Fixes #201

[alex-sherwin]

Updated the return type of DEBUGFUNCTION to be 0 instead of void in accordance with the libcurl docs, see https://curl.haxx.se/libcurl/c/CURLOPT_DEBUGFUNCTION.html

[JCMais]

@alex-sherwin thanks for the PR.

Your change must be made here:

node-libcurl/scripts/data/options.js

Line 42 in 2f13c6e

DEBUGFUNCTION: '((type: number, data: Buffer) => void)',

Those type definitions are automatically generated. You can keep the changes you already made so you don't have to regenerate them, just add it in the options.js file above.

[alex-sherwin]

Updated with changes to

node-libcurl/scripts/data/options.js

Line 42 in 2f13c6e

DEBUGFUNCTION: '((type: number, data: Buffer) => void)',

I ran the generator, but it updated with a bunch of other things apparently currently missing from the code-generated output, so I discarded everything but the changes relevant to DEBUGFUNCTION

[JCMais]

Yeah, it will retrieve all newer options from libcurl and add them, I will run it later on. Thanks for the PR. I will try to get a patch release this weekend.