panrafal / storyblok-generate-ts

Generates TypeScript interface types based on Storyblok component file

storyblok-generate-ts

This plugin uses json-schema-to-typescript to generate TS types based on Storyblok components. You can install and run it as a CLI script

1. Prepare the use of this script

a) Fetch your schema with Storyblok CLI

# Make sure storyblok is installed (npm i storyblok -g)
$ storyblok pull-components --space=[SPACE_ID]

Example:

$ storyblok pull-components --space=123456

b) Install this library as devDependency

$ npm install -D storyblok-generate-ts

c) Create node script inside of your package.json scripts

"generate-sb-types": "storyblok-generate-ts source=./components.[SPACE_ID].json target=./component-types-sb"

Example:

"generate-sb-types": "storyblok-generate-ts source=./components.123456.json target=./component-types-sb"

You can also provide multiple files as source in case you used the --separate-files flag with the pull-components command:

"generate-sb-types": "storyblok-generate-ts source=string hero-[SPACE_ID].json,footer-[SPACE_ID].json target=./component-types-sb"

Example:

"generate-sb-types": "storyblok-generate-ts source=string hero-123456.json,footer-123456.json target=./component-types-sb"

Properties of CLI

- source *required - path of the components.[SPACE_ID].json or multiple files as comma-separated string hero-[SPACE_ID].json,footer-[SPACE_ID].json
- target *optional default: storyblok-component-types.d.ts
- titlePrefix *optional default: '_storyblok' 
- titleSuffix *optional
- compilerOptions.[property] *optional
- customTypeParser *optional - path to a custom parser NodeJS file

Compiler options:

property	type	default	description
unknownAny	boolean	false	Type any will be replaced with unknown where possible if true
bannerComment	string	''	Disclaimer comment prepended to the top of each generated file
unreachableDefinitions	boolean	true	Generates code for $defs that aren't referenced by the schema.
additionalProperties	boolean	true	Adding [k: string]: any ([k: string]: unknown if unknownAny:true) to all object types (to nested ones too) when set to true
enableConstEnums	boolean	true	Prepend enums with const?
format	boolean	true	Format code? Set this to false to improve performance.
ignoreMinAndMaxItems	boolean	false	Ignore maxItems and minItems for array types, preventing tuples being generated.
maxItems	number	20	Maximum number of unioned tuples to emit when representing bounded-size array types, before falling back to emitting unbounded arrays. Increase this to improve precision of emitted types, decrease it to improve performance, or set it to -1 to ignore maxItems.
strictIndexSignatures	boolean	false	Append all index signatures with | undefined so that they are strictly typed.
style	object	{ bracketSpacing: false, printWidth: 120, semi: true, singleQuote: false, tabWidth: 2, trailingComma: 'none', useTabs: false }	A Prettier configuration
cwd	string	process.cwd()	Root directory for resolving $refs
declareExternallyReferenced	boolean	true	Declare external schemas referenced via $ref?
$refOptions	object	{}	$RefParser Options, used when resolving $refs

Alternative to CLI script: create a NodeJS javascript file

Example:

const storyblokToTypescript = require('src/index')

storyblokToTypescript({
    // required
    componentsJson: require('./components.xxxxxx.json'), // pull components with storyblok
    // required
    path: __dirname + '/src/typings/generated/components-schema.ts', // make sure path exists
    // optional type prefix (default: none)
    titlePrefix: '',
    // optional type name suffix (default: [Name]_Storyblok)
    titleSuffix: '_storyblok',
    // optional compilerOptions which get passed through to json-schema-to-typescript
    compilerOptions: {
        unknownAny: false,
        bannerComment: '',
        unreachableDefinitions: true
    }
    // optional function for custom types (key, obj) => {}
    // customTypeParser: exampleCustomParser
})

3. Run your script

$ node ./YOUR_SCRIPT_NAME.js

Example Custom Parser

function exampleCustomParser (key, obj) {
  switch (obj.field_type) {
    case 'bootstrap-utility-class-selector':
      return {
        [key]: {
          type: 'object',
          properties: {
            values: {
              type: 'array',
              items: {
                type: 'string'
              }
            }
          }
        }
      }
    case 'vue-color-picker':
      return {
        [key]: {
          type: 'object',
          properties: {
            rgba: {
              type: 'string'
            }
          }
        }
      }
    default:
      return {}
  }
}

Inspect your generated file

You can inspect all interfaces in the generated output of your file. From now on all your components blocks will be type safe (even if you use the custom blocks of Storyblok).

Generic Types

Following types are available for convenient reasons (if they are used in your component schema):

AssetStoryblok
MultiassetStoryblok
MultilinkStoryblok
TableStoryblok

Resolve relations

If you use resolve_relations you can simply extend your required schema to support fully typed relations.

Example: resolve_relations: "page.author,page.categories,page.tags"

type PageWithRelations = PageStoryblok & {
  author?: StoryData<AuthorStoryblok>
  categories?: StoryData<CategoryStoryblok>[]
  tags?: StoryData<TagStoryblok>[]
}

CHANGELOG

• 1.0.0 initial version
• 1.0.1 Added support for datetime and improved multilink
• 1.1.0 CLI support, for use check 1 c)
• 1.1.1 README update
• 1.2.0 Add types for multiasset
• 1.2.1 Improve type for asset and multiasset
• 1.3.0 Default custom map. Support seo-metatags
• 1.4.0 Allow empty string in options type (thanks to @jbeast)
• 1.5.0 De-Duplicate asset, multiasset and multilink (thanks to @markus-gx)
• 1.6.0 Add table schema (thanks to @markus-gx)
• 1.6.1 Add asset focus type (thanks to @markus-gx)
• 1.7.0 Add compilerOptions option (thanks to @SassNinja)
• 1.8.0 Use never[] on groups that have no members (thanks to @arduano)
• 1.9.0 Convert all files to TypeScript and add TypeScript declaration
• 1.10.0 Resolve typings of internal stories (thanks to @schaschjan)
• 1.10.2 Minor type adjustment for internal stories
• 1.11.0 Improve Payload of main script (thanks to @scmx)
• 1.12.0 Fixes an error when filter_content_type is not an array (thanks to @juanpasolano)
• 1.13.0 Merged multilink story fieldtype and single options (credits to @juanpasolano and @markus-gx)
• 1.13.1 Added tests and fix minor typing error (credits to @juanpasolano)
• 1.13.2 Fixed types
• 1.14.0 Enable multi-file support and add RichText typings (thanks to @VictorWinberg & @mattcrn)
• 1.15.0 Change Storyblok number type to "string" as the API does not return a number type (thanks to @davidhoeck)