The 'gatsby' Node module needs a type parameter appended to GatsbyAPIFunctionResponse

[nwehner]

Description

The latest version of Gatsby in NPM-land, 3.2.1, won't compile with the standard TypeScript compiler (i.e. by running tsc) because the "Type 'GatsbyAPIFunctionResponse' is not generic.".

It appears the GatsbyAPIFunctionResponse interface from node_modules/gatsby/index.d.ts is automatically generated, as I can't find a single instance of it being created in the GitHub codebase. The interface simply needs the type parameter appended to it for the type to be correct.

Steps to reproduce

Opening up the node_modules/gatsby/index.d.ts file in any IDE will show the missing type parameter error.

Incorrect type

/**
* Gatsby API Function route response
*/
export interface GatsbyAPIFunctionResponse extends ServerResponse {
/**
* Send "any" data in response
*/
send: Send<T>
/**
* Send "JSON" data in response
*/
json: Send<T>
/**
* Set the HTTP status code of the response
*/
status: (statusCode: number) => GatsbyAPIFunctionResponse<T>
redirect(url: string): GatsbyAPIFunctionResponse<T>
redirect(status: number, url: string): GatsbyAPIFunctionResponse<T>
}

Correct type

The GatsbyAPIFunctionResponse just needs the type parameter appended to it so the compiler knows what T means within the interface.
/**
* Gatsby API Function route response
*/
export interface GatsbyAPIFunctionResponse<T> extends ServerResponse {
...
}

[maximeg]

Same thing.

The thing seems to have been renamed to GatsbyFunctionResponse in master, but the issue is still there.