yarn why after

yarn why v1.21.1
[1/4] Why do we have the module "@babel/code-frame"...?
[2/4] Initialising dependency graph...
[3/4] Finding dependency...
[4/4] Calculating file sizes...
=> Found "@babel/code-frame@7.8.3"
info Has been hoisted to "@babel/code-frame"
info Reasons this module exists
   - Hoisted from "tslint#@babel#code-frame"
   - Hoisted from "@babel#core#@babel#code-frame"
   - Hoisted from "react-scripts#babel-eslint#@babel#code-frame"
   - Hoisted from "react-scripts#eslint#@babel#code-frame"
   - Hoisted from "react-scripts#@babel#core#@babel#code-frame"
   - Hoisted from "@babel#core#@babel#traverse#@babel#code-frame"
   - Hoisted from "@babel#core#@babel#template#@babel#code-frame"
   - Hoisted from "react-scripts#babel-preset-react-app#@babel#core#@babel#code-frame"
   - Hoisted from "react-scripts#babel-preset-react-app#babel-plugin-macros#cosmiconfig#parse-json#@babel#code-frame"
   - Hoisted from "react-scripts#jest#jest-cli#@jest#core#jest-message-util#@babel#code-frame"
info Disk size without dependencies: "24KB"
info Disk size with unique dependencies: "44KB"
info Disk size with transitive dependencies: "388KB"
info Number of shared dependencies: 10
=> Found "react-dev-utils#@babel/code-frame@7.5.5"
info This module exists because "react-scripts#react-dev-utils" depends on it.
info Disk size without dependencies: "24KB"
info Disk size with unique dependencies: "44KB"
info Disk size with transitive dependencies: "388KB"
info Number of shared dependencies: 10
Done in 2.29s.

yarn why v1.21.1
[1/4] Why do we have the module "@types/istanbul-lib-report"...?
[2/4] Initialising dependency graph...
[3/4] Finding dependency...
[4/4] Calculating file sizes...
=> Found "@types/istanbul-lib-report@3.0.0"
info Reasons this module exists
   - "@jest#types#@types#istanbul-reports" depends on it
   - Hoisted from "@jest#types#@types#istanbul-reports#@types#istanbul-lib-report"
info Disk size without dependencies: "20KB"
info Disk size with unique dependencies: "36KB"
info Disk size with transitive dependencies: "36KB"
info Number of shared dependencies: 1
Done in 2.25s.

yarn why v1.21.1
[1/4] Why do we have the module "@types/node"...?
[2/4] Initialising dependency graph...
[3/4] Finding dependency...
[4/4] Calculating file sizes...
=> Found "@types/node@11.13.0"
info Has been hoisted to "@types/node"
info This module exists because it's specified in "dependencies".
info Disk size without dependencies: "720KB"
info Disk size with unique dependencies: "720KB"
info Disk size with transitive dependencies: "720KB"
info Number of shared dependencies: 0
=> Found "@types/glob#@types/node@13.1.8"
info This module exists because "react-scripts#webpack-dev-server#del#@types#glob" depends on it.
info Disk size without dependencies: "764KB"
info Disk size with unique dependencies: "764KB"
info Disk size with transitive dependencies: "764KB"
info Number of shared dependencies: 0
=> Found "@wry/context#@types/node@13.1.8"
info This module exists because "apollo-boost#apollo-cache-inmemory#optimism#@wry#context" depends on it.
info Disk size without dependencies: "764KB"
info Disk size with unique dependencies: "764KB"
info Disk size with transitive dependencies: "764KB"
info Number of shared dependencies: 0
Done in 2.26s.