fix: added parseError isNested argument (#54)

* fix: added parseError isNested argument

* Add changeset

Author: acemir

.changeset/loud-gorillas-poke.md

@@ -0,0 +1,5 @@
+---
+"@acemir/cssom": patch
+---
+
+fix: added parseError isNested argument

lib/CSSStyleSheet.js

@@ -163,7 +163,7 @@ CSSOM.CSSStyleSheet.prototype.insertRule = function(rule, index) {
 				'HierarchyRequestError');
 		}
 
-		if (parseErrors.length !== 0) {
+		if (parseErrors.filter(function(error) { return !error.isNested; }).length !== 0) {
 			errorUtils.throwParseError(this, 'insertRule', this.constructor.name, ruleToParse, 'SyntaxError');
 		}
 	}

lib/parse.js

@@ -880,7 +880,7 @@ CSSOM.parse = function parse(token, opts, errorHandler) {
 		return true;
 	}
 
-	function parseError(message) {
+	function parseError(message, isNested) {
 		var lines = token.substring(0, i).split('\n');
 		var lineCount = lines.length;
 		var charCount = lines.pop().length + 1;
@@ -889,6 +889,7 @@ CSSOM.parse = function parse(token, opts, errorHandler) {
 		/* jshint sub : true */
 		error['char'] = charCount;
 		error.styleSheet = styleSheet;
+		error.isNested = !!isNested;
 		// Print the error but continue parsing the sheet
 		try {
 			throw error;
@@ -1535,7 +1536,7 @@ CSSOM.parse = function parse(token, opts, errorHandler) {
 						if (styleRule === nestedSelectorRule) {
 							nestedSelectorRule = null;
 						}
-						parseError('Invalid CSSStyleRule (selectorText = "' + styleRule.selectorText + '")');
+						parseError('Invalid CSSStyleRule (selectorText = "' + styleRule.selectorText + '")', styleRule.parentRule !== null);
 					} else {
 						currentScope.cssRules.push(styleRule);
 					}