refactor: replace interface{} with any (Go 1.18+)

docs/ex/value-groups/consume/param.go

@@ -23,7 +23,7 @@ package consume
 import "go.uber.org/fx"
 
 // Watcher watches for events.
-type Watcher interface{}
+type Watcher any
 
 // ParamsModule is the module defined in this file.
 var ParamsModule = fx.Options(

docs/ex/value-groups/feed/result.go

@@ -30,7 +30,7 @@ var ResultModule = fx.Options(
 )
 
 // Watcher watches for events.
-type Watcher interface{}
+type Watcher any
 
 type watcher struct{}
 

docs/src/container.md

@@ -82,7 +82,7 @@ it can only be used for non-interface values.
     on runtime reflection to determine the type of the value.
 
     Passing an interface value to `fx.Supply` is a lossy operation:
-    it loses the original interface type, only giving us `interface{}`,
+    it loses the original interface type, only giving us `any`,
     at which point reflection will only reveal the concrete type of the value.
 
     For example, consider:

tools/analysis/passes/allfxevents/analysis.go

@@ -58,7 +58,7 @@ var _filter = []ast.Node{
 	&ast.TypeAssertExpr{},
 }
 
-func run(pass *analysis.Pass) (interface{}, error) {
+func run(pass *analysis.Pass) (any, error) {
 	fxeventPkg, ok := findPackage(pass.Pkg, "go.uber.org/fx/fxevent")
 	if !ok {
 		// If the package doesn't import fxevent, and itself isn't
@@ -261,7 +261,7 @@ func (ts *typeSet) Remove(t types.Type) (found bool) {
 
 // Iterate iterates through the type set in an unspecified order.
 func (ts *typeSet) Iterate(f func(types.Type)) {
-	ts.m.Iterate(func(t types.Type, _ interface{}) {
+	ts.m.Iterate(func(t types.Type, _ any) {
 		f(t)
 	})
 }