Method checkComma

parser/expression.go:1417–1421

(from, to file.Idx)

}

func (self *_parser) checkComma(from, to file.Idx) {
	if pos := strings.IndexByte(self.str[int(from)-self.base:int(to)-self.base], ','); pos >= 0 {
		self.error(from+file.Idx(pos), "Comma is not allowed here")
	}
}

func (self *_parser) reinterpretAsArrayAssignmentPattern(left *ast.ArrayLiteral) ast.Expression {
	value := left.Value