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/** `Object#toString` result references. */
var boolTag = '[object Boolean]',
dateTag = '[object Date]',
errorTag = '[object Error]',
numberTag = '[object Number]',
regexpTag = '[object RegExp]',
stringTag = '[object String]';
/**
* A specialized version of `baseIsEqualDeep` for comparing objects of
* the same `toStringTag`.
*
* **Note:** This function only supports comparing values with tags of
* `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
*
* @private
* @param {Object} object The object to compare.
* @param {Object} other The other object to compare.
* @param {string} tag The `toStringTag` of the objects to compare.
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
*/
function equalByTag(object, other, tag) {
switch (tag) {
case boolTag:
case dateTag:
// Coerce dates and booleans to numbers, dates to milliseconds and booleans
// to `1` or `0` treating invalid dates coerced to `NaN` as not equal.
return +object == +other;
case errorTag:
return object.name == other.name && object.message == other.message;
case numberTag:
// Treat `NaN` vs. `NaN` as equal.
return (object != +object)
? other != +other
: object == +other;
case regexpTag:
case stringTag:
// Coerce regexes to strings and treat strings primitives and string
// objects as equal. See https://es5.github.io/#x15.10.6.4 for more details.
return object == (other + '');
}
return false;
}
module.exports = equalByTag;
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