Simple question: Is there a way to use an expansion inside a conditional statement using the ternary operator?
const a = 1, b = 2;
// Works
console.log(...[ a, b ]);
// Works
console.log(...(a ? [ a, b ] : [ 'Not found' ]));
// Doesn't work
console.log(a ? ...[ a, b ] : 'Not found');Unfortunately this isn’t currently possible. The … spread syntax, like its name tells us, is a part of the syntax of the language and not a ‘normal’ operator that deals with expressions (à la + or typeof). The ternary operator needs expressions after the ? and :, so you can’t use the syntax in those spots.
You’ll have to do e.g.
condition
? console.log(…)
: console.log(…)
Yes and No
No, because in some cases it is not supported
Yes, you need to use it in the way it supports, basically manipulate it
For example
const a = 1, b = 2;
// Works
console.log(...[ a, b ]);
// Doesn't work
//console.log(a ? ...[ a, b ] : 'Not found');
//use this
a ? console.log(...[a,b]) : "Not Found"
//you can have other ways too to achieve this