# colon (deprecated)

x = { k: 123 }

==>
Program(VariableDeclaration(VariableDefinition,
                            Equals,
                            ObjectExpression(ObjectProperty(PropertyName,
                                                            Number))))

# equal

x = { k = 123 }

==>
Program(VariableDeclaration(VariableDefinition,
                            Equals,
                            ObjectExpression(ObjectProperty(PropertyName,
                                                            Equals,
                                                            Number))))