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https://github.com/horiuchi/dtsgenerator

TypeScript d.ts file generate from JSON Schema file
https://github.com/horiuchi/dtsgenerator

json-schema opneapi swagger typescript

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TypeScript d.ts file generate from JSON Schema file

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# dtsgenerator

TypeScript d.ts file generator from JSON Schema file or OpenAPI(Swagger) spec file.

[![nodejs version](https://img.shields.io/node/v/dtsgenerator.svg)](#)
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[![MIT license](https://img.shields.io/npm/l/dtsgenerator.svg)](#)

## Table of Contents

- [Install](#install)
- [Usage](#usage)
- [Migration from v2](#migration-from-v2)
- [Plug-in](#plug-in)
- [Development](#development)
- [ChangeLog](#changelog)
- [License](#license)

## Install

npm install -g dtsgenerator

- [Releases](https://github.com/horiuchi/dtsgenerator/releases)

## Usage

### CLI

```sh
$ dtsgen --help
Usage: dtsgenerator [options]

Options:
-V, --version output the version number
-c, --config set configuration file path.
--url input json schema from the url. (default: [])
--stdin read stdin with other files or urls.
-o, --out output filename.
-t, --target Specify ECMAScript target version: 'ES3', 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018',
'ES2019', 'ES2020', or 'ESNEXT' (default).
--info for developer mode. output loaded config and plugin details only.
--output-ast output TypeScript AST instead of d.ts file.
-h, --help display help for command

Examples:
$ dtsgen --help
$ dtsgen --out types.d.ts schema/**/*.schema.json
$ cat schema1.json | dtsgen -c dtsgen.json
$ dtsgen -o swaggerSchema.d.ts --url https://raw.githubusercontent.com/OAI/OpenAPI-Specification/master/schemas/v2.0/schema.json
$ dtsgen -o petstore.d.ts --url https://raw.githubusercontent.com/OAI/OpenAPI-Specification/master/examples/v2.0/yaml/petstore.yaml
$ dtsgen -c dtsgen-test.json --info

```

For the configuration file, please refer to the file in the [config_sample](https://github.com/horiuchi/dtsgenerator/tree/master/config_sample/) directory.

### NodeJS API

```js
const { default: dtsgenerator, parseSchema } = require('dtsgenerator');

dtsgenerator({
contents: [parseSchema({/* JsonSchema object */})],
config: {/* Config object */},
}).then(content => {
/* Do someting with parsed content */
}).catch(err => {
/* Handle errors */
});
```

### Use HTTP/HTTPS Proxy

If you need a proxy to fetch the schema, please set the following environment variables.

```bash
export http_proxy=http://proxy.example.com:8080/
export https_proxy=http://proxy.example.com:8080/
# If there are exceptionally hosts that do not go through a proxy
export no_proxy=google.com, yahoo.com
```

## Migration from v2

The dtsgenerator v3 has made the following breaking changes from v2.

- Support Plug-in feature. See the Plug-in section for more information.
- Change the command line options.
- Remove the `--namespace` option. Use the `@dtsgenerator/replace-namespace` plug-in instead.
- Add the `--config` option. Mainly for setting up the Plug-in.
- And add more options.
- TypeScript AST is now used internally to generate type definitions.

## Plug-in

### How to find plug-in

- Search by npm:
- Find by the @dtsgenerator repositories:
- `@dtsgenerator/replace-namespace` : This plug-in is instead the `--namespace` option on old version.
- `@dtsgenerator/decorate-typename` : This plug-in can decorate the output type name.
- `@dtsgenerator/single-quote` : This plug-in replace the quote mark to single.

### How to create plug-in

1. Scaffold by the command:
- `npm init @dtsgenerator **plugin-name**`
1. Edit `**plugin-name**/index.ts`
1. Do test:
- `npm test`
1. Build it:
- `npm run build`
1. Publish to npm:
- `npm publish`

## Development

### Debug

Output debug message by [debug](https://www.npmjs.com/package/debug) library.

DEBUG=dtsgen dtsgen schema/news.json

### Links about JSON Schema and Swagger

- [The home of JSON Schema](http://json-schema.org/)
- [The OpenAPI Specification](https://github.com/OAI/OpenAPI-Specification)

### Supported spec and features

- JSON Schema
- Draft-04 and before
- Draft-07 and before
- OpenAPI
- OpenAPI Specification version 2.0
- OpenAPI Specification version 3.0

- [supported features in these spec](https://github.com/horiuchi/dtsgenerator/blob/master/SupportedFeatures.md)

## ChangeLog

### [v3.19.2](https://github.com/horiuchi/dtsgenerator/releases/tag/v3.19.2) (2024-06-11)

- fixed:
- Support a negative number by #566. Thank you @maximebiloe :+1:

### [v3.19.1](https://github.com/horiuchi/dtsgenerator/releases/tag/v3.19.1) (2023-08-25)

- features:
- Update plugins for new TypeScript AST.
- Changed supported Node.js version to 16 or later. Also, we have confirmed that it works with Node.js v20.

### [v3.18.0](https://github.com/horiuchi/dtsgenerator/releases/tag/v3.18.0) (2023-03-02)

- features:
- Support 'application/json' with parameter media type for #551. Thank you @denizkenan :+1:

### [v3.17.0](https://github.com/horiuchi/dtsgenerator/releases/tag/v3.17.0) (2023-02-21)

- features:
- Return exit code 1 when error occurs by #549. Thank you @lhotamir :+1:

### [v3.16.2](https://github.com/horiuchi/dtsgenerator/releases/tag/v3.16.2) (2022-12-20)

- fixed:
- Fix to remove deprecated decorators parameters for #547. Thank you @mcollina :+1:

### [v3.16.0](https://github.com/horiuchi/dtsgenerator/releases/tag/v3.16.0) (2022-06-10)

- features:
- Support 'image/*' media types for #539. Thank you @Geloosa :+1:

### older versions history

[ChangeLogs](https://github.com/horiuchi/dtsgenerator/blob/master/CHANGELOG.md)

## License

`dtsgenerator` is licensed under the MIT license.

Copyright © 2016-2020, [Hiroki Horiuchi](mailto:[email protected])