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avoid using global #14

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avoid using global #14

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13 changes: 7 additions & 6 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,11 @@
* Create a blob builder even when vendor prefixes exist
*/

var BlobBuilder = global.BlobBuilder
|| global.WebKitBlobBuilder
|| global.MSBlobBuilder
|| global.MozBlobBuilder;
var BlobBuilder = typeof BlobBuilder !== 'undefined' ? BlobBuilder :
typeof WebKitBlobBuilder !== 'undefined' ? WebKitBlobBuilder :
typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder :
typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder :
false;

/**
* Check if Blob constructor is supported
Expand Down Expand Up @@ -83,14 +84,14 @@ function BlobConstructor(ary, options) {
return new Blob(mapArrayBufferViews(ary), options || {});
};

if (global.Blob) {
if (typeof Blob !== 'undefined') {
BlobBuilderConstructor.prototype = Blob.prototype;
BlobConstructor.prototype = Blob.prototype;
}

module.exports = (function() {
if (blobSupported) {
return blobSupportsArrayBufferView ? global.Blob : BlobConstructor;
return blobSupportsArrayBufferView ? Blob : BlobConstructor;
} else if (blobBuilderSupported) {
return BlobBuilderConstructor;
} else {
Expand Down