before yarn deduplicate

before yarn deduplicate directory structure

.
├── node_modules
│   └── @types
│       ├── fs-extra
│       │   ├── LICENSE
│       │   ├── README.md
│       │   ├── index.d.ts
│       │   ├── node_modules
│       │   │   └── @types
│       │   │       └── node
│       │   │           ├── LICENSE
│       │   │           ├── README.md
│       │   │           ├── index.d.ts
│       │   │           ├── inspector.d.ts
│       │   │           └── package.json
│       │   └── package.json
│       └── node
│           ├── LICENSE
│           ├── README.md
│           ├── index.d.ts
│           ├── inspector.d.ts
│           └── package.json
├── package.json
└── yarn.lock

package.json

{
  "name": "yarn-dedup-examples",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "devDependencies": {
    "@types/fs-extra": "^5.0.4",
    "@types/node": "^8"
  },
  "dependencies": {}
}

yarn.lock

# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1


"@types/fs-extra@^5.0.4":
  version "5.0.4"
  resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-5.0.4.tgz#b971134d162cc0497d221adde3dbb67502225599"
  integrity sha512-DsknoBvD8s+RFfSGjmERJ7ZOP1HI0UZRA3FSI+Zakhrc/Gy26YQsLI+m5V5DHxroHRJqCDLKJp7Hixn8zyaF7g==
  dependencies:
    "@types/node" "*"

"@types/node@*":
  version "10.12.19"
  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.12.19.tgz#ca1018c26be01f07e66ac7fefbeb6407e4490c61"
  integrity sha512-2NVovndCjJQj6fUUn9jCgpP4WSqr+u1SoUZMZyJkhGeBFsm6dE46l31S7lPUYt9uQ28XI+ibrJA1f5XyH5HNtA==

"@types/node@^8":
  version "8.10.39"
  resolved "https://registry.yarnpkg.com/@types/node/-/node-8.10.39.tgz#e7e87ad00364dd7bc485c940926345b8ec1a26ca"
  integrity sha512-rE7fktr02J8ybFf6eysife+WF+L4sAHWzw09DgdCebEu+qDwMvv4zl6Bc+825ttGZP73kCKxa3dhJOoGJ8+5mA==