Intro

It's not a runtime language

tsconfig.json

Option specification

https://zhongsp.gitbooks.io/typescript-handbook/content/doc/handbook/Compiler%20Options.html

http://json.schemastore.org/tsconfig

• rootDir : tsconfig.json的屬性只對rootDir所指定的資料夾有用

Question

Specify module code generation : tsc -m system