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- "use strict";
- module.exports = function(Promise, INTERNAL, tryConvertToPromise, debug) {
- var calledBind = false;
- var rejectThis = function(_, e) {
- this._reject(e);
- };
-
- var targetRejected = function(e, context) {
- context.promiseRejectionQueued = true;
- context.bindingPromise._then(rejectThis, rejectThis, null, this, e);
- };
-
- var bindingResolved = function(thisArg, context) {
- if (((this._bitField & 50397184) === 0)) {
- this._resolveCallback(context.target);
- }
- };
-
- var bindingRejected = function(e, context) {
- if (!context.promiseRejectionQueued) this._reject(e);
- };
-
- Promise.prototype.bind = function (thisArg) {
- if (!calledBind) {
- calledBind = true;
- Promise.prototype._propagateFrom = debug.propagateFromFunction();
- Promise.prototype._boundValue = debug.boundValueFunction();
- }
- var maybePromise = tryConvertToPromise(thisArg);
- var ret = new Promise(INTERNAL);
- ret._propagateFrom(this, 1);
- var target = this._target();
- ret._setBoundTo(maybePromise);
- if (maybePromise instanceof Promise) {
- var context = {
- promiseRejectionQueued: false,
- promise: ret,
- target: target,
- bindingPromise: maybePromise
- };
- target._then(INTERNAL, targetRejected, undefined, ret, context);
- maybePromise._then(
- bindingResolved, bindingRejected, undefined, ret, context);
- ret._setOnCancel(maybePromise);
- } else {
- ret._resolveCallback(target);
- }
- return ret;
- };
-
- Promise.prototype._setBoundTo = function (obj) {
- if (obj !== undefined) {
- this._bitField = this._bitField | 2097152;
- this._boundTo = obj;
- } else {
- this._bitField = this._bitField & (~2097152);
- }
- };
-
- Promise.prototype._isBound = function () {
- return (this._bitField & 2097152) === 2097152;
- };
-
- Promise.bind = function (thisArg, value) {
- return Promise.resolve(value).bind(thisArg);
- };
- };
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