d2-ui
Version:
20 lines (17 loc) • 534 B
JavaScript
var regexExec = RegExp.prototype.exec;
var tryRegexExec = function tryRegexExec(value) {
try {
regexExec.call(value);
return true;
} catch (e) {
return false;
}
};
var toStr = Object.prototype.toString;
var regexClass = '[object RegExp]';
var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
module.exports = function isRegex(value) {
if (typeof value !== 'object') { return false; }
return hasToStringTag ? tryRegexExec(value) : toStr.call(value) === regexClass;
};
;