Nodejs syntax

• require('node:fs') vs require('fs')
• When to use classic function or arrow function
• [assert] to assert a value should be null, use assert.ifError(value)

Build CLI binary by nodejs

• use shebang #!/usr/bin/env node in nodejs source code
• References
  • https://developer.okta.com/blog/2019/06/18/command-line-app-with-nodejs
  • https://stackoverflow.com/questions/18193953/waiting-for-user-to-enter-input-in-node-js/50890409

Regular Expression (Regex)

• If you need to know if a string matches a regular expression RegExp, use RegExp.prototype.test().
• If you only want the first match found, you might want to use RegExp.prototype.exec() instead.
• If you want to obtain capture groups and the global flag is set, you need to use RegExp.prototype.exec() or String.prototype.matchAll() instead.
• String.prototype.match() won't return groups if the /.../g flag is set. However, you can still use String.prototype.matchAll() to get all matches.
• If you want to match a repeated pattern (e.g. substring) but don't want to have it in captured group, use Non-capturing-group syntax
  • (?:pattern)