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isValidLiteralValue.js
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isValidLiteralValue.js
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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import { TypeInfo } from './TypeInfo';
import type { GraphQLError } from '../error/GraphQLError';
import type { ValueNode } from '../language/ast';
import { Kind } from '../language/kinds';
import { visit, visitWithTypeInfo } from '../language/visitor';
import type { GraphQLInputType } from '../type/definition';
import { GraphQLSchema } from '../type/schema';
import { ValuesOfCorrectType } from '../validation/rules/ValuesOfCorrectType';
import { ValidationContext } from '../validation/validate';
/**
* Utility which determines if a value literal node is valid for an input type.
*
* Deprecated. Rely on validation for documents containing literal values.
*/
export function isValidLiteralValue(
type: GraphQLInputType,
valueNode: ValueNode,
): $ReadOnlyArray<GraphQLError> {
const emptySchema = new GraphQLSchema({});
const emptyDoc = { kind: Kind.DOCUMENT, definitions: [] };
const typeInfo = new TypeInfo(emptySchema, undefined, type);
const context = new ValidationContext(emptySchema, emptyDoc, typeInfo);
const visitor = ValuesOfCorrectType(context);
visit(valueNode, visitWithTypeInfo(typeInfo, visitor));
return context.getErrors();
}