--- /dev/null
+"use strict";
+
+const report = require("../../utils/report");
+const ruleMessages = require("../../utils/ruleMessages");
+const validateOptions = require("../../utils/validateOptions");
+
+const ruleName = "no-empty-source";
+
+const messages = ruleMessages(ruleName, {
+ rejected: "Unexpected empty source"
+});
+
+const rule = function(actual) {
+ return (root, result) => {
+ const validOptions = validateOptions(result, ruleName, { actual });
+ if (!validOptions) {
+ return;
+ }
+
+ if (!/^\s*$/.test(root.source.input.css)) {
+ return;
+ }
+
+ report({
+ message: messages.rejected,
+ node: root,
+ result,
+ ruleName
+ });
+ };
+};
+
+rule.ruleName = ruleName;
+rule.messages = messages;
+module.exports = rule;