15 lines
		
	
	
		
			369 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
		
		
			
		
	
	
			15 lines
		
	
	
		
			369 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
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								module.exports = function() {
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								  return {
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								    name: 'trimBlankLines',
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								    process: function(str) {
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								      var lines = str.split(/\r?\n/);
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								      while (lines.length && (lines[0].trim() === '')) {
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								        lines.shift();
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								      }
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								      while (lines.length && (lines[lines.length - 1].trim() === '')) {
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								        lines.pop();
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								      }
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								      return lines.join('\n');
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								    }
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								  };
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								};
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