44 lines
1.2 KiB
Plaintext
44 lines
1.2 KiB
Plaintext
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict
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*/
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import type { ASTValidationContext } from '../ValidationContext';
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import { GraphQLError } from '../../error/GraphQLError';
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import { Kind } from '../../language/kinds';
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import type { ASTVisitor } from '../../language/visitor';
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export function anonOperationNotAloneMessage(): string {
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return 'This anonymous operation must be the only defined operation.';
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}
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/**
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* Lone anonymous operation
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*
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* A GraphQL document is only valid if when it contains an anonymous operation
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* (the query short-hand) that it contains only that one operation definition.
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*/
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export function LoneAnonymousOperation(
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context: ASTValidationContext,
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): ASTVisitor {
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let operationCount = 0;
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return {
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Document(node) {
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operationCount = node.definitions.filter(
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definition => definition.kind === Kind.OPERATION_DEFINITION,
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).length;
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},
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OperationDefinition(node) {
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if (!node.name && operationCount > 1) {
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context.reportError(
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new GraphQLError(anonOperationNotAloneMessage(), [node]),
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);
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}
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},
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};
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}
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