Update parseNumber()

Author: asamuzaK

lib/parsers.js

@@ -138,6 +138,10 @@ exports.parseNumber = function parseNumber(val) {
       return val;
     case exports.TYPES.NUMBER:
       return `${parseFloat(val)}`;
+    case exports.TYPES.CALC:
+      return cssCalc(val, {
+        format: 'specifiedValue',
+      });
     default:
       return undefined;
   }

package-lock.json

@@ -37,7 +37,7 @@
   ],
   "main": "./lib/CSSStyleDeclaration.js",
   "dependencies": {
-    "@asamuzakjp/css-color": "^3.1.4",
+    "@asamuzakjp/css-color": "^3.1.5",
     "rrweb-cssom": "^0.8.0"
   },
   "devDependencies": {

package.json

@@ -328,6 +328,13 @@ describe('parseNumber', () => {
 
     assert.strictEqual(output, '0.5');
   });
+
+  it('should return calculated value', () => {
+    let input = 'calc(2 / 3)';
+    let output = parsers.parseLength(input);
+
+    assert.strictEqual(output, 'calc(0.666667)');
+  });
 });
 
 describe('parseLength', () => {