TS contentful content types generator

A CLI to generate Typescript definitions based on JSON export generated with contentful CLI.

Table of Contents

• Installation
• Usage
  • Example
    • Local
    • Remote
  • Input
  • Output
• Renderer
  • Default Renderer
  • Localized Renderer
  • JSDoc Renderer
  • Type Guard Renderer
  • Response Type Renderer
• Direct Usage
• Browser Usage

Installation

npm install cf-content-types-generator

Usage

Contentful Content Types (TS Definitions) Generator

USAGE
  $ cf-content-types-generator [FILE]

ARGUMENTS
  FILE  local export (.json)

OPTIONS
  -e, --environment=environment  environment
  -h, --help                     show CLI help
  -o, --out=out                  output directory
  -p, --preserve                 preserve output folder
  -X  --v10                      create contentful.js v10 types
  -r, --response                 add response types (only for v10 types)
  -l, --localized                add localized types
  -d, --jsdoc                    add JSDoc comments
  -g, --typeguard                add type guards
  -s, --spaceId=spaceId          space id
  -t, --token=token              management token
  -v, --version                  show CLI version
  -a, --host                     The Management API host

Example

Local

Use a local JSON file to load contentTypes. Flags for spaceId, token and environement will be ignored.

Will print result to console

cf-content-types-generator path/to/exported/file.json

in a real world scenario, you would pipe the result to a file.

Will store resulting files in target directory

cf-content-types-generator path/to/exported/file.json -o path/to/target/out/directory

existing directory content will be removed.

Remote

If no file arg provided, remote mode is enabled. spaceId and token flags need to be set.

cf-content-types-generator -s 2l3j7k267xxx  -t CFPAT-64FtZEIOruksuaE_Td0qBvHdELNWBCC0fZUWq1NFxxx

Input

As input a json file with a contentTypes field is expected:

{
  "contentTypes": [
    {
      "sys": {
        "id": "artist",
        "type": "ContentType"
      },
      "displayField": "name",
      "name": "Artist",
      "fields": [
        {
          "id": "name",
          "name": "Name",
          "type": "Symbol",
          "required": true,
          "validations": [
            {
              "unique": true
            }
          ]
        },
        {
          "id": "profilePicture",
          "name": "Profile Picture",
          "type": "Link",
          "required": false,
          "validations": [
            {
              "linkMimetypeGroup": ["image"]
            }
          ],
          "linkType": "Asset"
        },
        {
          "id": "bio",
          "name": "Bio",
          "type": "RichText",
          "required": false,
          "validations": [
            {
              "nodes": {}
            },
            {
              "enabledMarks": [],
              "message": "Marks are not allowed"
            },
            {
              "enabledNodeTypes": [],
              "message": "Nodes are not allowed"
            }
          ]
        }
      ]
    },
    {
      "sys": {
        "id": "artwork",
        "type": "ContentType"
      },
      "displayField": "name",
      "name": "Artwork",
      "fields": [
        {
          "id": "name",
          "name": "Name",
          "type": "Symbol",
          "required": true,
          "validations": []
        },
        {
          "id": "type",
          "name": "Type",
          "type": "Symbol",
          "required": false,
          "validations": [
            {
              "in": ["print", "drawing", "painting"],
              "message": "Hello - this is a custom error message."
            }
          ]
        },
        {
          "id": "preview",
          "name": "Preview",
          "type": "Array",
          "required": false,
          "validations": [],
          "items": {
            "type": "Link",
            "validations": [
              {
                "linkMimetypeGroup": ["image", "audio", "video"]
              }
            ],
            "linkType": "Asset"
          }
        },
        {
          "id": "artist",
          "name": "Artist",
          "type": "Link",
          "required": true,
          "validations": [
            {
              "linkContentType": ["artist"]
            }
          ],
          "linkType": "Entry"
        }
      ]
    }
  ]
}

This example shows a subset of the actual payload provided by contentful's cli export command.

Output

import * as CFRichTextTypes from '@contentful/rich-text-types';
import { Entry, EntryFields } from 'contentful';

export interface TypeArtistFields {
  name: Contentful.EntryFields.Symbol;
  profilePicture?: Contentful.Asset;
  bio?: EntryFields.RichText;
}

export type TypeArtist = Entry<TypeArtistFields>;

export interface TypeArtworkFields {
  name: EntryFields.Symbol;
  type?: 'print' | 'drawing' | 'painting';
  preview?: Asset[];
  artist: Entry<TypeArtistFields>;
}

export type TypeArtwork = Entry<TypeArtworkFields>;

This all only works if you add the contentful package to your target project to get all relevant type definitions.

Renderer

Extend the default BaseContentTypeRenderer class, or implement the ContentTypeRenderer interface for custom rendering.

Relevant methods to override:

Methods	Description	Override
render	Enriches a SourceFile with all relevant nodes	To control content type rendering (you should know what you're doing)
getContext	Returns new render context object	To define custom type renderer and custom module name function
addDefaultImports	Define set of default imports added to every file	To control default imported modules
renderField	Returns a PropertySignatureStructure representing a field property	To control Field property rendering
renderFieldType	Returns a string representing a field type	To control field type rendering (recommended)
renderEntry	Returns a TypeAliasDeclarationStructure representing an entry type alias	To control entry type alias rendering
renderEntryType	Returns a string representing an entry type	To control entry type rendering (recommended)

Table represents order of execution

Set content type renderers:

import {
  CFDefinitionsBuilder,
  DefaultContentTypeRenderer,
  LocalizedContentTypeRenderer,
} from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([
  new DefaultContentTypeRenderer(),
  new LocalizedContentTypeRenderer(),
]);

DefaultContentTypeRenderer

A renderer to render type fields and entry definitions. For most scenarios, this renderer is sufficient. If no custom renderers given, CFDefinitionsBuilder creates a DefaultContentTypeRenderer by default.

Example Usage

import { CFDefinitionsBuilder, DefaultContentTypeRenderer } from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([new DefaultContentTypeRenderer()]);

V10ContentTypeRenderer

A renderer to render type fields and entry definitions compatible with contentful.js v10.

import { CFDefinitionsBuilder, V10ContentTypeRenderer } from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([new V10ContentTypeRenderer()]);

LocalizedContentTypeRenderer

Add additional types for localized fields. It adds utility types to transform fields into localized fields for given locales More details on the utility types can be found here: Issue 121 Note that these types are not needed when using V10ContentTypeRenderer as the v10 entry type already supports localization.

Example Usage

import {
  CFDefinitionsBuilder,
  DefaultContentTypeRenderer,
  LocalizedContentTypeRenderer,
} from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([
  new DefaultContentTypeRenderer(),
  new LocalizedContentTypeRenderer(),
]);

Example output

export interface TypeCategoryFields {
  title: Contentful.EntryFields.Text;
  icon?: Contentful.Asset;
  categoryDescription?: Contentful.EntryFields.Text;
}

export type TypeCategory = Contentful.Entry<TypeCategoryFields>;

export type LocalizedTypeCategoryFields<Locales extends keyof any> = LocalizedFields<
  TypeCategoryFields,
  Locales
>;

export type LocalizedTypeCategory<Locales extends keyof any> = LocalizedEntry<
  TypeCategory,
  Locales
>;

Example output usage

const localizedCategory: LocalizedTypeCategory<'DE-de' | 'En-en'> = {
  fields: {
    categoryDescription: {
      'DE-de': 'german description',
      'En-en': 'english description',
    },
  },
};

JSDocRenderer

Adds JSDoc Comments to every Entry type and Field type (created by the default renderer, or a renderer that creates the same entry and field type names). This renderer can be customized through renderer options.

JSDocContentTypeRenderer can only render comments for already rendered types. It's essential to add it after the default renderer, or any renderer that creates entry and field types based on the context moduleName resolution.

Example Usage

import { CFDefinitionsBuilder, JsDocRenderer } from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([new DefaultContentTypeRenderer(), new JsDocRenderer()]);

Example output

import * as Contentful from 'contentful';
/**
 * Fields type definition for content type 'TypeAnimal'
 * @name TypeAnimalFields
 * @type {TypeAnimalFields}
 * @memberof TypeAnimal
 */
export interface TypeAnimalFields {
  /**
   * Field type definition for field 'bread' (Bread)
   * @name Bread
   * @localized false
   */
  bread: Contentful.EntryFields.Symbol;
}

/**
 * Entry type definition for content type 'animal' (Animal)
 * @name TypeAnimal
 * @type {TypeAnimal}
 */
export type TypeAnimal = Contentful.Entry<TypeAnimalFields>;

TypeGuardRenderer

Adds type guard functions for every content type

Example Usage

import {
  CFDefinitionsBuilder,
  DefaultContentTypeRenderer,
  TypeGuardRenderer,
} from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([
  new DefaultContentTypeRenderer(),
  new TypeGuardRenderer(),
]);

Example output

import { Entry, EntryFields } from 'contentful';
import type { WithContentTypeLink } from 'TypeGuardTypes';

export interface TypeAnimalFields {
  bread: EntryFields.Symbol;
}

export type TypeAnimal = Entry<TypeAnimalFields>;

export function isTypeAnimal(entry: WithContentTypeLink): entry is TypeAnimal {
  return entry.sys.contentType.sys.id === 'animal';
}

V10TypeGuardRenderer

Adds type guard functions for every content type which are compatible with contentful.js v10.

Example Usage

import {
  CFDefinitionsBuilder,
  V10ContentTypeRenderer,
  V10TypeGuardRenderer,
} from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([
  new V10ContentTypeRenderer(),
  new V10TypeGuardRenderer(),
]);

Example output

import type {
  ChainModifiers,
  Entry,
  EntryFieldTypes,
  EntrySkeletonType,
  LocaleCode,
} from 'contentful';

export interface TypeAnimalFields {
  bread?: EntryFieldTypes.Symbol;
}

export type TypeAnimalSkeleton = EntrySkeletonType<TypeAnimalFields, 'animal'>;
export type TypeAnimal<Modifiers extends ChainModifiers, Locales extends LocaleCode> = Entry<
  TypeAnimalSkeleton,
  Modifiers,
  Locales
>;

export function isTypeAnimal<Modifiers extends ChainModifiers, Locales extends LocaleCode>(
  entry: Entry<EntrySkeletonType, Modifiers, Locales>,
): entry is TypeAnimal<Modifiers, Locales> {
  return entry.sys.contentType.sys.id === 'animal';
}

ResponseTypeRenderer

Adds response types for every content type which are compatible with contentful.js v10.

Example Usage

import {
  CFDefinitionsBuilder,
  V10ContentTypeRenderer,
  ResponseTypeRenderer,
} from 'cf-content-types-generator';

const builder = new CFDefinitionsBuilder([
  new V10ContentTypeRenderer(),
  new ResponseTypeRenderer(),
]);

Example output

import type {
  ChainModifiers,
  Entry,
  EntryFieldTypes,
  EntrySkeletonType,
  LocaleCode,
} from 'contentful';

export interface TypeAnimalFields {
  bread?: EntryFieldTypes.Symbol;
}

export type TypeAnimalSkeleton = EntrySkeletonType<TypeAnimalFields, 'animal'>;
export type TypeAnimal<Modifiers extends ChainModifiers, Locales extends LocaleCode> = Entry<
  TypeAnimalSkeleton,
  Modifiers,
  Locales
>;

export type TypeAnimalWithoutLinkResolutionResponse = TypeAnimal<'WITHOUT_LINK_RESOLUTION'>;
export type TypeAnimalWithoutUnresolvableLinksResponse = TypeAnimal<'WITHOUT_UNRESOLVABLE_LINKS'>;
export type TypeAnimalWithAllLocalesResponse<Locales extends LocaleCode = LocaleCode> =
  TypeAnimal<'WITH_ALL_LOCALES'>;
export type TypeAnimalWithAllLocalesAndWithoutLinkResolutionResponse<
  Locales extends LocaleCode = LocaleCode,
> = TypeAnimal<'WITH_ALL_LOCALES' | 'WITHOUT_LINK_RESOLUTION', Locales>;
export type TypeAnimalWithAllLocalesAndWithoutUnresolvableLinksResponse<
  Locales extends LocaleCode = LocaleCode,
> = TypeAnimal<'WITH_ALL_LOCALES' | 'WITHOUT_UNRESOLVABLE_LINKS', Locales>;

Direct Usage

If you're not a CLI person, or you want to integrate it with your tooling workflow, you can also directly use the CFDefinitionsBuilder from cf-definitions-builder.ts

import CFDefinitionsBuilder from 'cf-content-types-generator';

const stringContent = new CFDefinitionsBuilder()
  .appendType({
    name: 'My Entry',
    sys: {
      id: 'myEntry',
      type: 'ContentType',
    },
    fields: [
      {
        id: 'myField',
        name: 'My Field',
        type: 'Symbol',
        required: true,
        validations: [],
        disabled: false,
        localized: false,
        omitted: false,
      },
    ],
  })
  .toString();

console.log(stringContent);

// import { Entry, EntryFields } from "contentful";

//
// export interface TypeMyEntryFields {
//   myField: EntryFields.Symbol;
// }
//
// export type TypeMyEntry = Entry<TypeMyEntryFields>;

Browser Usage

You can use CFDefinitionsBuilder also in a browser environment.

Example: TS Content Types Generator App