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promise.js 6.1KB

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  1. (function(v,w){"object"===typeof exports&&"undefined"!==typeof module?module.exports=w():"function"===typeof define&&define.amd?define(w):v.ES6Promise=w()})(this,function(){function v(a){return"function"===typeof a}function w(){return function(){return process.nextTick(n)}}function R(){return"undefined"!==typeof B?function(){B(n)}:C()}function S(){var a=0,b=new J(n),c=document.createTextNode("");b.observe(c,{characterData:!0});return function(){c.data=a=++a%2}}function T(){var a=new MessageChannel;
  2. a.port1.onmessage=n;return function(){return a.port2.postMessage(0)}}function C(){var a=setTimeout;return function(){return a(n,1)}}function n(){for(var a=0;a<k;a+=2)(0,q[a])(q[a+1]),q[a]=void 0,q[a+1]=void 0;k=0}function U(){try{var a=Function("return this")().require("vertx");B=a.runOnLoop||a.runOnContext;return R()}catch(b){return C()}}function D(a,b){var c=this,d=new this.constructor(r);void 0===d[z]&&K(d);var e=c._state;if(e){var f=arguments[e-1];l(function(){return L(e,d,f,c._result)})}else E(c,
  3. d,a,b);return d}function F(a){if(a&&"object"===typeof a&&a.constructor===this)return a;var b=new this(r);x(b,a);return b}function r(){}function M(a){try{return a.then}catch(b){return p.error=b,p}}function V(a,b,c,d){try{a.call(b,c,d)}catch(e){return e}}function W(a,b,c){l(function(a){var e=!1,f=V(c,b,function(c){e||(e=!0,b!==c?x(a,c):m(a,c))},function(b){e||(e=!0,g(a,b))},"Settle: "+(a._label||" unknown promise"));!e&&f&&(e=!0,g(a,f))},a)}function X(a,b){b._state===y?m(a,b._result):b._state===t?g(a,
  4. b._result):E(b,void 0,function(b){return x(a,b)},function(b){return g(a,b)})}function N(a,b,c){b.constructor===a.constructor&&c===D&&b.constructor.resolve===F?X(a,b):c===p?(g(a,p.error),p.error=null):void 0===c?m(a,b):v(c)?W(a,b,c):m(a,b)}function x(a,b){if(a===b)g(a,new TypeError("You cannot resolve a promise with itself"));else{var c=typeof b;null===b||"object"!==c&&"function"!==c?m(a,b):N(a,b,M(b))}}function Y(a){a._onerror&&a._onerror(a._result);G(a)}function m(a,b){a._state===u&&(a._result=b,
  5. a._state=y,0!==a._subscribers.length&&l(G,a))}function g(a,b){a._state===u&&(a._state=t,a._result=b,l(Y,a))}function E(a,b,c,d){var e=a._subscribers,f=e.length;a._onerror=null;e[f]=b;e[f+y]=c;e[f+t]=d;0===f&&a._state&&l(G,a)}function G(a){var b=a._subscribers,c=a._state;if(0!==b.length){for(var d=void 0,e=void 0,f=a._result,g=0;g<b.length;g+=3)d=b[g],e=b[g+c],d?L(c,d,e,f):e(f);a._subscribers.length=0}}function L(a,b,c,d){var e=v(c),f=void 0,h=void 0,k=void 0,l=void 0;if(e){try{f=c(d)}catch(n){p.error=
  6. n,f=p}f===p?(l=!0,h=f.error,f.error=null):k=!0;if(b===f){g(b,new TypeError("A promises callback cannot return that same promise."));return}}else f=d,k=!0;b._state===u&&(e&&k?x(b,f):l?g(b,h):a===y?m(b,f):a===t&&g(b,f))}function Z(a,b){try{b(function(b){x(a,b)},function(b){g(a,b)})}catch(c){g(a,c)}}function K(a){a[z]=O++;a._state=void 0;a._result=void 0;a._subscribers=[]}var H=void 0,P=H=Array.isArray?Array.isArray:function(a){return"[object Array]"===Object.prototype.toString.call(a)},k=0,B=void 0,
  7. I=void 0,l=function(a,b){q[k]=a;q[k+1]=b;k+=2;2===k&&(I?I(n):Q())},A=(H="undefined"!==typeof window?window:void 0)||{},J=A.MutationObserver||A.WebKitMutationObserver,A="undefined"===typeof self&&"undefined"!==typeof process&&"[object process]"==={}.toString.call(process),aa="undefined"!==typeof Uint8ClampedArray&&"undefined"!==typeof importScripts&&"undefined"!==typeof MessageChannel,q=Array(1E3),Q=void 0,Q=A?w():J?S():aa?T():void 0===H&&"function"===typeof require?U():C(),z=Math.random().toString(36).substring(2),
  8. u=void 0,y=1,t=2,p={error:null},O=0,ba=function(){function a(a,c){this._instanceConstructor=a;this.promise=new a(r);this.promise[z]||K(this.promise);P(c)?(this._remaining=this.length=c.length,this._result=Array(this.length),0===this.length?m(this.promise,this._result):(this.length=this.length||0,this._enumerate(c),0===this._remaining&&m(this.promise,this._result))):g(this.promise,Error("Array Methods must be provided an Array"))}a.prototype._enumerate=function(a){for(var c=0;this._state===u&&c<a.length;c++)this._eachEntry(a[c],
  9. c)};a.prototype._eachEntry=function(a,c){var d=this._instanceConstructor,e=d.resolve;e===F?(e=M(a),e===D&&a._state!==u?this._settledAt(a._state,c,a._result):"function"!==typeof e?(this._remaining--,this._result[c]=a):d===h?(d=new d(r),N(d,a,e),this._willSettleAt(d,c)):this._willSettleAt(new d(function(c){return c(a)}),c)):this._willSettleAt(e(a),c)};a.prototype._settledAt=function(a,c,d){var e=this.promise;e._state===u&&(this._remaining--,a===t?g(e,d):this._result[c]=d);0===this._remaining&&m(e,this._result)};
  10. a.prototype._willSettleAt=function(a,c){var d=this;E(a,void 0,function(a){return d._settledAt(y,c,a)},function(a){return d._settledAt(t,c,a)})};return a}(),h=function(){function a(b){this[z]=O++;this._result=this._state=void 0;this._subscribers=[];if(r!==b){if("function"!==typeof b)throw new TypeError("You must pass a resolver function as the first argument to the promise constructor");if(this instanceof a)Z(this,b);else throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
  11. }}a.prototype["catch"]=function(a){return this.then(null,a)};a.prototype["finally"]=function(a){var c=this.constructor;return v(a)?this.then(function(d){return c.resolve(a()).then(function(){return d})},function(d){return c.resolve(a()).then(function(){throw d;})}):this.then(a,a)};return a}();h.prototype.then=D;h.all=function(a){return(new ba(this,a)).promise};h.race=function(a){var b=this;return P(a)?new b(function(c,d){for(var e=a.length,f=0;f<e;f++)b.resolve(a[f]).then(c,d)}):new b(function(a,
  12. b){return b(new TypeError("You must pass an array to race."))})};h.resolve=F;h.reject=function(a){var b=new this(r);g(b,a);return b};h._setScheduler=function(a){I=a};h._setAsap=function(a){l=a};h._asap=l;h.polyfill=function(){var a=void 0;if("undefined"!==typeof global)a=global;else if("undefined"!==typeof self)a=self;else try{a=Function("return this")()}catch(b){throw Error("polyfill failed because global object is unavailable in this environment");}var c=a.Promise;if(c){var d=null;try{d=Object.prototype.toString.call(c.resolve())}catch(e){}if("[object Promise]"===
  13. d&&!c.cast)return}a.Promise=h};return h.Promise=h});