Monorepo

Yarn workspace

• Add packages folder configs to package.json.

{
  "private": true,
  "workspaces": {
    "packages": [
      "packages/*"
    ],
    "nohoist": []
  },
}

• Create package folder

mkdir packages/core

• Config pacakge.json of workspace

{
  "name": "@my-workspace/core",
  "version": "1.0.0"
}

• Add sample function to ensure it works

index.js

function foo() {
  console.log("hello workspace");
}

export default foo;

index.d.ts

declare function foo(): void;
export default foo

• Install worksapce pacakge in main project

yarn -W add @my-workspace/core@1.0.0

{
  "dependencies": {
+    "@my-workspace/core": "1.0.0"
  }
}

• Import package in apps.

import foo from "@my-workspace/core"

foo()