init code style packages

init.sh

#!/bin/sh

while getopts f flag; do
    case "${flag}" in
        f) force='true';;
    esac
done

gitignoreFile=".gitignore"

eslintconfigFile=".eslintrc"
eslintignoreFile=".eslintignore"

prettierconfigFile=".prettierrc"
prettierignoreFile=".prettierignore"

gitignore() {
    ignorePatterns=("node_modules" "dist" "build" "coverage" "yarn-error.log" "npm-debug.log")

    if [ ! -f "$gitignoreFile" ] || [ $force ]; then
        printf '%b\n' "${ignorePatterns[@]}" > $gitignoreFile
    fi
}

prettier() {
    ignorePatterns=(
        "node_modules" "dist" "build" "coverage" ".husky" "package.json" "package-lock.json" "yarn.lock" 
        "$prettierconfigFile" "$prettierignoreFile" "$eslintconfigFile" "$eslintignoreFile" "$gitignoreFile"
    )

    npm list --depth=0 | grep prettier || yarn add prettier -D

    if [ ! -f "$prettierconfigFile"* ] || [ $force ]; then
        echo {} > $prettierconfigFile
        json -I -f $prettierconfigFile -e "this.singleQuote=true"
        json -I -f $prettierconfigFile -e "this.trailingComma=\"es5\""
    fi

    if [ ! -f "$prettierIgnore" ] || [ $force ]; then
        printf '%b\n' "${ignorePatterns[@]}" > $prettierignoreFile
    fi
}

eslint() {
    ignorePatterns=(
        "node_modules" "dist" "build" "coverage" ".husky" "package.json" "package-lock.json" "yarn.lock" 
        "$prettierconfigFile" "$prettierignoreFile" "$eslintconfigFile" "$eslintignoreFile" "$gitignoreFile"
    )
  
    npm list --depth=0 | grep eslint || yarn add eslint -D

    if [ ! -f "$eslintconfigFile"* ] || [ $force ]; then
        yarn create @eslint/config
    fi

    if [ ! -f "$eslintignoreFile" ] || [ $force ]; then
        printf '%b\n' "${ignorePatterns[@]}" > $eslintignoreFile
    fi
}

husky() {
    npm list --depth=0 | grep husky || yarn add husky -D
    npm list --depth=0 | grep lint-staged || yarn add lint-staged -D

    if [ ! -d ".husky" ]; then
        npm set-script prepare "husky install" && yarn prepare
    fi

    rm -f .husky/pre-commit;
    npx husky add .husky/pre-commit "yarn lint-staged"

    json -I -f package.json -e "if (!this.scripts.lint)     this.scripts.lint=\"eslint . --fix\""
    json -I -f package.json -e "if (!this.scripts.format)   this.scripts.format=\"prettier --write .\""
    json -I -f package.json -e "this['lint-staged']={...this['lint-staged']}"
    json -I -f package.json -e "this['lint-staged']['**/*.{js,jsx,ts,tsx}']=[\"yarn format\", \"yarn lint\"]"
}

yarn init -y
npm list --depth=0 | grep json || yarn add json -D

gitignore
prettier
eslint
husky