checklist.md

1. Make names descriptive, so they explain the purpose of variables and functions.
2. Don't use literals in expressions (HARDCODE). Instead use constants explaining this values
   • BAD EXAMPLE:

   if (numberOfDays >= 7) {
     return basePrice - 50;
   }

   • GOOD EXAMPLE:

   const LONG_TERM = 7;
   const LONG_TERM_DISCOUNT = 50;
   
   if (numberOfDays >= LONG_TERM) {
     return basePrice - LONG_TERM_DISCOUNT;
   }

3. Prefer const over let where possible, to avoid unintentional changes.
4. Prefer if with return over if else to simplify later conditions.
5. DON'T add else after if with return - the code after it won't be executed anyway.
   • BAD EXAMPLE:

   if (condition) {
     return x;
   } else {
     return y;
   }

   • GOOD EXAMPLE:

   if (condition) {
     return x;
   }
   
   return y;