Used const instead of let for variables that do not change.
Used for...of loops instead of for...in loops when iterating over arrays.
Used optional chaining (?.) and nullish coalescing (??) to handle null or undefined values.
Used Promise.all() to save contacts asynchronously and in parallel.
This code uses await inside the map() function to handle the asynchronous saving of each contact in parallel
Also, contact.name has been replaced with *contact?.name ?? 'User', which uses optional chaining and nullish coalescing to handle the case where contact is null or undefined.
optional chaining (?.)andnullish coalescing (??)to handle null or undefined values.Promise.all()to save contacts asynchronously and in parallel.This code uses await inside the
map()function to handle the asynchronous saving of each contact in parallel Also, contact.name has been replaced with *contact?.name ?? 'User', which uses optional chaining and nullish coalescing to handle the case where contact is null or undefined.Cheers! @LAKSHIBRO