82f2b76e25
We now use webpack instead of SystemJS, effectively bundling modules into one file (plus commons chunks) for every entry point. This results in a much smaller extension size (almost half). Furthermore we use yarn/npm even for extension run-time dependencies. This relieves us from manually vendoring and building dependencies. It's also easier to understand for new developers familiar with node.
39 lines
1.6 KiB
JavaScript
39 lines
1.6 KiB
JavaScript
// 26.1.2 Reflect.construct(target, argumentsList [, newTarget])
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var $ = require('./$')
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, $export = require('./$.export')
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, aFunction = require('./$.a-function')
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, anObject = require('./$.an-object')
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, isObject = require('./$.is-object')
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, bind = Function.bind || require('./$.core').Function.prototype.bind;
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// MS Edge supports only 2 arguments
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// FF Nightly sets third argument as `new.target`, but does not create `this` from it
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$export($export.S + $export.F * require('./$.fails')(function(){
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function F(){}
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return !(Reflect.construct(function(){}, [], F) instanceof F);
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}), 'Reflect', {
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construct: function construct(Target, args /*, newTarget*/){
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aFunction(Target);
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anObject(args);
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var newTarget = arguments.length < 3 ? Target : aFunction(arguments[2]);
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if(Target == newTarget){
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// w/o altered newTarget, optimization for 0-4 arguments
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switch(args.length){
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case 0: return new Target;
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case 1: return new Target(args[0]);
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case 2: return new Target(args[0], args[1]);
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case 3: return new Target(args[0], args[1], args[2]);
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case 4: return new Target(args[0], args[1], args[2], args[3]);
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}
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// w/o altered newTarget, lot of arguments case
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var $args = [null];
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$args.push.apply($args, args);
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return new (bind.apply(Target, $args));
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}
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// with altered newTarget, not support built-in constructors
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var proto = newTarget.prototype
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, instance = $.create(isObject(proto) ? proto : Object.prototype)
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, result = Function.apply.call(Target, instance, args);
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return isObject(result) ? result : instance;
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}
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}); |