diff options
Diffstat (limited to 'includes/external/school/node_modules/graphql/utilities/getOperationAST.js.flow')
-rw-r--r-- | includes/external/school/node_modules/graphql/utilities/getOperationAST.js.flow | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/includes/external/school/node_modules/graphql/utilities/getOperationAST.js.flow b/includes/external/school/node_modules/graphql/utilities/getOperationAST.js.flow new file mode 100644 index 0000000..eaee0b0 --- /dev/null +++ b/includes/external/school/node_modules/graphql/utilities/getOperationAST.js.flow @@ -0,0 +1,31 @@ +// @flow strict +import type { DocumentNode, OperationDefinitionNode } from '../language/ast'; +import { Kind } from '../language/kinds'; + +/** + * Returns an operation AST given a document AST and optionally an operation + * name. If a name is not provided, an operation is only returned if only one is + * provided in the document. + */ +export function getOperationAST( + documentAST: DocumentNode, + operationName?: ?string, +): ?OperationDefinitionNode { + let operation = null; + for (const definition of documentAST.definitions) { + if (definition.kind === Kind.OPERATION_DEFINITION) { + if (operationName == null) { + // If no operation name was provided, only return an Operation if there + // is one defined in the document. Upon encountering the second, return + // null. + if (operation) { + return null; + } + operation = definition; + } else if (definition.name?.value === operationName) { + return definition; + } + } + } + return operation; +} |