`gitignore.io` とは

gitignore.ioは、環境、言語に合わせて.gitignoreを生成してくれるサービス。
`gitignore.io` を試す

対象の環境、言語を選択する。
　1. macOS
　2. VisualStudioCode
　3. react
　4. Firebase
　5. Node
Createをクリックする。

# Created by https://www.gitignore.io/api/node,react,macos,firebase,visualstudiocode
# Edit at https://www.gitignore.io/?templates=node,react,macos,firebase,visualstudiocode

### Firebase ###
.idea
**/node_modules/*
**/.firebaserc

### Firebase Patch ###
.runtimeconfig.json
.firebase/

### macOS ###
# General
.DS_Store
.AppleDouble
.LSOverride

# Icon must end with two \r
Icon

# Thumbnails
._*

# Files that might appear in the root of a volume
.DocumentRevisions-V100
.fseventsd
.Spotlight-V100
.TemporaryItems
.Trashes
.VolumeIcon.icns
.com.apple.timemachine.donotpresent

# Directories potentially created on remote AFP share
.AppleDB
.AppleDesktop
Network Trash Folder
Temporary Items
.apdisk

### Node ###
# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
lerna-debug.log*

# Diagnostic reports (https://nodejs.org/api/report.html)
report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json

# Runtime data
pids
*.pid
*.seed
*.pid.lock

# Directory for instrumented libs generated by jscoverage/JSCover
lib-cov

# Coverage directory used by tools like istanbul
coverage
*.lcov

# nyc test coverage
.nyc_output

# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
.grunt

# Bower dependency directory (https://bower.io/)
bower_components

# node-waf configuration
.lock-wscript

# Compiled binary addons (https://nodejs.org/api/addons.html)
build/Release

# Dependency directories
node_modules/
jspm_packages/

# TypeScript v1 declaration files
typings/

# TypeScript cache
*.tsbuildinfo

# Optional npm cache directory
.npm

# Optional eslint cache
.eslintcache

# Optional REPL history
.node_repl_history

# Output of 'npm pack'
*.tgz

# Yarn Integrity file
.yarn-integrity

# dotenv environment variables file
.env
.env.test

# parcel-bundler cache (https://parceljs.org/)
.cache

# next.js build output
.next

# nuxt.js build output
.nuxt

# rollup.js default build output
dist/

# Uncomment the public line if your project uses Gatsby
# https://nextjs.org/blog/next-9-1#public-directory-support
# https://create-react-app.dev/docs/using-the-public-folder/#docsNav
# public

# Storybook build outputs
.out
.storybook-out

# vuepress build output
.vuepress/dist

# Serverless directories
.serverless/

# FuseBox cache
.fusebox/

# DynamoDB Local files
.dynamodb/

# Temporary folders
tmp/
temp/

### react ###
.DS_*
**/*.backup.*
**/*.back.*

node_modules

*.sublime*

psd
thumb
sketch

### VisualStudioCode ###
.vscode/*
!.vscode/settings.json
!.vscode/tasks.json
!.vscode/launch.json
!.vscode/extensions.json

### VisualStudioCode Patch ###
# Ignore all local history of files
.history

# End of https://www.gitignore.io/api/node,react,macos,firebase,visualstudiocode