break Statement is used to break out of a loop statements like for, while, switch etc. We cannot use it for other purpose.

Sample Code to Reproduce the Exception:

let numArray = [ 1, 2, 3, 4, 5, 6 ];
let output = 0;

numArray.forEach( val => {

    output += val;

    if ( output > 5 ) {

        break;

    }

} );

console.log( 'Output is', output );

every method should be used if you are not using loop statements.

Fix for the above code:

let numArray = [ 1, 2, 3, 4, 5, 6 ];
let output = 0;

numArray.every( val => {

    output += val;

    if ( output > 5 ) {

        return false;

    }

    return true;

} );

console.log( 'Output is', output );