Set up common Node projects with npm, ESLint (Airbnb config), Prettier, EditorConfig, and .gitignore. Note that all files are saved in user directory (`~/`).

.editorconfig

# https://editorconfig.org

root = true

[*]
end_of_line = lf
insert_final_newline = true
indent_size = 2
indent_style = space
trim_trailing_whitespace = true


[*.{js,jsx,ts,tsx}]
curly_bracket_next_line = false
indent_brace_style = BSD KNF
quote_type = single
spaces_around_brackets = inside
spaces_around_operators = true

[*.{js,py}]
# Set default charset
charset = utf-8

[*.md]
trim_trailing_whitespace = false

.gitignore

# OS generated #
#--------------------#
.DS_Store

# IDE-generated
#--------------------#

# App-generated
#--------------------#
node_modules

.prettierrc.json

{
  "printWidth": 100,
  "tabWidth": 2,
  "tabs": false,
  "semi": true,
  "singleQuote": true,
  "quoteProps": "as-needed",
  "trailingCommas": "none",
  "bracketSpacing": true,
  "arrowParens": "avoid"
}

init-node-project.sh

#!/bin/sh

echo "========================="
echo "🧰 Project Initializer 🧰"
echo "========================="
echo "  🔷 This script bootstraps typical"
echo "     Node project format and lint tools."

echo
echo "-----------------------"
echo "🧰 Checking for existing Node packages..."

if [ -f package.json ]; then
  echo "  ❎ Node packages already installed."
else
  echo "  🔷 No pre-existing packages. Installing npm packages..."
  echo
  # TODO: offer choice of Yarn
  npm init -y
  echo "  ✅ Node packages installed."
fi

echo
echo "-----------------------"
echo "🧰 Checking for existing ESLint config..."

if [ -f .eslintrc.json ]; then
  echo "  ❎ ESLint config already installed."
else
  echo "  🔶 No pre-existing config..."
  echo "  ❓ Do you want to install ESLint (Airbnb config)? (Y|n)"
  read eslint
  if [[ $eslint != n ]]; then
    echo "  🔷 ESLint config reference: https://www.npmjs.com/package/eslint-config-airbnb"
    echo
    echo "  ❓ Which ESLint variant would you like to install? (1|2) 1=base (default), 2=react."
    read eslint
    if [[ $eslint != 2 ]]; then
      echo "  🔷 Installing ESLint base version..."
      echo
      # TODO: offer choice of Yarn
      npx install-peerdeps --dev eslint-config-airbnb-base
      echo "{\n  \"extends\": \"airbnb-base\"\n}" >> ./.eslintrc.json
      echo "  ✅ Airbnb ESLint base config installed."
    else
      echo "  🔷 Installing ESLint React version."
      echo
      # TODO: offer choice of Yarn
      npx install-peerdeps --dev eslint-config-airbnb
      echo "{\n  \"extends\": \"airbnb\"\n}" >> ./.eslintrc.json
      echo "  ✅ Airbnb ESLint React config installed."
    fi
  else
    echo "  ❎ Skipping ESLint install."
  fi
fi

echo
echo "-----------------------"
echo "🧰 Checking for existing Prettier config..."

if [ -f .prettierrc.json ]; then
  echo "  ❎ Prettier config already installed."
else
  echo "  🔶 No pre-existing config..."
  echo "  ❓ Do you want to install Prettier? (Y|n)"
  read prettier
  if [[ $prettier != n ]]; then
    echo "  🔷 Installing Prettier..."
    echo
    # TODO: offer choice of Yarn
    npm install --save-dev --save-exact prettier
    cp ~/.prettierrc.json ./
    echo "  ✅ Prettier installed."
  else
    echo "  ❎ Skipping Prettier install."
  fi
fi

echo
echo "-----------------------"
echo "🧰 Checking for existing other configs."
echo

if [ ! -f .editorconfig ]; then
  cp ~/.editorconfig ./
  echo "  ✅ EditorConfig added."
  echo
fi
if [ ! -f .gitignore ]; then
  cp ~/.gitignore ./
  echo "  ✅ GitIgnore added."
  echo
fi

echo
echo "=============================="
echo "🧰 Project Initializer DONE 🧰"
echo "=============================="
echo

Install

Copy files to your User directory (~/).

Usage

1. from the command line, enter

   sh ~/.init-node-project.sh

2. follow the prompts