asset bundle.js 1.18 KiB [emitted] (name: main)
./app.ts 41 bytes [built] [code generated] [1 error]

ERROR in app.ts
./app.ts 2:6-11
[90m[tsl] [39m[1m[31mERROR[39m[22m[1m[31m in [39m[22m[1m[36mapp.ts(2,7)[39m[22m
[1m[31m      TS2339: Property 'sayHi' does not exist on type 'typeof Hello'.[39m[22m
ts-loader-default_609318b4f68865d3

webpack compiled with 1 error