How to use the babylon/lib/tokenizer/types.types.braceR function in babylon

return function parseImport() {
      var res = inner.apply(this, arguments);
      if (res.specifiers.length === 0) {
        let state = {tokens: this.state.tokens};
        barf(state, tt.semi);
        if (barf(state, tt.string) && !barf(state, tt._import)) {
          res.isEmptyImport = true;
        }
      }

      let state = {tokens: this.state.tokens}, fromToken;
      barf(state, tt.semi);
      if (barf(state, tt.string) &&
      ((fromToken = barf(state)), fromToken.type === tt.name && fromToken.value === 'from' ) &&
      barf(state, tt.braceR) && barf(state, tt.comma)) {
        res.hasTrailingComma = true;
      }
      return res;
    }
  });

return function parseImport() {
      var res = inner.apply(this, arguments);

      let state = {tokens: this.state.tokens};
      barf(state, tt.semi);
      if (barf(state, tt.braceR) && barf(state, tt.comma)) {
        res.hasTrailingComma = true;
      }
      return res;
    }
  });