OpenAPI Semantic Validator

Perform semantic validation on an OpenAPI specification, just like Swagger Editor!

Purpose

Swagger Editor performs both structural (schema) and semantic (spec) validation of OpenAPI specifications. While swagger-parser performs structural validation, it does not (yet) support semantic validation:

Note: Validating against the OpenAPI 3.0 Specification is not (yet) supported. For now, the validate.spec option is ignored if your API is in OpenAPI 3.0 format.

-- swagger-parser docs

Once swagger-parser adds support for semantic validation, this package will be deprecated.

This package performs semantic validation by executing the validators from the swagger-editor package. It does not parse OpenAPI specifications or perform structural validation; use swagger-parser for that.

Validation Examples

Structural

NOTE: This package does not perform structural validation; use swagger-parser for that.

• should have required property 'X'
• should NOT have additional properties
• etc.

Semantic

• Operations must have unique operationIds
• Path parameter "X" must have the corresponding {X} segment in the "Y" path
• etc.

Installation

yarn add openapi-semantic-validator

Usage

This package should be used alongside swagger-parser, which provides structural validation:

const SwaggerParser = require('@apidevtools/swagger-parser')
const { validateOpenapiSemantics } = require('openapi-semantic-validator')

// parse and validate structure
const spec = await SwaggerParser.validate('openapi.yml')

// validate semantics
try {
  await validateOpenapiSemantics(spec)
  log('no semantic errors!')
} catch (err) {
  log(`semantic errors: ${JSON.stringify(err.semanticErrors)}`)
}

API

• validateOpenapiSemantics(spec)
  • Validates an OpenAPI specification
  • Inputs:
    • spec: Parsed OpenAPI specification
  • Returns: Promise
    • If no semantic errors are found, resolves
    • If semantic errors are found, rejects with an Error object containing a semanticErrors property; this is an array of objects containing:
      • level: 'error' | 'warning'
      • message: string
      • path: string[]

Development

yarn
yarn build
yarn test

License

MIT