Module infer 

Type inference, name validation, and default columns.

Upstream: getType and getObjectType (SchemaController.js:1555-1640), plus classNameIsValid and fieldNameIsValid (:446-480).

Inference is what makes Parse’s schema implicit: the first write that mentions a field decides its type forever. Everything downstream, including the error a client sees on the second write, follows from getting this exactly right.

Constants

DEFAULT_COLUMNS

The four columns every class has (defaultColumns._Default).

SYSTEM_CLASSES

Classes Parse defines itself.

USER_COLUMNS

The additional default columns of _User (defaultColumns._User).

Functions

class_name_is_valid

Is this a class a client may address?

field_name_is_valid

Field names a client may not use at all.

field_name_is_valid_for_class

Additionally refuses the default columns, which a client cannot redefine.

infer_type

Infer a field type from a value, as getType does.

schema_mismatch

The INCORRECT_TYPE a client sees when a write disagrees with the stored type.