fix(eslint-plugin): [prefer-regexp-exec] skip malformed regexes (#6935)

Skip malformed regular expressions

Author: yassin-kammoun-sonarsource

packages/eslint-plugin/src/rules/prefer-regexp-exec.ts

@@ -125,7 +125,12 @@ export default createRule({
  argumentNode.type === AST_NODE_TYPES.Literal &&
  typeof argumentNode.value === 'string'
  ) {
- const regExp = RegExp(argumentNode.value);
+ let regExp: RegExp;
+ try {
+ regExp = RegExp(argumentNode.value);
+ } catch {
+ return;
+ }
  return context.report({
  node: memberNode.property,
  messageId: 'regExpExecOverStringMatch',

packages/eslint-plugin/tests/rules/prefer-regexp-exec.test.ts

@@ -74,6 +74,12 @@ const matchCount = (str: string, re: RegExp) => {
  return (str.match(re) || []).length;
 };
  `,
+ // https://github.com/typescript-eslint/typescript-eslint/issues/6928
+ `
+function test(str: string) {
+ str.match('[a-z');
+}
+ `,
  ],
  invalid: [
  {