Function recover

packages/compiler/test/expression_parser/parser_spec.ts:1711–1714

(text: string, expected?: string)

  describe('error recovery', () => {
    function recover(text: string, expected?: string) {
      const expr = validate(parseAction(text));
      expect(unparse(expr)).toEqual(expected || text);
    }
    it('should be able to recover from an extra paren', () => recover('((a)))', '((a))'));
    it('should be able to recover from an extra bracket', () => recover('[[a]]]', '[[a]]'));
    it('should be able to recover from a missing )', () => recover('(a;b', '(a); b;'));