nl_tokens: Helper function that maps ArrayBufferViews to ArrayBuffers Used by BlobBuilder constructor and old browsers that didn t support it in the Blob constructor .
pl_tokens: function mapArrayBufferViews ( ary ) { return ary . map ( function ( chunk ) { if ( chunk . buffer instanceof ArrayBuffer ) { var buf = chunk . buffer ; // if this is a subarray, make a copy so we only // include the subarray region from the underlying buffer if ( chunk . byteLength !== buf . byteLength ) { var <mask> = new Uint8Array ( chunk . byteLength ) ; copy . set ( new Uint8Array ( buf , chunk . byteOffset , chunk . byteLength ) ) ; buf = copy . buffer ; } return buf ; } return chunk ; } ) ; }