On Thu, May 15, 2014 at 11:33 AM, Michaël Rouges <[email protected]> wrote: > Hi all, > > As I totally agree that a promise can only be resolved or rejected once ... > so I think his behavior is perhaps too black or white. > > As IRL, when we receive a promise, we expect that the author makes every > effort to resolve it, by any way. > > Progammatically, we can wish the same. > > By example, we can have : > > an error to ignore > an error that requires to execute other operations leading to > > a rejection > a continuation > a retry > > To cover all these cases, in the current promises state, we can have (a > quite) complex promises, easily solvable. > > My idea? the negociation, where the goal is to find a solution to resolve it > (rejection reduction). > > For the promise "fn" argument, to add an optional "negociate" argument. > > ``` > promise = new Promise(function (resolve, reject, negociate) { > // the promise body > }); > ``` > > An the related Promise.negociate method like : > > ``` > Promise.negociate = function negociate(resolve, reject, negociate, retry, > value) { > }; > ``` > > That returns a promise, negociable too, where : > > resolve is shared with the original promise (that contains the negociate > call) to continue the process > reject is shared with the original promise (that contains the negociate > call) > negociate, it's own negociation, for multiple attempts/behaviors > retry to recall the original promise fn argument (compliant with the > promises concept, since our promise was neither rejected nor resolved, at > this point) > value (or values, I'm not sure) to pass some infos/tools that we need to > take our decision, in the negociation process > > > Lemme your advices. ;)
This is just normal promise chaining. If you get a promise and want to make *sure* it resolves in a particular way, just use .then() or .catch() to create a new promise that handles things the way you want. ~TJ _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
