enable only in bleeding edge

Author: staabm

conf/bleedingEdge.neon

@@ -55,5 +55,6 @@ parameters:
 		pure: true
 		checkParameterCastableToStringFunctions: true
 		narrowPregMatches: true
+		uselessReturnValue: true
 	stubFiles:
 		- ../stubs/bleedingEdge/Rule.stub

conf/config.level0.neon

@@ -24,6 +24,8 @@ conditionalTags:
 		phpstan.rules.rule: %featureToggles.missingMagicSerializationRule%
 	PHPStan\Rules\Constants\MagicConstantContextRule:
 		phpstan.rules.rule: %featureToggles.magicConstantOutOfContext%
+	PHPStan\Rules\Functions\UselessFunctionReturnValueRule:
+		phpstan.rules.rule: %featureToggles.uselessReturnValue%
 
 rules:
 	- PHPStan\Rules\Api\ApiInstantiationRule
@@ -70,7 +72,6 @@ rules:
 	- PHPStan\Rules\Functions\DefineParametersRule
 	- PHPStan\Rules\Functions\ExistingClassesInArrowFunctionTypehintsRule
 	- PHPStan\Rules\Functions\CallToFunctionParametersRule
-	- PHPStan\Rules\Functions\UselessFunctionReturnValueRule
 	- PHPStan\Rules\Functions\ExistingClassesInClosureTypehintsRule
 	- PHPStan\Rules\Functions\ExistingClassesInTypehintsRule
 	- PHPStan\Rules\Functions\FunctionAttributesRule
@@ -294,3 +295,6 @@ services:
 
 	-
 		class: PHPStan\Rules\Constants\MagicConstantContextRule
+
+	-
+		class: PHPStan\Rules\Functions\UselessFunctionReturnValueRule

conf/config.neon

@@ -90,6 +90,7 @@ parameters:
 		pure: false
 		checkParameterCastableToStringFunctions: false
 		narrowPregMatches: false
+		uselessReturnValue: false
 	fileExtensions:
 		- php
 	checkAdvancedIsset: false

conf/parametersSchema.neon

@@ -85,6 +85,7 @@ parametersSchema:
 		pure: bool()
 		checkParameterCastableToStringFunctions: bool()
 		narrowPregMatches: bool()
+		uselessReturnValue: bool()
 	])
 	fileExtensions: listOf(string())
 	checkAdvancedIsset: bool()