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Add debounce class method #2

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Add debounce class method #2

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779981e
Add debounce class method
omriAckley Jan 26, 2016
8e44924
Fix indenting
omriAckley Jan 26, 2016
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15 changes: 15 additions & 0 deletions lib/extend.js
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Expand Up @@ -6,6 +6,21 @@ module.exports = function (Potential, $Promise) {

//----- promise methods -----

$Promise.debounce = function (sourceFn) {

@glebec glebec Jun 24, 2016

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$Promise is the internal promise class and is not exposed to the user — this can be placed on Potential, which is the library / public API namespace.

var pending;
function resetPending () {
pending = null;
}
resetPending();
return function () {
if (!pending) {
pending = Promise.resolve(sourceFn.apply(this, arguments));
pending.then(resetPending, resetPending);
}
return pending;
};
};

// syntactic sugar for adding error handlers
$Promise.prototype.catch = function (onRejected) {
return this.then(null, onRejected);
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