type-crafter
v0.8.2
Published
A tool to generate types from a yaml schema for any language
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Type Crafter
TypeCrafter is a CLI tool for generating types from a YAML types specification for any language. The tool is heavily inspired by OpenAPI Generator and aims to provide similar functionality for generating types with a simple YAML specification & more flexibility.
Installation
npm i -g type-crafter
Usage
type-crafter generate <language> <types-specification-file> <output-directory>
Example
type-crafter generate typescript types.yaml ./types
Example input specification file can be found here
Input Specification
The input specification is a YAML file that contains the types specification. Refer the following sample specification for the structure:
info:
version: 0.0.0
title: Title of your specification
types:
SampleType:
type: object
properties:
name:
type: string
groupedTypes:
SampleGroupedType:
type: object
properties:
name:
type: string
The input specification yaml file must be of following syntax:
info
- The information about the specification. Specifying the version and title of your spec. This is required.types
- These are types that will be generated in flat structure.groupedTypes
- These are types that will be generated and grouped in a folder.
Note: Passing types or groupedTypes is up to your expected results. A valid spec file can contain either types or groupedTypes or both.
The syntax for writing different types can be referred from the OpenAPI Data Types Guide.
Supported languages
- [✔️] TypeScript
- More languages will be added soon.
Contributing & Extending
Adding support for a new language
TypeCrafter uses Handlebars to template syntax for different languages.
To add support for a new language, you need to create a new folder in src/templates
directory.
The folder name will be the name of the language.
The folder must implement following files:
index.ts
- The main file that will be exporting the generator config.object-syntax.hbs
- This Handlebars template file that will be used to generate the object syntax.type-file-syntax.hbs
- This Handlebars template file that will be used to generate the syntax for file which contains the generated types & its imports.exporter-module-syntax.hbs
- This Handlebars template file that will be used to generate the syntax for the module that exports the generated types.
Development
To start developing type-crafter, you need to run following commands:
pnpm i
pnpm run dev