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@spec2ts/openapi

v3.1.2

Published

Utility to convert OpenAPI v3 specifications to Typescript using TypeScript native compiler

Downloads

3,524

Readme

@spec2ts/openapi

NPM version NPM download Build Status

@spec2ts/openapi is an utility to create TypeScript types from OpenAPI v3 specification. Unlike other code generators @spec2ts/openapi does not use templates to generate code but uses TypeScript's built-in API to generate and pretty-print an abstract syntax tree (AST).

Features

  • AST-based: Unlike other code generators @spec2ts/openapi does not use templates to generate code but uses TypeScript's built-in API to generate and pretty-print an abstract syntax tree.
  • Tree-shakeable: Individually exported types allows you to bundle only the ones you actually use.
  • YAML or JSON: Use YAML or JSON for your OpenAPI v3 specification.
  • External references: Resolves automatically external references and bundle or import them in generated files.
  • Implementation agnostic: Use generated types in any projet or framework.

Installation

Install in your project:

npm install @spec2ts/openapi

CLI Usage

oapi2ts [options] <input..>

Generate TypeScript types from OpenAPI specification

Positionals:
  input  Path to OpenAPI Specification(s) to convert to TypeScript      [string]

Options:
  --version     Show version number                                    [boolean]
  --help        Show help usage                                        [boolean]
  --output, -o  Output directory for generated types                    [string]
  --cwd, -c     Root directory for resolving $refs                      [string]
  --avoidAny    Avoid the `any` type and use `unknown` instead         [boolean]
  --enableDate  Build `Date` for format `date` and `date-time`         [boolean]
  --banner, -b  Comment prepended to the top of each generated file     [string]

Programmatic Usage

import { printer } from "@spec2ts/core";
import { parseOpenApiFile } from "@spec2ts/openapi";

async function generateSpec(path: string): Promise<string> {
    const result = await parseOpenApiFile(path);
    return printer.printNodes(result);
}

Implementations

  • [x] Types for parameters:
    • [x] path
    • [x] header
    • [x] query
    • [x] cookie
  • [x] Types for requestBody
  • [x] Types for responses
  • [x] Automatic naming
    • [x] From operationId
    • [x] From path
  • [x] Parameters merging
    • [x] From path item
    • [x] From operation
    • [x] Override from operation
  • [x] Schema references
    • [x] Local (filesystem) schema references
    • [x] External (network) schema references
  • [x] Modular architecture
    • [x] Import local references
    • [x] Embed external references

Compatibility Matrix

| TypeScript version | spec2ts version | |--------------------|-----------------| | v3.x.x | v1 | | v4.x.x | v2 |

License

This project is under MIT License. See the LICENSE file for the full license text.