--- /dev/null
+/**
+ * @fileoverview Rule to check for ambiguous div operator in regexes
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+ meta: {
+ type: "suggestion",
+
+ docs: {
+ description: "disallow division operators explicitly at the beginning of regular expressions",
+ category: "Best Practices",
+ recommended: false,
+ url: "https://eslint.org/docs/rules/no-div-regex"
+ },
+
+ fixable: "code",
+
+ schema: [],
+
+ messages: {
+ unexpected: "A regular expression literal can be confused with '/='."
+ }
+ },
+
+ create(context) {
+ const sourceCode = context.getSourceCode();
+
+ return {
+
+ Literal(node) {
+ const token = sourceCode.getFirstToken(node);
+
+ if (token.type === "RegularExpression" && token.value[1] === "=") {
+ context.report({
+ node,
+ messageId: "unexpected",
+ fix(fixer) {
+ return fixer.replaceTextRange([token.range[0] + 1, token.range[0] + 2], "[=]");
+ }
+ });
+ }
+ }
+ };
+
+ }
+};