Lerna monorepo + yarn workspaces + typescript project references + tsc --build

Features

• lerna monorepo
• yarn workspaces
• typescript project references for incremental build setup according to https://www.typescriptlang.org/docs/handbook/project-references.html

Organization

There are two packages:

• common, which exports a sayHello() function returning a single string
• use-common, which references common to log sayHello() to the console

Building

• yarn build uses tsc to build packages in proper order using references
• yarn start runs use-common to print sayHello() to console, incrementally compiling common if necessary

Setting up this repo

yarn install
yarn build
yarn start

Then, change the sayHello string in common and do another yarn start. Common will be rebuilt automatically.

tsc --build --verbose is used so that you can see the dependency logic tsc uses to determine when to rebuild.