First version

CTOAsYouGo/node_modules/reduce-css-calc/dist/lib/stringifier.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+exports.default = function (calc, node, precision) {
+  var str = stringify(node, precision);
+
+  if (node.type === "MathExpression") {
+    // if calc expression couldn't be resolved to a single value, re-wrap it as
+    // a calc()
+    str = calc + "(" + str + ")";
+  }
+  return str;
+};
+
+var _reducer = require("./reducer");
+
+var order = {
+  "*": 0,
+  "/": 0,
+  "+": 1,
+  "-": 1
+};
+
+function round(value, prec) {
+  if (prec !== false) {
+    var precision = Math.pow(10, prec);
+    return Math.round(value * precision) / precision;
+  }
+  return value;
+}
+
+function stringify(node, prec) {
+  switch (node.type) {
+    case "MathExpression":
+      {
+        var left = node.left,
+            right = node.right,
+            op = node.operator;
+
+        var str = "";
+
+        if (left.type === 'MathExpression' && order[op] < order[left.operator]) str += "(" + stringify(left, prec) + ")";else str += stringify(left, prec);
+
+        str += " " + node.operator + " ";
+
+        if (right.type === 'MathExpression' && order[op] < order[right.operator]) {
+          str += "(" + stringify(right, prec) + ")";
+        } else if (right.type === 'MathExpression' && op === "-" && ["+", "-"].includes(right.operator)) {
+          // fix #52 : a-(b+c) = a-b-c
+          right.operator = (0, _reducer.flip)(right.operator);
+          str += stringify(right, prec);
+        } else {
+          str += stringify(right, prec);
+        }
+
+        return str;
+      }
+    case "Value":
+      return round(node.value, prec);
+    case 'CssVariable':
+      if (node.fallback) {
+        return "var(" + node.value + ", " + stringify(node.fallback, prec, true) + ")";
+      }
+      return "var(" + node.value + ")";
+    case 'Calc':
+      if (node.prefix) {
+        return "-" + node.prefix + "-calc(" + stringify(node.value, prec) + ")";
+      }
+      return "calc(" + stringify(node.value, prec) + ")";
+    default:
+      return round(node.value, prec) + node.unit;
+  }
+}
+
+module.exports = exports["default"];