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node_modules
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graphql
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Filename :
typeComparators.d.ts
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import type { GraphQLCompositeType, GraphQLType } from '../type/definition'; import type { GraphQLSchema } from '../type/schema'; /** * Provided two types, return true if the types are equal (invariant). */ export declare function isEqualType( typeA: GraphQLType, typeB: GraphQLType, ): boolean; /** * Provided a type and a super type, return true if the first type is either * equal or a subset of the second super type (covariant). */ export declare function isTypeSubTypeOf( schema: GraphQLSchema, maybeSubType: GraphQLType, superType: GraphQLType, ): boolean; /** * Provided two composite types, determine if they "overlap". Two composite * types overlap when the Sets of possible concrete types for each intersect. * * This is often used to determine if a fragment of a given type could possibly * be visited in a context of another type. * * This function is commutative. */ export declare function doTypesOverlap( schema: GraphQLSchema, typeA: GraphQLCompositeType, typeB: GraphQLCompositeType, ): boolean;