Message from JavaScript discussions

January 2017

— Is there any way to force a scope closure over a pre defined callback?


Ie for

var thing = "hello";
var myCallback = function () {

is there any way to invoke the callback in a way that removes thing from the scope

— Instead of "hello" I want undefined

— I don't think so. The most similar thing could be redefining with let the variables you would use inside the function.

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— But that is not on a pre defined callback

— Hmm, thought so

— I wanted to see if I could restrict what enters the callback scope

— Guess a big warning sign that says "don't put shit in here" will suffice

— Floofies I think that you could enforce that with webworkers

— That depends, I let the developer supply their own callback


dataStore.addAction("myAction", function (state, parameters) {
state.prop = "value";
return state;

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— I don't want them putting in other sources of data