. batch or cache long running tasks like fetch calls or data access) are not possible or are insufficient. If the number is set too high, page rendering may slow down due to insufficient memory resources and because JS is single-threaded.

{
  build: {
    concurrency: 2
  }
}

Server Options

Customize the Astro dev server, used by both astro dev and astro preview.

{
  server: { port: 1234, host: true}
}

To set different configuration based on the command run (“dev”, “preview”) a function can also be passed to this configuration option.

{
  // Example: Use the function syntax to customize based on command
  server: ({ command }) => ({ port: command === 'dev' ? 4321 : 4000 })
}

server.host

Type: string | boolean
Default: false

Добавлено в: astro@0.24.0

Set which network IP addresses the server should listen on (i.e. non-localhost IPs).

false - do not expose on a network IP address
true - listen on all addresses, including LAN and public addresses
[custom-address] - expose on a network IP address at [custom-address] (ex: 192.168.0.1)

server.port

Type: number
Default: 4321

Set which port the server should listen on.

If the given port is already in use, Astro will automatically try the next available port.

{
  server: { port: 8080 }
}

server.open

Type: string | boolean
Default: false

Добавлено в: astro@4.1.0

Controls whether the dev server should open in your browser window on startup.

Pass a full URL string (e.g. “http://example.com”) or a pathname (e.g. “/about”) to specify the URL to open.

{
  server: { open: "/about" }
}

server.headers

Type: OutgoingHttpHeaders
Default: {}

Добавлено в: astro@1.7.0

Set custom HTTP response headers to be sent in astro dev and astro preview.

devToolbar.enabled

Type: boolean
Default: true

Whether to enable the Astro Dev Toolbar. This toolbar allows you to inspect your page islands, see helpful audits on performance and accessibility, and more.

This option is scoped to the entire project, to only disable the toolbar for yourself, run npm run astro preferences disable devToolbar. To disable the toolbar for all your Astro projects, run npm run astro preferences disable devToolbar --global.

Prefetch Options

Type: boolean | object

Enable prefetching for links on your site to provide faster page transitions. (Enabled by default on pages using the <ClientRouter /> router. Set prefetch: false to opt out of this behaviour.)

This configuration automatically adds a prefetch script to every page in the project giving you access to the data-astro-prefetch attribute. Add this attribute to any <a /> link on your page to enable prefetching for that page.

<a href="/about" data-astro-prefetch>About</a>

Further customize the default prefetching behavior using the prefetch.defaultStrategy and prefetch.prefetchAll options.

See the Prefetch guide for more information.

prefetch.prefetchAll

Type: boolean

Enable prefetching for all links, including those without the data-astro-prefetch attribute. This value defaults to true when using the <ClientRouter /> router. Otherwise, the default value is false.

prefetch: {
  prefetchAll: true
}

When set to true, you can disable prefetching individually by setting data-astro-prefetch="false" on any individual links.

<a href="/about" data-astro-prefetch="false">About</a>

prefetch.defaultStrategy

Type: 'tap' | 'hover' | 'viewport' | 'load'
Default: 'hover'

The default prefetch strategy to use when the data-astro-prefetch attribute is set on a link with no value.

'tap': Prefetch just before you click on the link.
'hover': Prefetch when you hover over or focus on the link. (default)
'viewport': Prefetch as the links enter the viewport.
'load': Prefetch all links on the page after the page is loaded.

You can override this default value and select a different strategy for any individual link by setting a value on the attribute.

<a href="/about" data-astro-prefetch="viewport">About</a>

Image Options

image.endpoint

Type: Object
Default: {route: '/_image', entrypoint: undefined}

Добавлено в: astro@3.1.0

Set the endpoint to use for image optimization in dev and SSR. The entrypoint property can be set to undefined to use the default image endpoint.

{
  image: {
    // Example: Use a custom image endpoint at `/custom_endpoint`
    endpoint: {
       route: '/custom_endpoint',
       entrypoint: 'src/my_endpoint.ts',
    },
  },
}

image.service

Type: Object
Default: {entrypoint: 'astro/assets/services/sharp', config?: {}}

Добавлено в: astro@2.1.0

Set which image service is used for Astro’s assets support.

The value should be an object with an entrypoint for the image service to use and optionally, a config object to pass to the service.

The service entrypoint can be either one of the included services, or a third-party package.

{
  image: {
    // Example: Enable the Sharp-based image service with a custom config
    service: {
       entrypoint: 'astro/assets/services/sharp',
       config: {
         limitInputPixels: false,
      },
     },
  },
}

image.service.config.limitInputPixels

Type: number | boolean
Default: true

Добавлено в: astro@4.1.0

Whether or not to limit the size of images that the Sharp image service will process.

Set false to bypass the default image size limit for the Sharp image service and process large images.

image.domains

Type: Array.<string>
Default: {domains: []}

Добавлено в: astro@2.10.10

Defines a list of permitted image source domains for remote image optimization. No other remote images will be optimized by Astro.

This option requires an array of individual domain names as strings. Wildcards are not permitted. Instead, use image.remotePatterns to define a list of allowed source URL patterns.

{
  image: {
    // Example: Allow remote image optimization from a single domain
    domains: ['astro.build'],
  },
}

image.remotePatterns

Type: Array.<RemotePattern>
Default: {remotePatterns: []}

Добавлено в: astro@2.10.10

Defines a list of permitted image source URL patterns for remote image optimization.

remotePatterns can be configured with four properties:

protocol
hostname
port
pathname

{
  image: {
    // Example: allow processing all images from your aws s3 bucket
    remotePatterns: [{
      protocol: 'https',
      hostname: '**.amazonaws.com',
    }],
  },
}

You can use wildcards to define the permitted hostname and pathname values as described below. Otherwise, only the exact values provided will be configured: hostname:

Start with ’**.’ to allow all subdomains (‘endsWith’).
Start with ’*.’ to allow only one level of subdomain.

pathname:

End with ’/**’ to allow all sub-routes (‘startsWith’).
End with ’/*’ to allow only one level of sub-route.

image.experimentalLayout

Type: ImageLayout
Default: undefined

The default layout type for responsive images. Can be overridden by the layout prop on the image component. Requires the experimental.responsiveImages flag to be enabled.

responsive - The image will scale to fit the container, maintaining its aspect ratio, but will not exceed the specified dimensions.
fixed - The image will maintain its original dimensions.
full-width - The image will scale to fit the container, maintaining its aspect ratio.

image.experimentalObjectFit

Type: ImageFit
Default: "cover"

The default object-fit value for responsive images. Can be overridden by the fit prop on the image component. Requires the experimental.responsiveImages flag to be enabled.

image.experimentalObjectPosition

Type: string
Default: "center"

The default object-position value for responsive images. Can be overridden by the position prop on the image component. Requires the experimental.responsiveImages flag to be enabled.

image.experimentalBreakpoints

Type: Array.<number>
Default: [640, 750, 828, 1080, 1280, 1668, 2048, 2560] | [640, 750, 828, 960, 1080, 1280, 1668, 1920, 2048, 2560, 3200, 3840, 4480, 5120, 6016]

The breakpoints used to generate responsive images. Requires the experimental.responsiveImages flag to be enabled. The full list is not normally used, but is filtered according to the source and output size. The defaults used depend on whether a local or remote image service is used. For remote services the more comprehensive list is used, because only the required sizes are generated. For local services, the list is shorter to reduce the number of images generated.

Markdown Options

markdown.shikiConfig

Type: Partial<ShikiConfig>

Shiki is our default syntax highlighter. You can configure all options via the markdown.shikiConfig object:

import { defineConfig } from 'astro/config';

export default defineConfig({
  markdown: {
    shikiConfig: {
      // Choose from Shiki's built-in themes (or add your own)
      // https://shiki.style/themes
      theme: 'dracula',
      // Alternatively, provide multiple themes
      // See note below for using dual light/dark themes
      themes: {
        light: 'github-light',
        dark: 'github-dark',
      },
      // Disable the default colors
      // https://shiki.style/guide/dual-themes#without-default-color
      // (Added in v4.12.0)
      defaultColor: false,
      // Add custom languages
      // Note: Shiki has countless langs built-in, including .astro!
      // https://shiki.style/languages
      langs: [],
      // Add custom aliases for languages
      // Map an alias to a Shiki language ID: https://shiki.style/languages#bundled-languages
      // https://shiki.style/guide/load-lang#custom-language-aliases
      langAlias: {
        cjs: "javascript"
      },
      // Enable word wrap to prevent horizontal scrolling
      wrap: true,
      // Add custom transformers: https://shiki.style/guide/transformers
      // Find common transformers: https://shiki.style/packages/transformers
      transformers: [],
    },
  },
});

See the code syntax highlighting guide for usage and examples.

markdown.syntaxHighlight

Type: 'shiki' | 'prism' | false
Default: shiki

Which syntax highlighter to use for Markdown code blocks (```), if any. This determines the CSS classes that Astro will apply to your Markdown code blocks.

shiki - use the Shiki highlighter (github-dark theme configured by default)
prism - use the Prism highlighter and provide your own Prism stylesheet
false - do not apply syntax highlighting.

{
  markdown: {
    // Example: Switch to use prism for syntax highlighting in Markdown
    syntaxHighlight: 'prism',
  }
}

markdown.remarkPlugins

Type: RemarkPlugins

Pass remark plugins to customize how your Markdown is built. You can import and apply the plugin function (recommended), or pass the plugin name as a string.

import remarkToc from 'remark-toc';
{
  markdown: {
    remarkPlugins: [ [remarkToc, { heading: "contents"} ] ]
  }
}

markdown.rehypePlugins

Type: RehypePlugins

Pass rehype plugins to customize how your Markdown’s output HTML is processed. You can import and apply the plugin function (recommended), or pass the plugin name as a string.

import { rehypeAccessibleEmojis } from 'rehype-accessible-emojis';
{
  markdown: {
    rehypePlugins: [rehypeAccessibleEmojis]
  }
}

markdown.gfm

Type: boolean
Default: true

Добавлено в: astro@2.0.0

Astro uses GitHub-flavored Markdown by default. To disable this, set the gfm flag to false:

{
  markdown: {
    gfm: false,
  }
}

markdown.smartypants

Type: boolean
Default: true

Добавлено в: astro@2.0.0

Astro uses the SmartyPants formatter by default. To disable this, set the smartypants flag to false:

{
  markdown: {
    smartypants: false,
  }
}

markdown.remarkRehype

Type: RemarkRehype

Pass options to remark-rehype.

{
  markdown: {
    // Example: Translate the footnotes text to another language, here are the default English values
    remarkRehype: { footnoteLabel: "Footnotes", footnoteBackLabel: "Back to reference 1"},
  },
};

i18n

Type: object

Добавлено в: astro@3.5.0

Configures i18n routing and allows you to specify some customization options.

See our guide for more information on internationalization in Astro

i18n.locales

Type: Locales

Добавлено в: astro@3.5.0

A list of all locales supported by the website. This is a required field.

Languages can be listed either as individual codes (e.g. ['en', 'es', 'pt-br']) or mapped to a shared path of codes (e.g. { path: "english", codes: ["en", "en-US"]}). These codes will be used to determine the URL structure of your deployed site.

No particular language code format or syntax is enforced, but your project folders containing your content files must match exactly the locales items in the list. In the case of multiple codes pointing to a custom URL path prefix, store your content files in a folder with the same name as the path configured.

i18n.defaultLocale

Type: string

Добавлено в: astro@3.5.0

The default locale of your website/application, that is one of the specified locales. This is a required field.

No particular language format or syntax is enforced, but we suggest using lower-case and hyphens as needed (e.g. “es”, “pt-br”) for greatest compatibility.

i18n.fallback

Type: Record.<string, string>

Добавлено в: astro@3.5.0

The fallback strategy when navigating to pages that do not exist (e.g. a translated page has not been created).

Use this object to declare a fallback locale route for each language you support. If no fallback is specified, then unavailable pages will return a 404.

Example

The following example configures your content fallback strategy to redirect unavailable pages in /pt-br/ to their es version, and unavailable pages in /fr/ to their en version. Unavailable /es/ pages will return a 404.

export default defineConfig({
  i18n: {
    defaultLocale: "en",
    locales: ["en", "fr", "pt-br", "es"],
    fallback: {
      pt: "es",
      fr: "en"
    }
  }
})

i18n.routing

Type: Routing

Добавлено в: astro@3.7.0

Controls the routing strategy to determine your site URLs. Set this based on your folder/URL path configuration for your default language.

i18n.routing.prefixDefaultLocale

Type: boolean
Default: false

Добавлено в: astro@3.7.0

When false, only non-default languages will display a language prefix. The defaultLocale will not show a language prefix and content files do not exist in a localized folder. URLs will be of the form example.com/[locale]/content/ for all non-default languages, but example.com/content/ for the default locale.

When true, all URLs will display a language prefix. URLs will be of the form example.com/[locale]/content/ for every route, including the default language. Localized folders are used for every language, including the default.

export default defineConfig({
  i18n: {
    defaultLocale: "en",
    locales: ["en", "fr", "pt-br", "es"],
    routing: {
      prefixDefaultLocale: true,
    }
  }
})

i18n.routing.redirectToDefaultLocale

Type: boolean
Default: true

Добавлено в: astro@4.2.0

Configures whether or not the home URL (/) generated by src/pages/index.astro will redirect to /[defaultLocale] when prefixDefaultLocale: true is set.

Set redirectToDefaultLocale: false to disable this automatic redirection at the root of your site:

export default defineConfig({
  i18n:{
    defaultLocale: "en",
    locales: ["en", "fr"],
    routing: {
      prefixDefaultLocale: true,
      redirectToDefaultLocale: false
    }
  }
})

i18n.routing.fallbackType

Type: "redirect" | "rewrite"
Default: "redirect"

Добавлено в: astro@4.15.0

When i18n.fallback is configured to avoid showing a 404 page for missing page routes, this option controls whether to redirect to the fallback page, or to rewrite the fallback page’s content in place.

By default, Astro’s i18n routing creates pages that redirect your visitors to a new destination based on your fallback configuration. The browser will refresh and show the destination address in the URL bar.

When i18n.routing.fallback: "rewrite" is configured, Astro will create pages that render the contents of the fallback page on the original, requested URL.

With the following configuration, if you have the file src/pages/en/about.astro but not src/pages/fr/about.astro, the astro build command will generate dist/fr/about.html with the same content as the dist/en/about.html page. Your site visitor will see the English version of the page at https://example.com/fr/about/ and will not be redirected.

export default defineConfig({
   i18n: {
    defaultLocale: "en",
    locales: ["en", "fr"],
    routing: {
      prefixDefaultLocale: false,
      fallbackType: "rewrite",
    },
    fallback: {
      fr: "en",
    }
  },
})

i18n.routing.manual

Type: string

Добавлено в: astro@4.6.0

When this option is enabled, Astro will disable its i18n middleware so that you can implement your own custom logic. No other routing options (e.g. prefixDefaultLocale) may be configured with routing: "manual".

You will be responsible for writing your own routing logic, or executing Astro’s i18n middleware manually alongside your own.

export default defineConfig({
  i18n: {
    defaultLocale: "en",
    locales: ["en", "fr", "pt-br", "es"],
    routing: {
      prefixDefaultLocale: true,
    }
  }
})

env

Type: object
Default: {}

Добавлено в: astro@5.0.0

Configuration options for type-safe environment variables.

See our guide for more information on environment variables in Astro.

env.schema

Type: EnvSchema
Default: {}

Добавлено в: astro@5.0.0

An object that uses envField to define the data type and properties of your environment variables: context (client or server), access (public or secret), a default value to use, and whether or not this environment variable is optional (defaults to false).

import { defineConfig, envField } from "astro/config"

export default defineConfig({
  env: {
    schema: {
      API_URL: envField.string({ context: "client", access: "public", optional: true }),
      PORT: envField.number({ context: "server", access: "public", default: 4321 }),
      API_SECRET: envField.string({ context: "server", access: "secret" }),
    }
  }
})

envField supports four data types: string, number, enum, and boolean. context and access are required properties for all data types. The following shows the complete list of properties available for each data type:

import { envField } from "astro/config"

envField.string({
   // context & access
   optional: true,
   default: "foo",
   max: 20,
   min: 1,
   length: 13,
   url: true,
   includes: "oo",
   startsWith: "f",
   endsWith: "o",
})
envField.number({
   // context & access
   optional: true,
   default: 15,
   gt: 2,
   min: 1,
   lt: 3,
   max: 4,
   int: true,
})
envField.boolean({
   // context & access
   optional: true,
   default: true,
})
envField.enum({
   // context & access
   values: ['foo', 'bar', 'baz'], // required
   optional: true,
   default: 'baz',
})

env.validateSecrets

Type: boolean
Default: false

Добавлено в: astro@5.0.0

Whether or not to validate secrets on the server when starting the dev server or running a build.

By default, only public variables are validated on the server when starting the dev server or a build, and private variables are validated at runtime only. If enabled, private variables will also be checked on start. This is useful in some continuous integration (CI) pipelines to make sure all your secrets are correctly set before deploying.

import { defineConfig, envField } from "astro/config"

export default defineConfig({
  env: {
    schema: {
      // ...
    },
    validateSecrets: true
  }
})

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Сообщество

Configuration Reference

Top-Level Options

site

base

trailingSlash

redirects

output

adapter

integrations

root

Examples

srcDir

publicDir

outDir

cacheDir

compressHTML

scopedStyleStrategy

security

security.checkOrigin

vite

Examples

Build Options

build.format

Effect on Astro.url

build.client

build.server

build.assets

build.assetsPrefix

build.serverEntry

build.redirects

build.inlineStylesheets

build.concurrency

Server Options

server.host

server.port

server.open

server.headers

Dev Toolbar Options

devToolbar.enabled

Prefetch Options

prefetch.prefetchAll

prefetch.defaultStrategy

Image Options

image.endpoint

image.service

image.service.config.limitInputPixels

image.domains

image.remotePatterns

image.experimentalLayout

image.experimentalObjectFit

image.experimentalObjectPosition

image.experimentalBreakpoints

Markdown Options

markdown.shikiConfig

markdown.syntaxHighlight

markdown.remarkPlugins

markdown.rehypePlugins

markdown.gfm

markdown.smartypants

markdown.remarkRehype

i18n

i18n.locales

i18n.defaultLocale

i18n.fallback

Example

i18n.routing

i18n.routing.prefixDefaultLocale

i18n.routing.redirectToDefaultLocale

i18n.routing.fallbackType

i18n.routing.manual

env

env.schema

env.validateSecrets