如何比较 TypeScript 中的 2 个 boolean 值

Question

I'm trying to compare to boolean value in a if . I would like to do something like this:

value1 = false;
value2 = true;

if (value1 === value2) {
  ... Some code ...
}

In JAVA you can use Boolean.compare(boolean a, boolean b) , but I can't find something equal in TypeScript.
For context, Boolean.compare(boolean a, boolean b) returns :

• 0 if a is equal to b ,
• a negative value if a is false and b is true,
• a positive value if a is true and b is false.

Thanks for you help

Edited: to show the message I get

This condition will always return 'false' since the types 'true' and 'false' have no overlap

Answer 1

Javascript doesn't have a builtin that's comparable to Java's Boolean.compare() . In fact, the Boolean class has nearly nothing in it, outside the constructor, toString() and valueOf() .

If you want to replicate the functionality yourself, you can use the Number constructor .

function booleanCompare(a: boolean, b: boolean) {
    return Number(a) - Number(b);
}