You can't accept string or regexp 'cause strings cannot be flags this way so beside split I don't know where this could work. flags like i, or u, are also important, being unable to pass these even in split doesn't look like a good idea, IMO
On Mon, Jun 15, 2015 at 1:22 PM, Denis Pushkarev <[email protected]> wrote: > This logic is convenient if function accept string or regexp, like > `String#split`, for convert it to regexp. Behavior with second argument is > changed in ES6 and fixed in latest FF, `core-js` and `es6-shim`. Sorry for > reply w/o subject - problem with mail client :) > > 15.06.2015, 17:36, "Andrea Giammarchi" <[email protected]>: > > that's no how usually you create RegExp > > ```js > RegExp('yep', 'g'); > new RegExp('yep', 'g'); > ``` > both will produce similar RegExp instances (every time a new one). > > Using the RegExp constructor as RegExp wrapper is a very unusual pattern I > haven't seen before. So yes, in that case we have some sort of unusual > behavior that yet makes little sense to me because `RegExp.length` is 2 and > you are potentially ignoring the second argument > > ``` > TypeError: Cannot supply flags when constructing one RegExp from another > at new RegExp > ``` > > So beside creating a `new RegExp` from another `RegExp` knowing what you > are doing is the only pattern I can think of that might make sense (in > terms of having index and stuff reset ... if that's even the case) > > Good spot though. > > Regards > > > > > > > > On Mon, Jun 15, 2015 at 8:37 AM, Rock <[email protected]> wrote: > > Benjamin Gruenaum, Andrea Giammarchi, you are wrong about RegExp: > ```js > var re = /./; > new RegExp(re) === re; // false > RegExp(re) === re; // true > ``` > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > > > > -- > С уважением, > Denis Pushkarev > 79619864927 > >
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