[mLuby]

First time I've ever seen JS blocks statements in the wild; I wonder if the author is coming from a language where that's common.

[bruce343434]

>JS blocks statements

What are those?

[mLuby]

    { // Start of block statement.
      const foo = "a" + 2; // Only available inside block statement.
      console.log(foo); // "a2"
    } // End of block statement.
    console.log(foo); // Uncaught ReferenceError: foo is not defined