# E0343: using '==' against a class literal always returns 'false'

In JavaScript, you can create a class in an expression. The class is a brand new class, so comparing the class using `==`, `===`, `!=`, or `!==` will always give the same result (`false` or `true`):

    let Logger;
    if (__DEBUG__) {
      Logger = class {
        log(msg) { console.log(msg); }
      };
    } else {
      Logger == class {
        log(msg) { }
      };
    }

To fix this error, write `=` instead of `==`:

    let Logger;
    if (__DEBUG__) {
      Logger = class {
        log(msg) { console.log(msg); }
      };
    } else {
      Logger = class {
        log(msg) { }
      };
    }

Introduced in quick-lint-js version 2.10.0.

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