function defaultTo(value, defaultValue) {
      return (value == null || value !== value) ? defaultValue : value;
    }
Checks `value` to determine whether a default value should be returned in
its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
or `undefined`.

@static
@memberOf _
@since 4.14.0
@category Util
@param {*} value The value to check.
@param {*} defaultValue The default value.
@returns {*} Returns the resolved value.
@example

_.defaultTo(1, 10);
// => 1

_.defaultTo(undefined, 10);
// => 10