github-pages-deploy-action/node_modules/graphql/validation/rules/LoneAnonymousOperationRule.js.flow
2020-03-06 22:45:40 -05:00

38 lines
1009 B
Plaintext

// @flow strict
import { GraphQLError } from '../../error/GraphQLError';
import { Kind } from '../../language/kinds';
import { type ASTVisitor } from '../../language/visitor';
import { type ASTValidationContext } from '../ValidationContext';
/**
* Lone anonymous operation
*
* A GraphQL document is only valid if when it contains an anonymous operation
* (the query short-hand) that it contains only that one operation definition.
*/
export function LoneAnonymousOperationRule(
context: ASTValidationContext,
): ASTVisitor {
let operationCount = 0;
return {
Document(node) {
operationCount = node.definitions.filter(
definition => definition.kind === Kind.OPERATION_DEFINITION,
).length;
},
OperationDefinition(node) {
if (!node.name && operationCount > 1) {
context.reportError(
new GraphQLError(
'This anonymous operation must be the only defined operation.',
node,
),
);
}
},
};
}