lib/formatter.js
function parameter(value) {
    if (typeof value === 'function') {
      return this.outputQuery(this.compileCallback(value), true);
    }
    return this.unwrapRaw(value, true) || '?';
  }
function parameter(value) {
    if (typeof value === 'function') {
      return this.outputQuery(this.compileCallback(value), true);
    }
    return this.unwrapRaw(value, true) || '?';
  }
function parameter ( value ) { if ( typeof value === 'function' ) { return this . outputQuery ( this . compileCallback ( value ) , true ) ; } return this . unwrapRaw ( value , true ) || '?' ; }
Checks whether a value is a function... if it is, we compile it otherwise we check whether it's a raw
Checks whether a value is a function ... if it is we compile it otherwise we check whether it s a raw