Method scanOperator

packages/compiler/src/expression_parser/lexer.ts:372–375

(start: number, str: string)

  }

  private scanOperator(start: number, str: string): Token {
    this.advance();
    return newOperatorToken(start, this.index, str);
  }

  private scanOpenBrace(start: number, code: number): Token {
    this.braceStack.push('expression');