Function is_statement

lib/ast.js:288–292

(node)

}, AST_Statement);

function is_statement(node) {
    return node instanceof AST_Statement
        && !(node instanceof AST_ClassExpression)
        && !(node instanceof AST_LambdaExpression);
}

function validate_expression(value, prop, multiple, allow_spread, allow_hole) {
    multiple = multiple ? "contain" : "be";