ternary.js

/**
 * It's not hard to imagine JavaScript not having ternary statements, 
 * and having to implement these in userland. What would that look like?
 * @param leftOrRight a maybe truthy value.
 * @param left if truthy
 * @param right otherwise
 */
function ternary(leftOrRight, left, right) {
  if (leftOrRight) {
    return left;
  }
  return right;
}

/**
 * So:
 * `prop.a || prop.b || prop.c ? 1 : 0`
 * Becomes:
 * `ternary(prop.a || prop.b || prop.c, 1, 0);`
 * That whole first statement is a single value:
 * `true`
 * Because prop.a is falsy, but prop.b is truthy.
 * Incidentally:
 * You'd have to verify, but I think whether or
 * not prop.c is even evaluated in this case is
 * specified in the language.
 * 
 */