Cannot find name 'function' after upgrade to 1.2.9

[pjunlin]

Hi,
We meet npm run build error when upgrade this library to version 1.2.9, any idea about this? There is no issue for 1.2.7

node_modules/jsonschema/lib/index.d.ts:98:27 - error TS2304: Cannot find name 'function'.

98 preValidateProperty?: function;

[pjunlin]

@awwright , seems related to your submit in 4ae8610.
Thank you!

[awwright]

@pjunlin What is giving you the error? I'm not sure how to write a test for this

[pjunlin]

@awwright does this
preValidateProperty?: function syntax related to specific node version , my node -v returns v12.18.0,
and my project has dev dependency on your latest 1.2.9 version jsonschema, and it just failed when run
npm run build

[pjunlin]

testjsonschema.zip
@awwright I upload a very simple project for you to test, just run npm i and npm run build
And it fails with

$ npm run build

testjsonschema@1.0.0 build C:\Users\i\Desktop\testjsonschema
tsc

node_modules/jsonschema/lib/index.d.ts:98:27 - error TS2304: Cannot find name 'function'.

98 preValidateProperty?: function;
~~~~~~~~

Found 1 error.

npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! testjsonschema@1.0.0 build: tsc
npm ERR! Exit status 2
npm ERR!
npm ERR! Failed at the testjsonschema@1.0.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\i\AppData\Roaming\npm-cache_logs\2020-10-07T06_53_28_162Z-debug.log

[zsgalusz]

function is not valid typescript in the type definition there, it should be capitalised Function

[awwright]

@pjunlin @zsgalusz This should be fixed in 1.2.10, c820ba8

Could you consider submitting a PR to add a test for this bug? I'm not sure where to start.

[awwright]

I'm going to close this out because the bugfix is published. Please see #316 for adding tests.