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node_modules/graphql/validation/validate.d.ts

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+import { GraphQLError } from '../error/GraphQLError';
+import { DocumentNode } from '../language/ast';
+import { GraphQLSchema } from '../type/schema';
+import { TypeInfo } from '../utilities/TypeInfo';
+import { ValidationRule, SDLValidationRule } from './ValidationContext';
+import Maybe from '../tsutils/Maybe';
+
+/**
+ * Implements the "Validation" section of the spec.
+ *
+ * Validation runs synchronously, returning an array of encountered errors, or
+ * an empty array if no errors were encountered and the document is valid.
+ *
+ * A list of specific validation rules may be provided. If not provided, the
+ * default list of rules defined by the GraphQL specification will be used.
+ *
+ * Each validation rules is a function which returns a visitor
+ * (see the language/visitor API). Visitor methods are expected to return
+ * GraphQLErrors, or Arrays of GraphQLErrors when invalid.
+ *
+ * Optionally a custom TypeInfo instance may be provided. If not provided, one
+ * will be created from the provided schema.
+ */
+export function validate(
+  schema: GraphQLSchema,
+  documentAST: DocumentNode,
+  rules?: ReadonlyArray<ValidationRule>,
+  typeInfo?: TypeInfo,
+  options?: { maxErrors?: number },
+): ReadonlyArray<GraphQLError>;
+
+// @internal
+export function validateSDL(
+  documentAST: DocumentNode,
+  schemaToExtend?: Maybe<GraphQLSchema>,
+  rules?: ReadonlyArray<SDLValidationRule>,
+): GraphQLError[];
+
+/**
+ * Utility function which asserts a SDL document is valid by throwing an error
+ * if it is invalid.
+ *
+ * @internal
+ */
+export function assertValidSDL(documentAST: DocumentNode): undefined;
+
+/**
+ * Utility function which asserts a SDL document is valid by throwing an error
+ * if it is invalid.
+ *
+ * @internal
+ */
+export function assertValidSDLExtension(
+  documentAST: DocumentNode,
+  schema: GraphQLSchema,
+): undefined;