从Typescript项目生成OpenApi规范

Question

We are running our typescript services on aws-lambda using the plain ApiGatewayProxyEvent instead of any express or other middlewares. Each route in the service has it's own function definition in AWS Lambda .

We would like to have a code-first approach on creating our OpenApi spec similar to what SpringFox does for Spring, but without using any runtime dependency on a framework.

In our current PoC we use typescript-rest and typescript-rest-swagger to annotate the controllers and then call swaggerGen -c ./swaggerConfig.json -p ./tsconfig.json . This provides us with the correct OpenApi Specification. However, when we run the actual function in our environment we get the following exception:

Module not found: Error: Can't resolve 'typescript-ioc' in '/(...)/node_modules/typescript-rest/dist/server'
 @ ./node_modules/typescript-rest/dist/server/server.js 105:18-72
 @ ./node_modules/typescript-rest/dist/typescript-rest.js
 @ ./src/controllers/myController.ts
 @ ./src/handlers/myHandler.ts
 @ ./src/lambda.ts

ERROR in ./node_modules/typescript-rest/dist/server/server.js
Module not found: Error: Can't resolve 'typescript-ioc/es6' in '(...)/node_modules/typescript-rest/dist/server'
 @ ./node_modules/typescript-rest/dist/server/server.js 105:18-72
 @ ./node_modules/typescript-rest/dist/typescript-rest.js
 @ ./src/controllers/myController.ts
 @ ./src/handlers/myHandler.ts
 @ ./src/lambda.ts

Our assumption is, that this is since typescript-rest is an express plugin and thus needs the service to run on express . Is there any way to create the spec without having the runtime dependencies? If not, are there other tools that allow the code-first approach?