• Edit ts config file for es modeuls(target, module, moduleResolution)
• Generate package.json file with npm init --yes
• Add "type": "module" in the package.json file
• Add shebang in your script file #! /usr/bin/env node
• Write your calculator code with inquirer
• Add "bin": {"calc": "calculator.js"} in the package.json file
• update your package name from package.json in my case it is @hamzahsyedd/calc where hamzahsyedd is my username
• Test your script locally, npx calc
• Signup to npm
• Run the command npm login
• Add credentials or it will redirect you to the browser for authentication
• publish the script using npm publish --access public
• run command based on the package name in my case it is npx @hamzahsyedd/calc

Note:

• Make sure when you add name like @hamzahsyedd/calc, after @ should be your username if you enter some other name for eg @abc/calc it will throw an error

• When you update your package make sure to change it's version from the package.json file