Initialise a new node project with typescript

initTypescriptProject.sh

# Initialise a new node project with typescript
# usage:
# > ./initTypescriptProject.sh my-app-name

PROJECT_NAME=$1

mkdir $PROJECT_NAME
cd $PROJECT_NAME
npm init -y
yarn add --dev typescript ts-node nodemon rimraf @types/node jest

# init typescript
npx tsc --init --rootDir src --outDir build \
--esModuleInterop --resolveJsonModule --lib es6 \
--module commonjs --allowJs true --noImplicitAny true

# source directory
mkdir src
touch src/index.ts
echo "console.log('Hello world!')" > src/index.ts

# watch mode
touch nodemon.json
cat <<EOT >> nodemon.json
{
  "watch": ["src"],
  "ext": ".ts,.js",
  "ignore": [],
  "exec": "npx ts-node ./src/index.ts"
}
EOT

# update package.json scripts
echo "$(jq '.scripts.test="jest" | .scripts."start:dev"="npx nodemon" | .scripts.build="rimraf ./build && tsc" | .scripts.start="npm run build && node build/index.js"' package.json)" > package.json