|  | @@ -468,7 +468,8 @@ function compose_js_files(configuration) {
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				|  |  |  	return new Promise(function(resolve, reject) {
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				|  |  |  		var programFile = configuration.program;
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				|  |  |  		if (undefined === programFile) {
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				|  |  | -			reject(configuration);
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				|  |  | +			resolve(configuration);
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				|  |  | +            return;
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				|  |  |  		}
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				|  |  |  		if (undefined !== configuration.output_dir) {
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				|  |  |  			programFile = path.join(configuration.output_dir, programFile);
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