returnFuncToAsyncFunc
Sometimes you have a function, that you're planning to use within something like async.waterfall but it's wrote to be synchronous and returns a value instead of using a callback. This function will accept that function, along with a context and return an asynchronous version of that function
Example
var Ctx = function() {
this.x = 123;
};
Ctx.prototype.doIt = function(a, b, c) {
return { age: a, legs: b[2], name: c.name};
};
var ctx = new Ctx();
var f = returnFuncToAsyncFunc(
ctx,
function(a, b, c) {
return ctx.doIt(a, b, c);
}
);
f(99, [4,6,2], {name: 'matt'}, function(err, res) {
console.log([
"My name is " + res.name,
"I have " + res.legs + " legs",
"and am " + res.age + " years old"
].join(' '));
});