* Duplicate cases
* Duplicate case values
* Invalid case values: value on a pure enum case, missing value on a
backed enum case, backing type / case type mismatch
* Literal expression evaluation for case values
Fixesvimeo/psalm#6426Fixesvimeo/psalm#6427
* Do not consider isset checks on static properties as redundant
Unlike normal properties, static properties do not have a prescribed
initialization sequence, so they can always be uninitialized (or unset).
Thus `isset()` checks on them are never redundant.
Fixesvimeo/psalm#5489
* Fix issue with nullable is_static
* Do not consider isset checks on static properties as redundant
Unlike normal properties, static properties do not have a prescribed
initialization sequence, so they can always be uninitialized (or unset).
Thus `isset()` checks on them are never redundant.
Fixesvimeo/psalm#5489
* Fix issue with nullable is_static
* Disable property invariance checks for templates
Property invariance checks were already disabled for template
properties, this also disabled the checks for arrays, lists,
class-string-maps, and iterables that contain templates.
Partially fixes#5371
* CS fixes
* Fix and simplify hasTemplate.
Add hasTemplate to TypeNode and simplify implementation with getChildNodes.
* Revert hasTemplate change and add containsTemplate.
* Check class-string too.
* Emit ImplicitToStringCast in more places
Fixesvimeo/psalm#5320
`to_string_cast` is set on successful comparison, thus it needs to
always bubble up (it will be ignored in UnionTypeComparator if some part
does not match).
* Fix implicit casts
* Fix handling of string method references in self-out context
* Implement NonInvariantChildProperty detection
See https://github.com/vimeo/psalm/issues/4184
* Delete test cases with 'parentSetsWiderTypeInConstructor'
As I understand it these are not valid test cases. They
emit NonInvariantPropertyType issues which seems correct - the property
type variation is I think a latent bug in the sample code.
* Reduce shortcode for NonInvariantPropertyType to 1+max used shortcode on master
