Astro Decap Collection

Derive Astro content collection schemata from Decap collection configs.

The procedure is to transform a Decap config into a Zod schema by mapping the Decap widget fields with custom transformers.

A demo application using the transforms to convert in the browser can be found here.

Installation

npm i -D astro-decap-collection
# or
pnpm add -D astro-decap-collection
# or
yarn add -D astro-decap-collection

Usage

Transform the Decap config at build time and use the generated Zod schema. This allows Astro to validate the given data and provides types as well.

Option	Description
--config, -c	Path to the Decap YML config file, can be a glob pattern
--target, -t	Path to the Astro content directory to write to
--naming, -n	Naming pattern of the created file with placeholders
--watch, -w	Watch the config file for changes

The name of the target file will be config.<collection>.ts by default, using the collection name from the Decap config.
This can be configured with the --naming option placeholders.

Config paths can be provided as positionals, thus the --config flag is optional.

# astro-decap-collection, adc - Binary name
# --config, -c - Decap YML config file path to read from
# --target, -t - Astro content directory path to write to
# --watch,  -w - Use watch mode

# full command:
astro-decap-collection --config ./public/admin/config.yml --target ./src/content --watch
# or with shorthands and positionals:
adc -t ./src/content -w ./public/admin/config.yml
# or with glob pattern:
adc -t ./src/content -w ./public/collections/*.yml

The cli command should be run at least before every astro build.

Then, the generated schema can be used in the Astro collection config.

import { defineCollection } from 'astro:content';
import { prepareSchema } from 'astro-decap-collection';

// grab generated schema
import { schema } from './config.blog.ts';

// define the collection
// https://docs.astro.build/en/guides/content-collections/#defining-collections
export const collections = {
  blog: defineCollection(prepareSchema(schema)),
  // ... or without the convenience wrapper
  blog: defineCollection({ type: 'content', schema }),
};

Placeholders

The --naming option can be used to define a naming pattern for the generated file.
For the time being, the following placeholders are supported:

• %%name%% - The name of the collection from the Decap config

Local development

Run a local tsx compiler in watch mode

npx -y tsx watch src/cli.ts -c public/examples/blog.yml -t tmp -w