Declarations breaks typescript build when "skipLibCheck" is false

[JuanMurciaN]

Environment:

• nodejs 18.20.4
• npm 10.5.1

The library breaks typescript projects that check library's .d.ts files because a handful of these files are missing the exported members. Attached is a dummy project that recreates the failure, but it can be easily recreated by

• Create a new npm project with npm init
• Install typescript
• Init typescript with npx tsc --init
• Remove, or set to false skipLibCheck inside tsconfig.json
• Install the library with npm i ews-javascript-api
• Create a dummy file that imports something from the library
• Build using npx tsc

dummy.zip

[gautamsi]

there are some problem which breaks this specific flag, PR welcome.