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import { GraphQLError } from '../error/GraphQLError.d.ts';import { DocumentNode } from '../language/ast.d.ts';import { GraphQLSchema } from '../type/schema.d.ts';
/** * A validation rule which reports deprecated usages. * * Returns a list of GraphQLError instances describing each deprecated use. */export function findDeprecatedUsages(  schema: GraphQLSchema,  ast: DocumentNode,): Array<GraphQLError>;