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					20 lines
				
				329 B
			
		
		
			
		
	
	
					20 lines
				
				329 B
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											4 years ago
										 
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								//      
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								'use strict';
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								function cacheWrapper   (cache                 , key        , fn         )    {
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								  if (!cache) {
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								    return fn();
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								  }
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								  const cached = cache.get(key);
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								  if (cached !== undefined) {
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								    return cached;
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								  }
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								  const result = fn();
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								  cache.set(key, result);
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								  return result;
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								}
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								module.exports = cacheWrapper;
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