error TS2315: Type 'Middleware' is not generic

[sebs]

Checking this repo out, on a OSX machine using node 9.5.0 I get the following errors

npm run build-server

node_modules/@types/koa-compose/index.d.ts(11,18): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(11,42): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(12,4): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(15,18): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(15,42): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(15,66): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(16,4): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(19,18): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(19,42): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(19,66): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(19,90): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(20,4): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(24,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(24,33): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(24,57): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(24,81): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(25,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(27,4): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(31,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(31,33): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(31,57): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(31,81): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(32,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(32,33): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(34,4): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(38,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(38,33): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(38,57): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(38,81): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(39,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(39,33): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(39,57): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(41,4): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(45,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(45,33): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(45,57): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(45,81): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(46,9): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(46,33): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(46,57): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(46,81): error TS2315: Type 'Middleware' is not generic.
node_modules/@types/koa-compose/index.d.ts(48,4): error TS2315: Type 'Middleware' is not generic.