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rOACCT/node_modules/clean-css/lib/optimizer/level-1/value-optimizers/whitespace.js
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whitespace.js
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			var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;

			var Marker = require('../../../tokenizer/marker');

			var CALC_DIVISION_WHITESPACE_PATTERN = /\) ?\/ ?/g;
			var COMMA_AND_SPACE_PATTERN = /, /g;
			var LINE_BREAK_PATTERN = /\r?\n/g;
			var MULTI_WHITESPACE_PATTERN = /\s+/g;
			var FUNCTION_CLOSING_BRACE_WHITESPACE_PATTERN = /\s+(;?\))/g;
			var FUNCTION_OPENING_BRACE_WHITESPACE_PATTERN = /(\(;?)\s+/g;
			var VARIABLE_NAME_PATTERN = /^--\S+$/;
			var VARIABLE_VALUE_PATTERN = /^var\(\s--\S+\s\)$/;

			var plugin = {
			level1: {
			value: function whitespace(name, value, options) {
			if (!options.level[OptimizationLevel.One].removeWhitespace) {
			return value;
			}

			if (VARIABLE_NAME_PATTERN.test(name) && !VARIABLE_VALUE_PATTERN.test(value)) {
			return value;
			}

			if ((value.indexOf(' ') == -1 && value.indexOf('\n') == -1) \|\| value.indexOf('expression') === 0) {
			return value;
			}

			if (value.indexOf(Marker.SINGLE_QUOTE) > -1 \|\| value.indexOf(Marker.DOUBLE_QUOTE) > -1) {
			return value;
			}

			value = value.replace(LINE_BREAK_PATTERN, '');
			value = value.replace(MULTI_WHITESPACE_PATTERN, ' ');

			if (value.indexOf('calc') > -1) {
			value = value.replace(CALC_DIVISION_WHITESPACE_PATTERN, ')/ ');
			}

			return value
			.replace(FUNCTION_OPENING_BRACE_WHITESPACE_PATTERN, '$1')
			.replace(FUNCTION_CLOSING_BRACE_WHITESPACE_PATTERN, '$1')
			.replace(COMMA_AND_SPACE_PATTERN, ',');
			}
			}
			};

			module.exports = plugin;