Astro Default Frontmatter

This is a simple collection of remark plugins for Astro that allows you to define a default frontmatter for you markdown files

Plugins:

• defaultLayout define a default layout for ALL markdown
• defaultFrontmatter define a default frontmatter for ALL markdown
• defaultFrontmatterAdvanced define a default frontmatter based on the files directory in the project

If you want to see how these plugins work you can check out the Stackblitz Demo

defaultLayout

Option/Argument Type: string

Define a default layout for ALL markdown in your project

Example

//astro.config.mjs
import { defineConfig } from 'astro/config';
import { defaultLayout } from 'astro-default-frontmatter';

export default defineConfig({
  markdown: {
    remarkPlugins: [
      [defaultLayout, "~/layouts/DefaultLayout.astro"]
    ]
  }
});

defaultFrontmatter

Option/Argument Type: Record<string, any>

Define a default frontmatter for ALL markdown in your project

Example

//astro.config.mjs
import { defineConfig } from 'astro/config';
import { defaultFrontmatter } from 'astro-default-frontmatter';

export default defineConfig({
  markdown: {
    remarkPlugins: [
      [defaultFrontmatter, {
        layout: "~/layouts/DefaultLayout.astro",
        title: 'Default Title'
      }]
    ]
  }
});

defaultFrontmatterAdvanced

Option/Argument Type:

Array<{
  dirs: string[];
  frontmatter: Record<string, unknown>;
  replace?: boolean;
}>

Define a default frontmatter based on what directory the file is in

Options should be in order from less specific dirs --> more specific dirs to stop frontmatters from overlapping './' -> './src' -> './src/content' -> './src/content/1.md'

dirs

Type: Array<string>

A list of directories that frontmatter will be applied to

frontmatter

Type: Record<string, any>

Frontmatter object that will be applied to all directories in dirs

replace

Type: boolean

Replace the frontmatter entirely instead of spreading new values ontop of old values

Examples

Stackblitz Demo

Or

//astro.config.mjs
import { defineConfig } from 'astro/config';
import { defaultFrontmatterAdvanced } from 'astro-default-frontmatter';

const Options = [
  {
    dirs: ['./'],
    frontmatter: { layout: "~/layouts/DefaultLayout.astro" },
  },
  {
    dirs: ['./src/content'],
    frontmatter: { layout: "~/layouts/DirectoryLayout.astro" },
  },
  {
    dirs: ['./src/content/2.md'],
    frontmatter: { layout: "~/layouts/FileLayout.astro"  }
  },
  {
    dirs: ['./src/content/5.md'],
    frontmatter: {},
    replace: true
  }
]

export default defineConfig({
  markdown: {
    remarkPlugins: [
      [defaultFrontmatterAdvanced, Options]
    ],
  },
});

Output:

1.md -> {
    "layout": "../layouts/FrontmatterLayout.astro",
    "title": "Title From File"
}
2.md -> {
    "layout": "../layouts/FileLayout.astro"
}
3.md -> {
    "layout": "../layouts/DirectoryLayout.astro"
}
4.md -> {
    "layout": "../layouts/DirectoryLayout.astro"
}
5.md -> {}