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package validator
import (
"github.com/vektah/gqlparser/v2/ast"
//nolint:revive // Validator rules each use dot imports for convenience.
. "github.com/vektah/gqlparser/v2/validator"
)
func init() {
AddRule("NoUnusedFragments", func(observers *Events, addError AddErrFunc) {
inFragmentDefinition := false
fragmentNameUsed := make(map[string]bool)
observers.OnFragmentSpread(func(walker *Walker, fragmentSpread *ast.FragmentSpread) {
if !inFragmentDefinition {
fragmentNameUsed[fragmentSpread.Name] = true
}
})
observers.OnFragment(func(walker *Walker, fragment *ast.FragmentDefinition) {
inFragmentDefinition = true
if !fragmentNameUsed[fragment.Name] {
addError(
Message(`Fragment "%s" is never used.`, fragment.Name),
At(fragment.Position),
)
}
})
})
}
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