What is the reason behind Typescript raising an error when attempting to compare two boolean variables with different values (true and false)?

In the screenshot below, you can see that we are encountering a peculiar error when attempting to compare a boolean variable with true.

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

Can anyone explain why this error occurs or what we may be overlooking?

https://i.sstatic.net/7NibF.png

Answer №1

To resolve the issue where limitReached is not recognized as a boolean, you can explicitly cast it back to boolean:

let items = [1, 2, 3];
let limitReached: boolean = false;

items.forEach(v => {
    if (v == 2) {
        limitReached = true;
    }
});

if ((limitReached as boolean) == true) {
    console.log("true")
}

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