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var UNDEF;
/**
* Parses string and convert it into a native value.
*/
function typecast(val) {
var r;
if ( val === null || val === 'null' ) {
r = null;
} else if ( val === 'true' ) {
r = true;
} else if ( val === 'false' ) {
r = false;
} else if ( val === UNDEF || val === 'undefined' ) {
r = UNDEF;
} else if ( val === '' || isNaN(val) ) {
//isNaN('') returns false
r = val;
} else {
//parseFloat(null || '') returns NaN
r = parseFloat(val);
}
return r;
}
module.exports = typecast;