1 files changed, 51 insertions, 0 deletions
diff --git a/node_modules/reduce-css-calc/dist/index.js b/node_modules/reduce-css-calc/dist/index.js
new file mode 100644
index 00000000..0a69bf38
--- /dev/null
+++ b/node_modules/reduce-css-calc/dist/index.js
@@ -0,0 +1,51 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _postcssValueParser = require('postcss-value-parser');
+
+var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);
+
+var _parser = require('./parser');
+
+var _reducer = require('./lib/reducer');
+
+var _reducer2 = _interopRequireDefault(_reducer);
+
+var _stringifier = require('./lib/stringifier');
+
+var _stringifier2 = _interopRequireDefault(_stringifier);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+// eslint-disable-line
+var MATCH_CALC = /((?:\-[a-z]+\-)?calc)/;
+
+exports.default = function (value) {
+  var precision = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 5;
+
+  return (0, _postcssValueParser2.default)(value).walk(function (node) {
+    // skip anything which isn't a calc() function
+    if (node.type !== 'function' || !MATCH_CALC.test(node.value)) return;
+
+    // stringify calc expression and produce an AST
+    var contents = _postcssValueParser2.default.stringify(node.nodes);
+
+    // skip constant() and env()
+    if (contents.indexOf('constant') >= 0 || contents.indexOf('env') >= 0) return;
+
+    var ast = _parser.parser.parse(contents);
+
+    // reduce AST to its simplest form, that is, either to a single value
+    // or a simplified calc expression
+    var reducedAst = (0, _reducer2.default)(ast, precision);
+
+    // stringify AST and write it back
+    node.type = 'word';
+    node.value = (0, _stringifier2.default)(node.value, reducedAst, precision);
+  }, true).toString();
+};
+
+module.exports = exports['default'];
+\ No newline at end of file