1724 lines
73 KiB
JavaScript
1724 lines
73 KiB
JavaScript
import { cloneSchema, serializeInputValue, updateArgument, collectFields, relocatedError, mergeDeep, getResponseKeyFromInfo, implementsAbstractType, mapAsyncIterator } from '@graphql-tools/utils';
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import { Kind, typeFromAST, GraphQLError, responsePathAsArray, getNamedType, getNullableType, isLeafType, isCompositeType, isListType, isAbstractType, locatedError, defaultFieldResolver, TypeInfo, visit, visitWithTypeInfo, print, isInterfaceType, isObjectType, TypeNameMetaFieldDef, getOperationAST, subscribe, validate, execute } from 'graphql';
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import AggregateError from '@ardatan/aggregate-error';
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import isPromise from 'is-promise';
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import { getBatchingExecutor } from '@graphql-tools/batch-execute';
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function applySchemaTransforms(originalWrappingSchema, subschemaConfig, transformedSchema) {
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const schemaTransforms = subschemaConfig.transforms;
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if (schemaTransforms == null) {
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return originalWrappingSchema;
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}
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return schemaTransforms.reduce((schema, transform) => transform.transformSchema != null
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? transform.transformSchema(cloneSchema(schema), subschemaConfig, transformedSchema)
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: schema, originalWrappingSchema);
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}
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function isSubschema(value) {
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return Boolean(value.transformedSchema);
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}
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class Subschema {
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constructor(config) {
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var _a;
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this.schema = config.schema;
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this.rootValue = config.rootValue;
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this.executor = config.executor;
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this.subscriber = config.subscriber;
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this.batch = config.batch;
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this.batchingOptions = config.batchingOptions;
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this.createProxyingResolver = config.createProxyingResolver;
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this.transforms = (_a = config.transforms) !== null && _a !== void 0 ? _a : [];
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this.transformedSchema = applySchemaTransforms(this.schema, config);
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this.merge = config.merge;
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}
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}
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function getDelegatingOperation(parentType, schema) {
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if (parentType === schema.getMutationType()) {
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return 'mutation';
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}
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else if (parentType === schema.getSubscriptionType()) {
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return 'subscription';
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}
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return 'query';
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}
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function createRequestFromInfo({ info, operationName, operation = getDelegatingOperation(info.parentType, info.schema), fieldName = info.fieldName, selectionSet, fieldNodes = info.fieldNodes, }) {
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return createRequest({
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sourceSchema: info.schema,
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sourceParentType: info.parentType,
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sourceFieldName: info.fieldName,
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fragments: info.fragments,
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variableDefinitions: info.operation.variableDefinitions,
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variableValues: info.variableValues,
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targetOperationName: operationName,
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targetOperation: operation,
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targetFieldName: fieldName,
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selectionSet,
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fieldNodes,
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});
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}
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function createRequest({ sourceSchema, sourceParentType, sourceFieldName, fragments, variableDefinitions, variableValues, targetOperationName, targetOperation, targetFieldName, selectionSet, fieldNodes, }) {
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var _a;
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let newSelectionSet;
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let argumentNodeMap;
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if (selectionSet != null) {
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newSelectionSet = selectionSet;
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argumentNodeMap = Object.create(null);
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}
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else {
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const selections = fieldNodes.reduce((acc, fieldNode) => (fieldNode.selectionSet != null ? acc.concat(fieldNode.selectionSet.selections) : acc), []);
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newSelectionSet = selections.length
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? {
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kind: Kind.SELECTION_SET,
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selections,
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}
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: undefined;
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argumentNodeMap = {};
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const args = (_a = fieldNodes[0]) === null || _a === void 0 ? void 0 : _a.arguments;
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if (args) {
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argumentNodeMap = args.reduce((prev, curr) => ({
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...prev,
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[curr.name.value]: curr,
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}), argumentNodeMap);
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}
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}
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const newVariables = Object.create(null);
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const variableDefinitionMap = Object.create(null);
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if (sourceSchema != null && variableDefinitions != null) {
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variableDefinitions.forEach(def => {
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const varName = def.variable.name.value;
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variableDefinitionMap[varName] = def;
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const varType = typeFromAST(sourceSchema, def.type);
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const serializedValue = serializeInputValue(varType, variableValues[varName]);
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if (serializedValue !== undefined) {
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newVariables[varName] = serializedValue;
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}
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});
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}
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if (sourceParentType != null) {
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updateArgumentsWithDefaults(sourceParentType, sourceFieldName, argumentNodeMap, variableDefinitionMap, newVariables);
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}
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const rootfieldNode = {
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kind: Kind.FIELD,
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arguments: Object.keys(argumentNodeMap).map(argName => argumentNodeMap[argName]),
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name: {
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kind: Kind.NAME,
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value: targetFieldName || fieldNodes[0].name.value,
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},
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selectionSet: newSelectionSet,
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};
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const operationName = targetOperationName
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? {
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kind: Kind.NAME,
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value: targetOperationName,
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}
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: undefined;
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const operationDefinition = {
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kind: Kind.OPERATION_DEFINITION,
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name: operationName,
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operation: targetOperation,
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variableDefinitions: Object.keys(variableDefinitionMap).map(varName => variableDefinitionMap[varName]),
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selectionSet: {
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kind: Kind.SELECTION_SET,
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selections: [rootfieldNode],
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},
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};
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let definitions = [operationDefinition];
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if (fragments != null) {
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definitions = definitions.concat(Object.keys(fragments).map(fragmentName => fragments[fragmentName]));
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}
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const document = {
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kind: Kind.DOCUMENT,
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definitions,
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};
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return {
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document,
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variables: newVariables,
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};
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}
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function updateArgumentsWithDefaults(sourceParentType, sourceFieldName, argumentNodeMap, variableDefinitionMap, variableValues) {
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const sourceField = sourceParentType.getFields()[sourceFieldName];
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sourceField.args.forEach((argument) => {
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const argName = argument.name;
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const sourceArgType = argument.type;
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if (argumentNodeMap[argName] === undefined) {
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const defaultValue = argument.defaultValue;
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if (defaultValue !== undefined) {
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updateArgument(argName, sourceArgType, argumentNodeMap, variableDefinitionMap, variableValues, serializeInputValue(sourceArgType, defaultValue));
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}
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}
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});
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}
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const UNPATHED_ERRORS_SYMBOL = Symbol('subschemaErrors');
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const OBJECT_SUBSCHEMA_SYMBOL = Symbol('initialSubschema');
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const FIELD_SUBSCHEMA_MAP_SYMBOL = Symbol('subschemaMap');
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function isExternalObject(data) {
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return data[UNPATHED_ERRORS_SYMBOL] !== undefined;
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}
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function annotateExternalObject(object, errors, subschema) {
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Object.defineProperties(object, {
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[OBJECT_SUBSCHEMA_SYMBOL]: { value: subschema },
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[FIELD_SUBSCHEMA_MAP_SYMBOL]: { value: Object.create(null) },
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[UNPATHED_ERRORS_SYMBOL]: { value: errors },
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});
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return object;
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}
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function getSubschema(object, responseKey) {
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var _a;
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return (_a = object[FIELD_SUBSCHEMA_MAP_SYMBOL][responseKey]) !== null && _a !== void 0 ? _a : object[OBJECT_SUBSCHEMA_SYMBOL];
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}
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function getUnpathedErrors(object) {
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return object[UNPATHED_ERRORS_SYMBOL];
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}
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function mergeExternalObjects(schema, path, typeName, target, sources, selectionSets) {
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var _a;
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const results = [];
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let errors = [];
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sources.forEach((source, index) => {
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if (source instanceof GraphQLError || source === null) {
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const selectionSet = selectionSets[index];
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const fieldNodes = collectFields({
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schema,
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variableValues: {},
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fragments: {},
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}, schema.getType(typeName), selectionSet, Object.create(null), Object.create(null));
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const nullResult = {};
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Object.keys(fieldNodes).forEach(responseKey => {
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nullResult[responseKey] =
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source instanceof GraphQLError ? relocatedError(source, path.concat([responseKey])) : null;
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});
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results.push(nullResult);
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}
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else {
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errors = errors.concat(source[UNPATHED_ERRORS_SYMBOL]);
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results.push(source);
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}
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});
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const combinedResult = results.reduce(mergeDeep, target);
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const newFieldSubschemaMap = (_a = target[FIELD_SUBSCHEMA_MAP_SYMBOL]) !== null && _a !== void 0 ? _a : Object.create(null);
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results.forEach((source) => {
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const objectSubschema = source[OBJECT_SUBSCHEMA_SYMBOL];
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const fieldSubschemaMap = source[FIELD_SUBSCHEMA_MAP_SYMBOL];
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if (fieldSubschemaMap === undefined) {
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Object.keys(source).forEach(responseKey => {
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newFieldSubschemaMap[responseKey] = objectSubschema;
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});
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}
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else {
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Object.keys(source).forEach(responseKey => {
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var _a;
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newFieldSubschemaMap[responseKey] = (_a = fieldSubschemaMap[responseKey]) !== null && _a !== void 0 ? _a : objectSubschema;
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});
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}
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});
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combinedResult[FIELD_SUBSCHEMA_MAP_SYMBOL] = newFieldSubschemaMap;
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combinedResult[OBJECT_SUBSCHEMA_SYMBOL] = target[OBJECT_SUBSCHEMA_SYMBOL];
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combinedResult[UNPATHED_ERRORS_SYMBOL] = target[UNPATHED_ERRORS_SYMBOL].concat(errors);
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return combinedResult;
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}
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function isSubschemaConfig(value) {
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return Boolean(value === null || value === void 0 ? void 0 : value.schema);
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}
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function cloneSubschemaConfig(subschemaConfig) {
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const newSubschemaConfig = {
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...subschemaConfig,
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transforms: subschemaConfig.transforms != null ? [...subschemaConfig.transforms] : undefined,
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};
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if (newSubschemaConfig.merge != null) {
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newSubschemaConfig.merge = { ...subschemaConfig.merge };
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Object.keys(newSubschemaConfig.merge).forEach(typeName => {
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newSubschemaConfig.merge[typeName] = { ...subschemaConfig.merge[typeName] };
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const fields = newSubschemaConfig.merge[typeName].fields;
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if (fields != null) {
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Object.keys(fields).forEach(fieldName => {
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fields[fieldName] = { ...fields[fieldName] };
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});
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}
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});
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}
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return newSubschemaConfig;
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}
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function memoizeInfoAnd2Objects(fn) {
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let cache1;
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function memoized(a1, a2, a3) {
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if (!cache1) {
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cache1 = new WeakMap();
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const cache2 = new WeakMap();
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cache1.set(a1.fieldNodes, cache2);
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const cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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let cache2 = cache1.get(a1.fieldNodes);
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if (!cache2) {
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cache2 = new WeakMap();
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cache1.set(a1.fieldNodes, cache2);
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const cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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let cache3 = cache2.get(a2);
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if (!cache3) {
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cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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const cachedValue = cache3.get(a3);
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if (cachedValue === undefined) {
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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return cachedValue;
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}
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return memoized;
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}
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function memoize4(fn) {
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let cache1;
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function memoized(a1, a2, a3, a4) {
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if (!cache1) {
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cache1 = new WeakMap();
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const cache2 = new WeakMap();
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cache1.set(a1, cache2);
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const cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const cache4 = new WeakMap();
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cache3.set(a3, cache4);
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const newValue = fn(a1, a2, a3, a4);
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cache4.set(a4, newValue);
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return newValue;
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}
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let cache2 = cache1.get(a1);
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if (!cache2) {
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cache2 = new WeakMap();
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cache1.set(a1, cache2);
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const cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const cache4 = new WeakMap();
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cache3.set(a3, cache4);
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const newValue = fn(a1, a2, a3, a4);
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cache4.set(a4, newValue);
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return newValue;
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}
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let cache3 = cache2.get(a2);
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if (!cache3) {
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cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const cache4 = new WeakMap();
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cache3.set(a3, cache4);
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const newValue = fn(a1, a2, a3, a4);
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cache4.set(a4, newValue);
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return newValue;
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}
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const cache4 = cache3.get(a3);
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if (!cache4) {
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const cache4 = new WeakMap();
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cache3.set(a3, cache4);
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const newValue = fn(a1, a2, a3, a4);
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cache4.set(a4, newValue);
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return newValue;
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}
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const cachedValue = cache4.get(a4);
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if (cachedValue === undefined) {
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const newValue = fn(a1, a2, a3, a4);
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cache4.set(a4, newValue);
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return newValue;
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}
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return cachedValue;
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}
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return memoized;
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}
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function memoize3(fn) {
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let cache1;
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function memoized(a1, a2, a3) {
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if (!cache1) {
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cache1 = new WeakMap();
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const cache2 = new WeakMap();
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cache1.set(a1, cache2);
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const cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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let cache2 = cache1.get(a1);
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if (!cache2) {
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cache2 = new WeakMap();
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cache1.set(a1, cache2);
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const cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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let cache3 = cache2.get(a2);
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if (!cache3) {
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cache3 = new WeakMap();
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cache2.set(a2, cache3);
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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const cachedValue = cache3.get(a3);
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if (cachedValue === undefined) {
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const newValue = fn(a1, a2, a3);
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cache3.set(a3, newValue);
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return newValue;
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}
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return cachedValue;
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}
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return memoized;
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}
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function memoize2(fn) {
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let cache1;
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function memoized(a1, a2) {
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if (!cache1) {
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cache1 = new WeakMap();
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const cache2 = new WeakMap();
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cache1.set(a1, cache2);
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const newValue = fn(a1, a2);
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cache2.set(a2, newValue);
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return newValue;
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}
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let cache2 = cache1.get(a1);
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if (!cache2) {
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cache2 = new WeakMap();
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cache1.set(a1, cache2);
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const newValue = fn(a1, a2);
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cache2.set(a2, newValue);
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return newValue;
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}
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const cachedValue = cache2.get(a2);
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if (cachedValue === undefined) {
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const newValue = fn(a1, a2);
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cache2.set(a2, newValue);
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return newValue;
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}
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return cachedValue;
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}
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return memoized;
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}
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function collectSubFields(info, typeName) {
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let subFieldNodes = Object.create(null);
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const visitedFragmentNames = Object.create(null);
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const type = info.schema.getType(typeName);
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const partialExecutionContext = {
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schema: info.schema,
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variableValues: info.variableValues,
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fragments: info.fragments,
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};
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info.fieldNodes.forEach(fieldNode => {
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subFieldNodes = collectFields(partialExecutionContext, type, fieldNode.selectionSet, subFieldNodes, visitedFragmentNames);
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});
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const stitchingInfo = info.schema.extensions.stitchingInfo;
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const selectionSetsByField = stitchingInfo.selectionSetsByField;
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Object.keys(subFieldNodes).forEach(responseName => {
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var _a;
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const fieldName = subFieldNodes[responseName][0].name.value;
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const fieldSelectionSet = (_a = selectionSetsByField === null || selectionSetsByField === void 0 ? void 0 : selectionSetsByField[typeName]) === null || _a === void 0 ? void 0 : _a[fieldName];
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if (fieldSelectionSet != null) {
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subFieldNodes = collectFields(partialExecutionContext, type, fieldSelectionSet, subFieldNodes, visitedFragmentNames);
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}
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});
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return subFieldNodes;
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}
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const getFieldsNotInSubschema = memoizeInfoAnd2Objects(function (info, subschema, mergedTypeInfo) {
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const typeMap = isSubschemaConfig(subschema) ? mergedTypeInfo.typeMaps.get(subschema) : subschema.getTypeMap();
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const typeName = mergedTypeInfo.typeName;
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const fields = typeMap[typeName].getFields();
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const subFieldNodes = collectSubFields(info, typeName);
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let fieldsNotInSchema = [];
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Object.keys(subFieldNodes).forEach(responseName => {
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const fieldName = subFieldNodes[responseName][0].name.value;
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if (!(fieldName in fields)) {
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fieldsNotInSchema = fieldsNotInSchema.concat(subFieldNodes[responseName]);
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}
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});
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return fieldsNotInSchema;
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});
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|
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const sortSubschemasByProxiability = memoize4(function (mergedTypeInfo, sourceSubschemaOrSourceSubschemas, targetSubschemas, fieldNodes) {
|
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// 1. calculate if possible to delegate to given subschema
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const proxiableSubschemas = [];
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const nonProxiableSubschemas = [];
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|
targetSubschemas.forEach(t => {
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const selectionSet = mergedTypeInfo.selectionSets.get(t);
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|
const fieldSelectionSets = mergedTypeInfo.fieldSelectionSets.get(t);
|
|
if (selectionSet != null &&
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!subschemaTypesContainSelectionSet(mergedTypeInfo, sourceSubschemaOrSourceSubschemas, selectionSet)) {
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nonProxiableSubschemas.push(t);
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}
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else {
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if (fieldSelectionSets == null ||
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fieldNodes.every(fieldNode => {
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const fieldName = fieldNode.name.value;
|
|
const fieldSelectionSet = fieldSelectionSets[fieldName];
|
|
return (fieldSelectionSet == null ||
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subschemaTypesContainSelectionSet(mergedTypeInfo, sourceSubschemaOrSourceSubschemas, fieldSelectionSet));
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})) {
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proxiableSubschemas.push(t);
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}
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else {
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nonProxiableSubschemas.push(t);
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}
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}
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});
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return {
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proxiableSubschemas,
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nonProxiableSubschemas,
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};
|
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});
|
|
const buildDelegationPlan = memoize3(function (mergedTypeInfo, fieldNodes, proxiableSubschemas) {
|
|
const { uniqueFields, nonUniqueFields } = mergedTypeInfo;
|
|
const unproxiableFieldNodes = [];
|
|
// 2. for each selection:
|
|
const delegationMap = new Map();
|
|
fieldNodes.forEach(fieldNode => {
|
|
if (fieldNode.name.value === '__typename') {
|
|
return;
|
|
}
|
|
// 2a. use uniqueFields map to assign fields to subschema if one of possible subschemas
|
|
const uniqueSubschema = uniqueFields[fieldNode.name.value];
|
|
if (uniqueSubschema != null) {
|
|
if (!proxiableSubschemas.includes(uniqueSubschema)) {
|
|
unproxiableFieldNodes.push(fieldNode);
|
|
return;
|
|
}
|
|
const existingSubschema = delegationMap.get(uniqueSubschema);
|
|
if (existingSubschema != null) {
|
|
existingSubschema.push(fieldNode);
|
|
}
|
|
else {
|
|
delegationMap.set(uniqueSubschema, [fieldNode]);
|
|
}
|
|
return;
|
|
}
|
|
// 2b. use nonUniqueFields to assign to a possible subschema,
|
|
// preferring one of the subschemas already targets of delegation
|
|
let nonUniqueSubschemas = nonUniqueFields[fieldNode.name.value];
|
|
if (nonUniqueSubschemas == null) {
|
|
unproxiableFieldNodes.push(fieldNode);
|
|
return;
|
|
}
|
|
nonUniqueSubschemas = nonUniqueSubschemas.filter(s => proxiableSubschemas.includes(s));
|
|
if (!nonUniqueSubschemas.length) {
|
|
unproxiableFieldNodes.push(fieldNode);
|
|
return;
|
|
}
|
|
const existingSubschema = nonUniqueSubschemas.find(s => delegationMap.has(s));
|
|
if (existingSubschema != null) {
|
|
delegationMap.get(existingSubschema).push(fieldNode);
|
|
}
|
|
else {
|
|
delegationMap.set(nonUniqueSubschemas[0], [fieldNode]);
|
|
}
|
|
});
|
|
const finalDelegationMap = new Map();
|
|
delegationMap.forEach((selections, subschema) => {
|
|
finalDelegationMap.set(subschema, {
|
|
kind: Kind.SELECTION_SET,
|
|
selections,
|
|
});
|
|
});
|
|
return {
|
|
delegationMap: finalDelegationMap,
|
|
unproxiableFieldNodes,
|
|
};
|
|
});
|
|
const combineSubschemas = memoize2(function (subschemaOrSubschemas, additionalSubschemas) {
|
|
return Array.isArray(subschemaOrSubschemas)
|
|
? subschemaOrSubschemas.concat(additionalSubschemas)
|
|
: [subschemaOrSubschemas].concat(additionalSubschemas);
|
|
});
|
|
function mergeFields(mergedTypeInfo, typeName, object, fieldNodes, sourceSubschemaOrSourceSubschemas, targetSubschemas, context, info) {
|
|
if (!fieldNodes.length) {
|
|
return object;
|
|
}
|
|
const { proxiableSubschemas, nonProxiableSubschemas } = sortSubschemasByProxiability(mergedTypeInfo, sourceSubschemaOrSourceSubschemas, targetSubschemas, fieldNodes);
|
|
const { delegationMap, unproxiableFieldNodes } = buildDelegationPlan(mergedTypeInfo, fieldNodes, proxiableSubschemas);
|
|
if (!delegationMap.size) {
|
|
return object;
|
|
}
|
|
let containsPromises = false;
|
|
const resultMap = new Map();
|
|
delegationMap.forEach((selectionSet, s) => {
|
|
const resolver = mergedTypeInfo.resolvers.get(s);
|
|
let maybePromise = resolver(object, context, info, s, selectionSet);
|
|
if (isPromise(maybePromise)) {
|
|
containsPromises = true;
|
|
maybePromise = maybePromise.then(undefined, error => error);
|
|
}
|
|
resultMap.set(maybePromise, selectionSet);
|
|
});
|
|
return containsPromises
|
|
? Promise.all(resultMap.keys()).then(results => mergeFields(mergedTypeInfo, typeName, mergeExternalObjects(info.schema, responsePathAsArray(info.path), object.__typename, object, results, Array.from(resultMap.values())), unproxiableFieldNodes, combineSubschemas(sourceSubschemaOrSourceSubschemas, proxiableSubschemas), nonProxiableSubschemas, context, info))
|
|
: mergeFields(mergedTypeInfo, typeName, mergeExternalObjects(info.schema, responsePathAsArray(info.path), object.__typename, object, Array.from(resultMap.keys()), Array.from(resultMap.values())), unproxiableFieldNodes, combineSubschemas(sourceSubschemaOrSourceSubschemas, proxiableSubschemas), nonProxiableSubschemas, context, info);
|
|
}
|
|
const subschemaTypesContainSelectionSet = memoize3(function (mergedTypeInfo, sourceSubschemaOrSourceSubschemas, selectionSet) {
|
|
if (Array.isArray(sourceSubschemaOrSourceSubschemas)) {
|
|
return typesContainSelectionSet(sourceSubschemaOrSourceSubschemas.map(sourceSubschema => sourceSubschema.transformedSchema.getType(mergedTypeInfo.typeName)), selectionSet);
|
|
}
|
|
return typesContainSelectionSet([sourceSubschemaOrSourceSubschemas.transformedSchema.getType(mergedTypeInfo.typeName)], selectionSet);
|
|
});
|
|
function typesContainSelectionSet(types, selectionSet) {
|
|
const fieldMaps = types.map(type => type.getFields());
|
|
for (const selection of selectionSet.selections) {
|
|
if (selection.kind === Kind.FIELD) {
|
|
const fields = fieldMaps.map(fieldMap => fieldMap[selection.name.value]).filter(field => field != null);
|
|
if (!fields.length) {
|
|
return false;
|
|
}
|
|
if (selection.selectionSet != null) {
|
|
return typesContainSelectionSet(fields.map(field => getNamedType(field.type)), selection.selectionSet);
|
|
}
|
|
}
|
|
else if (selection.kind === Kind.INLINE_FRAGMENT && selection.typeCondition.name.value === types[0].name) {
|
|
return typesContainSelectionSet(types, selection.selectionSet);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function resolveExternalValue(result, unpathedErrors, subschema, context, info, returnType = info.returnType, skipTypeMerging) {
|
|
const type = getNullableType(returnType);
|
|
if (result instanceof Error) {
|
|
return result;
|
|
}
|
|
if (result == null) {
|
|
return reportUnpathedErrorsViaNull(unpathedErrors);
|
|
}
|
|
if (isLeafType(type)) {
|
|
return type.parseValue(result);
|
|
}
|
|
else if (isCompositeType(type)) {
|
|
return resolveExternalObject(type, result, unpathedErrors, subschema, context, info, skipTypeMerging);
|
|
}
|
|
else if (isListType(type)) {
|
|
return resolveExternalList(type, result, unpathedErrors, subschema, context, info, skipTypeMerging);
|
|
}
|
|
}
|
|
function resolveExternalObject(type, object, unpathedErrors, subschema, context, info, skipTypeMerging) {
|
|
var _a;
|
|
// if we have already resolved this object, for example, when the identical object appears twice
|
|
// in a list, see https://github.com/ardatan/graphql-tools/issues/2304
|
|
if (isExternalObject(object)) {
|
|
return object;
|
|
}
|
|
annotateExternalObject(object, unpathedErrors, subschema);
|
|
const stitchingInfo = (_a = info === null || info === void 0 ? void 0 : info.schema.extensions) === null || _a === void 0 ? void 0 : _a.stitchingInfo;
|
|
if (skipTypeMerging || !stitchingInfo) {
|
|
return object;
|
|
}
|
|
let typeName;
|
|
if (isAbstractType(type)) {
|
|
const resolvedType = info.schema.getTypeMap()[object.__typename];
|
|
if (resolvedType == null) {
|
|
throw new Error(`Unable to resolve type '${object.__typename}'. Did you forget to include a transform that renames types? Did you delegate to the original subschema rather that the subschema config object containing the transform?`);
|
|
}
|
|
typeName = resolvedType.name;
|
|
}
|
|
else {
|
|
typeName = type.name;
|
|
}
|
|
const mergedTypeInfo = stitchingInfo.mergedTypes[typeName];
|
|
let targetSubschemas;
|
|
// Within the stitching context, delegation to a stitched GraphQLSchema or SubschemaConfig
|
|
// will be redirected to the appropriate Subschema object, from which merge targets can be queried.
|
|
if (mergedTypeInfo != null) {
|
|
targetSubschemas = mergedTypeInfo.targetSubschemas.get(subschema);
|
|
}
|
|
// If there are no merge targets from the subschema, return.
|
|
if (!targetSubschemas) {
|
|
return object;
|
|
}
|
|
const fieldNodes = getFieldsNotInSubschema(info, subschema, mergedTypeInfo);
|
|
return mergeFields(mergedTypeInfo, typeName, object, fieldNodes, subschema, targetSubschemas, context, info);
|
|
}
|
|
function resolveExternalList(type, list, unpathedErrors, subschema, context, info, skipTypeMerging) {
|
|
return list.map(listMember => resolveExternalListMember(getNullableType(type.ofType), listMember, unpathedErrors, subschema, context, info, skipTypeMerging));
|
|
}
|
|
function resolveExternalListMember(type, listMember, unpathedErrors, subschema, context, info, skipTypeMerging) {
|
|
if (listMember instanceof Error) {
|
|
return listMember;
|
|
}
|
|
if (listMember == null) {
|
|
return reportUnpathedErrorsViaNull(unpathedErrors);
|
|
}
|
|
if (isLeafType(type)) {
|
|
return type.parseValue(listMember);
|
|
}
|
|
else if (isCompositeType(type)) {
|
|
return resolveExternalObject(type, listMember, unpathedErrors, subschema, context, info, skipTypeMerging);
|
|
}
|
|
else if (isListType(type)) {
|
|
return resolveExternalList(type, listMember, unpathedErrors, subschema, context, info, skipTypeMerging);
|
|
}
|
|
}
|
|
const reportedErrors = new Map();
|
|
function reportUnpathedErrorsViaNull(unpathedErrors) {
|
|
if (unpathedErrors.length) {
|
|
const unreportedErrors = [];
|
|
unpathedErrors.forEach(error => {
|
|
if (!reportedErrors.has(error)) {
|
|
unreportedErrors.push(error);
|
|
reportedErrors.set(error, true);
|
|
}
|
|
});
|
|
if (unreportedErrors.length) {
|
|
if (unreportedErrors.length === 1) {
|
|
return unreportedErrors[0];
|
|
}
|
|
const combinedError = new AggregateError(unreportedErrors);
|
|
return locatedError(combinedError, undefined, unreportedErrors[0].path);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Resolver that knows how to:
|
|
* a) handle aliases for proxied schemas
|
|
* b) handle errors from proxied schemas
|
|
* c) handle external to internal enum coversion
|
|
*/
|
|
function defaultMergedResolver(parent, args, context, info) {
|
|
if (!parent) {
|
|
return null;
|
|
}
|
|
const responseKey = getResponseKeyFromInfo(info);
|
|
// check to see if parent is not a proxied result, i.e. if parent resolver was manually overwritten
|
|
// See https://github.com/apollographql/graphql-tools/issues/967
|
|
if (!isExternalObject(parent)) {
|
|
return defaultFieldResolver(parent, args, context, info);
|
|
}
|
|
const data = parent[responseKey];
|
|
const unpathedErrors = getUnpathedErrors(parent);
|
|
const subschema = getSubschema(parent, responseKey);
|
|
return resolveExternalValue(data, unpathedErrors, subschema, context, info);
|
|
}
|
|
|
|
class VisitSelectionSets {
|
|
constructor(visitor) {
|
|
this.visitor = visitor;
|
|
}
|
|
transformRequest(originalRequest, delegationContext, _transformationContext) {
|
|
const document = visitSelectionSets(originalRequest, delegationContext.info.schema, delegationContext.returnType, this.visitor);
|
|
return {
|
|
...originalRequest,
|
|
document,
|
|
};
|
|
}
|
|
}
|
|
function visitSelectionSets(request, schema, initialType, visitor) {
|
|
const { document, variables } = request;
|
|
const operations = [];
|
|
const fragments = Object.create(null);
|
|
document.definitions.forEach(def => {
|
|
if (def.kind === Kind.OPERATION_DEFINITION) {
|
|
operations.push(def);
|
|
}
|
|
else if (def.kind === Kind.FRAGMENT_DEFINITION) {
|
|
fragments[def.name.value] = def;
|
|
}
|
|
});
|
|
const partialExecutionContext = {
|
|
schema,
|
|
variableValues: variables,
|
|
fragments,
|
|
};
|
|
const typeInfo = new TypeInfo(schema, undefined, initialType);
|
|
const newDefinitions = operations.map(operation => {
|
|
const type = operation.operation === 'query'
|
|
? schema.getQueryType()
|
|
: operation.operation === 'mutation'
|
|
? schema.getMutationType()
|
|
: schema.getSubscriptionType();
|
|
const fields = collectFields(partialExecutionContext, type, operation.selectionSet, Object.create(null), Object.create(null));
|
|
const newSelections = [];
|
|
Object.keys(fields).forEach(responseKey => {
|
|
const fieldNodes = fields[responseKey];
|
|
fieldNodes.forEach(fieldNode => {
|
|
const selectionSet = fieldNode.selectionSet;
|
|
if (selectionSet == null) {
|
|
newSelections.push(fieldNode);
|
|
return;
|
|
}
|
|
const newSelectionSet = visit(selectionSet, visitWithTypeInfo(typeInfo, {
|
|
[Kind.SELECTION_SET]: node => visitor(node, typeInfo),
|
|
}));
|
|
if (newSelectionSet === selectionSet) {
|
|
newSelections.push(fieldNode);
|
|
return;
|
|
}
|
|
newSelections.push({
|
|
...fieldNode,
|
|
selectionSet: newSelectionSet,
|
|
});
|
|
});
|
|
});
|
|
return {
|
|
...operation,
|
|
selectionSet: {
|
|
kind: Kind.SELECTION_SET,
|
|
selections: newSelections,
|
|
},
|
|
};
|
|
});
|
|
Object.values(fragments).forEach(fragment => {
|
|
newDefinitions.push(visit(fragment, visitWithTypeInfo(typeInfo, {
|
|
[Kind.SELECTION_SET]: node => visitor(node, typeInfo),
|
|
})));
|
|
});
|
|
return {
|
|
...document,
|
|
definitions: newDefinitions,
|
|
};
|
|
}
|
|
|
|
class AddSelectionSets {
|
|
constructor(selectionSetsByType, selectionSetsByField, dynamicSelectionSetsByField) {
|
|
this.transformer = new VisitSelectionSets((node, typeInfo) => visitSelectionSet(node, typeInfo, selectionSetsByType, selectionSetsByField, dynamicSelectionSetsByField));
|
|
}
|
|
transformRequest(originalRequest, delegationContext, transformationContext) {
|
|
return this.transformer.transformRequest(originalRequest, delegationContext, transformationContext);
|
|
}
|
|
}
|
|
function visitSelectionSet(node, typeInfo, selectionSetsByType, selectionSetsByField, dynamicSelectionSetsByField) {
|
|
const parentType = typeInfo.getParentType();
|
|
const newSelections = new Map();
|
|
if (parentType != null) {
|
|
const parentTypeName = parentType.name;
|
|
addSelectionsToMap(newSelections, node);
|
|
if (parentTypeName in selectionSetsByType) {
|
|
const selectionSet = selectionSetsByType[parentTypeName];
|
|
addSelectionsToMap(newSelections, selectionSet);
|
|
}
|
|
if (parentTypeName in selectionSetsByField) {
|
|
node.selections.forEach(selection => {
|
|
if (selection.kind === Kind.FIELD) {
|
|
const name = selection.name.value;
|
|
const selectionSet = selectionSetsByField[parentTypeName][name];
|
|
if (selectionSet != null) {
|
|
addSelectionsToMap(newSelections, selectionSet);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
if (parentTypeName in dynamicSelectionSetsByField) {
|
|
node.selections.forEach(selection => {
|
|
if (selection.kind === Kind.FIELD) {
|
|
const name = selection.name.value;
|
|
const dynamicSelectionSets = dynamicSelectionSetsByField[parentTypeName][name];
|
|
if (dynamicSelectionSets != null) {
|
|
dynamicSelectionSets.forEach(selectionSetFn => {
|
|
const selectionSet = selectionSetFn(selection);
|
|
if (selectionSet != null) {
|
|
addSelectionsToMap(newSelections, selectionSet);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
});
|
|
}
|
|
return {
|
|
...node,
|
|
selections: Array.from(newSelections.values()),
|
|
};
|
|
}
|
|
}
|
|
const addSelectionsToMap = memoize2(function (map, selectionSet) {
|
|
selectionSet.selections.forEach(selection => {
|
|
map.set(print(selection), selection);
|
|
});
|
|
});
|
|
|
|
class ExpandAbstractTypes {
|
|
transformRequest(originalRequest, delegationContext, _transformationContext) {
|
|
const targetSchema = delegationContext.targetSchema;
|
|
const { possibleTypesMap, interfaceExtensionsMap } = extractPossibleTypes(delegationContext.info.schema, targetSchema);
|
|
const reversePossibleTypesMap = flipMapping(possibleTypesMap);
|
|
const document = expandAbstractTypes(targetSchema, possibleTypesMap, reversePossibleTypesMap, interfaceExtensionsMap, originalRequest.document);
|
|
return {
|
|
...originalRequest,
|
|
document,
|
|
};
|
|
}
|
|
}
|
|
function extractPossibleTypes(sourceSchema, targetSchema) {
|
|
const typeMap = sourceSchema.getTypeMap();
|
|
const possibleTypesMap = Object.create(null);
|
|
const interfaceExtensionsMap = Object.create(null);
|
|
Object.keys(typeMap).forEach(typeName => {
|
|
const type = typeMap[typeName];
|
|
if (isAbstractType(type)) {
|
|
const targetType = targetSchema.getType(typeName);
|
|
if (isInterfaceType(type) && isInterfaceType(targetType)) {
|
|
const targetTypeFields = targetType.getFields();
|
|
const extensionFields = Object.create(null);
|
|
Object.keys(type.getFields()).forEach((fieldName) => {
|
|
if (!targetTypeFields[fieldName]) {
|
|
extensionFields[fieldName] = true;
|
|
}
|
|
});
|
|
if (Object.keys(extensionFields).length) {
|
|
interfaceExtensionsMap[typeName] = extensionFields;
|
|
}
|
|
}
|
|
if (!isAbstractType(targetType) || typeName in interfaceExtensionsMap) {
|
|
const implementations = sourceSchema.getPossibleTypes(type);
|
|
possibleTypesMap[typeName] = implementations
|
|
.filter(impl => targetSchema.getType(impl.name))
|
|
.map(impl => impl.name);
|
|
}
|
|
}
|
|
});
|
|
return { possibleTypesMap, interfaceExtensionsMap };
|
|
}
|
|
function flipMapping(mapping) {
|
|
const result = Object.create(null);
|
|
Object.keys(mapping).forEach(typeName => {
|
|
const toTypeNames = mapping[typeName];
|
|
toTypeNames.forEach(toTypeName => {
|
|
if (!(toTypeName in result)) {
|
|
result[toTypeName] = [];
|
|
}
|
|
result[toTypeName].push(typeName);
|
|
});
|
|
});
|
|
return result;
|
|
}
|
|
function expandAbstractTypes(targetSchema, possibleTypesMap, reversePossibleTypesMap, interfaceExtensionsMap, document) {
|
|
const operations = document.definitions.filter(def => def.kind === Kind.OPERATION_DEFINITION);
|
|
const fragments = document.definitions.filter(def => def.kind === Kind.FRAGMENT_DEFINITION);
|
|
const existingFragmentNames = fragments.map(fragment => fragment.name.value);
|
|
let fragmentCounter = 0;
|
|
const generateFragmentName = (typeName) => {
|
|
let fragmentName;
|
|
do {
|
|
fragmentName = `_${typeName}_Fragment${fragmentCounter.toString()}`;
|
|
fragmentCounter++;
|
|
} while (existingFragmentNames.indexOf(fragmentName) !== -1);
|
|
return fragmentName;
|
|
};
|
|
const generateInlineFragment = (typeName, selectionSet) => {
|
|
return {
|
|
kind: Kind.INLINE_FRAGMENT,
|
|
typeCondition: {
|
|
kind: Kind.NAMED_TYPE,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: typeName,
|
|
},
|
|
},
|
|
selectionSet,
|
|
};
|
|
};
|
|
const newFragments = [];
|
|
const fragmentReplacements = Object.create(null);
|
|
fragments.forEach((fragment) => {
|
|
newFragments.push(fragment);
|
|
const possibleTypes = possibleTypesMap[fragment.typeCondition.name.value];
|
|
if (possibleTypes != null) {
|
|
fragmentReplacements[fragment.name.value] = [];
|
|
possibleTypes.forEach(possibleTypeName => {
|
|
const name = generateFragmentName(possibleTypeName);
|
|
existingFragmentNames.push(name);
|
|
const newFragment = {
|
|
kind: Kind.FRAGMENT_DEFINITION,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: name,
|
|
},
|
|
typeCondition: {
|
|
kind: Kind.NAMED_TYPE,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: possibleTypeName,
|
|
},
|
|
},
|
|
selectionSet: fragment.selectionSet,
|
|
};
|
|
newFragments.push(newFragment);
|
|
fragmentReplacements[fragment.name.value].push({
|
|
fragmentName: name,
|
|
typeName: possibleTypeName,
|
|
});
|
|
});
|
|
}
|
|
});
|
|
const newDocument = {
|
|
...document,
|
|
definitions: [...operations, ...newFragments],
|
|
};
|
|
const typeInfo = new TypeInfo(targetSchema);
|
|
return visit(newDocument, visitWithTypeInfo(typeInfo, {
|
|
[Kind.SELECTION_SET](node) {
|
|
let newSelections = node.selections;
|
|
const addedSelections = [];
|
|
const maybeType = typeInfo.getParentType();
|
|
if (maybeType != null) {
|
|
const parentType = getNamedType(maybeType);
|
|
const interfaceExtension = interfaceExtensionsMap[parentType.name];
|
|
const interfaceExtensionFields = [];
|
|
node.selections.forEach((selection) => {
|
|
if (selection.kind === Kind.INLINE_FRAGMENT) {
|
|
if (selection.typeCondition != null) {
|
|
const possibleTypes = possibleTypesMap[selection.typeCondition.name.value];
|
|
if (possibleTypes != null) {
|
|
possibleTypes.forEach(possibleType => {
|
|
const maybePossibleType = targetSchema.getType(possibleType);
|
|
if (maybePossibleType != null &&
|
|
implementsAbstractType(targetSchema, parentType, maybePossibleType)) {
|
|
addedSelections.push(generateInlineFragment(possibleType, selection.selectionSet));
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
else if (selection.kind === Kind.FRAGMENT_SPREAD) {
|
|
const fragmentName = selection.name.value;
|
|
if (fragmentName in fragmentReplacements) {
|
|
fragmentReplacements[fragmentName].forEach(replacement => {
|
|
const typeName = replacement.typeName;
|
|
const maybeReplacementType = targetSchema.getType(typeName);
|
|
if (maybeReplacementType != null && implementsAbstractType(targetSchema, parentType, maybeType)) {
|
|
addedSelections.push({
|
|
kind: Kind.FRAGMENT_SPREAD,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: replacement.fragmentName,
|
|
},
|
|
});
|
|
}
|
|
});
|
|
}
|
|
}
|
|
else if (interfaceExtension != null &&
|
|
interfaceExtension[selection.name.value] &&
|
|
selection.kind === Kind.FIELD) {
|
|
interfaceExtensionFields.push(selection);
|
|
}
|
|
});
|
|
if (parentType.name in reversePossibleTypesMap) {
|
|
addedSelections.push({
|
|
kind: Kind.FIELD,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: '__typename',
|
|
},
|
|
});
|
|
}
|
|
if (interfaceExtensionFields.length) {
|
|
const possibleTypes = possibleTypesMap[parentType.name];
|
|
if (possibleTypes != null) {
|
|
possibleTypes.forEach(possibleType => {
|
|
addedSelections.push(generateInlineFragment(possibleType, {
|
|
kind: Kind.SELECTION_SET,
|
|
selections: interfaceExtensionFields,
|
|
}));
|
|
});
|
|
newSelections = newSelections.filter((selection) => !(selection.kind === Kind.FIELD && interfaceExtension[selection.name.value]));
|
|
}
|
|
}
|
|
}
|
|
if (addedSelections.length) {
|
|
return {
|
|
...node,
|
|
selections: newSelections.concat(addedSelections),
|
|
};
|
|
}
|
|
},
|
|
}));
|
|
}
|
|
|
|
// For motivation, see https://github.com/ardatan/graphql-tools/issues/751
|
|
class WrapConcreteTypes {
|
|
transformRequest(originalRequest, delegationContext, _transformationContext) {
|
|
const document = wrapConcreteTypes(delegationContext.returnType, delegationContext.targetSchema, originalRequest.document);
|
|
return {
|
|
...originalRequest,
|
|
document,
|
|
};
|
|
}
|
|
}
|
|
function wrapConcreteTypes(returnType, targetSchema, document) {
|
|
var _a, _b, _c;
|
|
const namedType = getNamedType(returnType);
|
|
if (!isObjectType(namedType)) {
|
|
return document;
|
|
}
|
|
const queryTypeName = (_a = targetSchema.getQueryType()) === null || _a === void 0 ? void 0 : _a.name;
|
|
const mutationTypeName = (_b = targetSchema.getMutationType()) === null || _b === void 0 ? void 0 : _b.name;
|
|
const subscriptionTypeName = (_c = targetSchema.getSubscriptionType()) === null || _c === void 0 ? void 0 : _c.name;
|
|
const typeInfo = new TypeInfo(targetSchema);
|
|
const newDocument = visit(document, visitWithTypeInfo(typeInfo, {
|
|
[Kind.FRAGMENT_DEFINITION]: (node) => {
|
|
const typeName = node.typeCondition.name.value;
|
|
if (typeName !== queryTypeName && typeName !== mutationTypeName && typeName !== subscriptionTypeName) {
|
|
return false;
|
|
}
|
|
},
|
|
[Kind.FIELD]: (node) => {
|
|
if (isAbstractType(getNamedType(typeInfo.getType()))) {
|
|
return {
|
|
...node,
|
|
selectionSet: {
|
|
kind: Kind.SELECTION_SET,
|
|
selections: [
|
|
{
|
|
kind: Kind.INLINE_FRAGMENT,
|
|
typeCondition: {
|
|
kind: Kind.NAMED_TYPE,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: namedType.name,
|
|
},
|
|
},
|
|
selectionSet: node.selectionSet,
|
|
},
|
|
],
|
|
},
|
|
};
|
|
}
|
|
},
|
|
}),
|
|
// visitorKeys argument usage a la https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-source-graphql/src/batching/merge-queries.js
|
|
// empty keys cannot be removed only because of typescript errors
|
|
// will hopefully be fixed in future version of graphql-js to be optional
|
|
{
|
|
Name: [],
|
|
Document: ['definitions'],
|
|
OperationDefinition: ['selectionSet'],
|
|
VariableDefinition: [],
|
|
Variable: [],
|
|
SelectionSet: ['selections'],
|
|
Field: [],
|
|
Argument: [],
|
|
FragmentSpread: [],
|
|
InlineFragment: ['selectionSet'],
|
|
FragmentDefinition: ['selectionSet'],
|
|
IntValue: [],
|
|
FloatValue: [],
|
|
StringValue: [],
|
|
BooleanValue: [],
|
|
NullValue: [],
|
|
EnumValue: [],
|
|
ListValue: [],
|
|
ObjectValue: [],
|
|
ObjectField: [],
|
|
Directive: [],
|
|
NamedType: [],
|
|
ListType: [],
|
|
NonNullType: [],
|
|
SchemaDefinition: [],
|
|
OperationTypeDefinition: [],
|
|
ScalarTypeDefinition: [],
|
|
ObjectTypeDefinition: [],
|
|
FieldDefinition: [],
|
|
InputValueDefinition: [],
|
|
InterfaceTypeDefinition: [],
|
|
UnionTypeDefinition: [],
|
|
EnumTypeDefinition: [],
|
|
EnumValueDefinition: [],
|
|
InputObjectTypeDefinition: [],
|
|
DirectiveDefinition: [],
|
|
SchemaExtension: [],
|
|
ScalarTypeExtension: [],
|
|
ObjectTypeExtension: [],
|
|
InterfaceTypeExtension: [],
|
|
UnionTypeExtension: [],
|
|
EnumTypeExtension: [],
|
|
InputObjectTypeExtension: [],
|
|
});
|
|
return newDocument;
|
|
}
|
|
|
|
class FilterToSchema {
|
|
transformRequest(originalRequest, delegationContext, _transformationContext) {
|
|
return {
|
|
...originalRequest,
|
|
...filterToSchema(delegationContext.targetSchema, originalRequest.document, originalRequest.variables),
|
|
};
|
|
}
|
|
}
|
|
function filterToSchema(targetSchema, document, variables) {
|
|
const operations = document.definitions.filter(def => def.kind === Kind.OPERATION_DEFINITION);
|
|
const fragments = document.definitions.filter(def => def.kind === Kind.FRAGMENT_DEFINITION);
|
|
let usedVariables = [];
|
|
let usedFragments = [];
|
|
const newOperations = [];
|
|
let newFragments = [];
|
|
const validFragments = fragments.filter((fragment) => {
|
|
const typeName = fragment.typeCondition.name.value;
|
|
return Boolean(targetSchema.getType(typeName));
|
|
});
|
|
const validFragmentsWithType = validFragments.reduce((prev, fragment) => ({
|
|
...prev,
|
|
[fragment.name.value]: targetSchema.getType(fragment.typeCondition.name.value),
|
|
}), {});
|
|
let fragmentSet = Object.create(null);
|
|
operations.forEach((operation) => {
|
|
let type;
|
|
if (operation.operation === 'subscription') {
|
|
type = targetSchema.getSubscriptionType();
|
|
}
|
|
else if (operation.operation === 'mutation') {
|
|
type = targetSchema.getMutationType();
|
|
}
|
|
else {
|
|
type = targetSchema.getQueryType();
|
|
}
|
|
const { selectionSet, usedFragments: operationUsedFragments, usedVariables: operationUsedVariables, } = filterSelectionSet(targetSchema, type, validFragmentsWithType, operation.selectionSet);
|
|
usedFragments = union(usedFragments, operationUsedFragments);
|
|
const { usedVariables: collectedUsedVariables, newFragments: collectedNewFragments, fragmentSet: collectedFragmentSet, } = collectFragmentVariables(targetSchema, fragmentSet, validFragments, validFragmentsWithType, usedFragments);
|
|
const operationOrFragmentVariables = union(operationUsedVariables, collectedUsedVariables);
|
|
usedVariables = union(usedVariables, operationOrFragmentVariables);
|
|
newFragments = collectedNewFragments;
|
|
fragmentSet = collectedFragmentSet;
|
|
const variableDefinitions = operation.variableDefinitions.filter((variable) => operationOrFragmentVariables.indexOf(variable.variable.name.value) !== -1);
|
|
newOperations.push({
|
|
kind: Kind.OPERATION_DEFINITION,
|
|
operation: operation.operation,
|
|
name: operation.name,
|
|
directives: operation.directives,
|
|
variableDefinitions,
|
|
selectionSet,
|
|
});
|
|
});
|
|
const newVariables = usedVariables.reduce((acc, variableName) => {
|
|
const variableValue = variables[variableName];
|
|
if (variableValue !== undefined) {
|
|
acc[variableName] = variableValue;
|
|
}
|
|
return acc;
|
|
}, {});
|
|
return {
|
|
document: {
|
|
kind: Kind.DOCUMENT,
|
|
definitions: [...newOperations, ...newFragments],
|
|
},
|
|
variables: newVariables,
|
|
};
|
|
}
|
|
function collectFragmentVariables(targetSchema, fragmentSet, validFragments, validFragmentsWithType, usedFragments) {
|
|
let remainingFragments = usedFragments.slice();
|
|
let usedVariables = [];
|
|
const newFragments = [];
|
|
while (remainingFragments.length !== 0) {
|
|
const nextFragmentName = remainingFragments.pop();
|
|
const fragment = validFragments.find(fr => fr.name.value === nextFragmentName);
|
|
if (fragment != null) {
|
|
const name = nextFragmentName;
|
|
const typeName = fragment.typeCondition.name.value;
|
|
const type = targetSchema.getType(typeName);
|
|
const { selectionSet, usedFragments: fragmentUsedFragments, usedVariables: fragmentUsedVariables, } = filterSelectionSet(targetSchema, type, validFragmentsWithType, fragment.selectionSet);
|
|
remainingFragments = union(remainingFragments, fragmentUsedFragments);
|
|
usedVariables = union(usedVariables, fragmentUsedVariables);
|
|
if (!(name in fragmentSet)) {
|
|
fragmentSet[name] = true;
|
|
newFragments.push({
|
|
kind: Kind.FRAGMENT_DEFINITION,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: name,
|
|
},
|
|
typeCondition: fragment.typeCondition,
|
|
selectionSet,
|
|
});
|
|
}
|
|
}
|
|
}
|
|
return {
|
|
usedVariables,
|
|
newFragments,
|
|
fragmentSet,
|
|
};
|
|
}
|
|
function filterSelectionSet(schema, type, validFragments, selectionSet) {
|
|
const usedFragments = [];
|
|
const usedVariables = [];
|
|
const typeInfo = new TypeInfo(schema, undefined, type);
|
|
const filteredSelectionSet = visit(selectionSet, visitWithTypeInfo(typeInfo, {
|
|
[Kind.FIELD]: {
|
|
enter(node) {
|
|
const parentType = typeInfo.getParentType();
|
|
if (isObjectType(parentType) || isInterfaceType(parentType)) {
|
|
const fields = parentType.getFields();
|
|
const field = node.name.value === '__typename' ? TypeNameMetaFieldDef : fields[node.name.value];
|
|
if (!field) {
|
|
return null;
|
|
}
|
|
const argNames = (field.args != null ? field.args : []).map(arg => arg.name);
|
|
if (node.arguments != null) {
|
|
const args = node.arguments.filter((arg) => argNames.indexOf(arg.name.value) !== -1);
|
|
if (args.length !== node.arguments.length) {
|
|
return {
|
|
...node,
|
|
arguments: args,
|
|
};
|
|
}
|
|
}
|
|
}
|
|
},
|
|
leave(node) {
|
|
const resolvedType = getNamedType(typeInfo.getType());
|
|
if (isObjectType(resolvedType) || isInterfaceType(resolvedType)) {
|
|
const selections = node.selectionSet != null ? node.selectionSet.selections : null;
|
|
if (selections == null || selections.length === 0) {
|
|
// need to remove any added variables. Is there a better way to do this?
|
|
visit(node, {
|
|
[Kind.VARIABLE](variableNode) {
|
|
const index = usedVariables.indexOf(variableNode.name.value);
|
|
if (index !== -1) {
|
|
usedVariables.splice(index, 1);
|
|
}
|
|
},
|
|
});
|
|
return null;
|
|
}
|
|
}
|
|
},
|
|
},
|
|
[Kind.FRAGMENT_SPREAD](node) {
|
|
if (node.name.value in validFragments) {
|
|
const parentType = typeInfo.getParentType();
|
|
const innerType = validFragments[node.name.value];
|
|
if (!implementsAbstractType(schema, parentType, innerType)) {
|
|
return null;
|
|
}
|
|
usedFragments.push(node.name.value);
|
|
return;
|
|
}
|
|
return null;
|
|
},
|
|
[Kind.INLINE_FRAGMENT]: {
|
|
enter(node) {
|
|
if (node.typeCondition != null) {
|
|
const parentType = typeInfo.getParentType();
|
|
const innerType = schema.getType(node.typeCondition.name.value);
|
|
if (!implementsAbstractType(schema, parentType, innerType)) {
|
|
return null;
|
|
}
|
|
}
|
|
},
|
|
},
|
|
[Kind.VARIABLE](node) {
|
|
usedVariables.push(node.name.value);
|
|
},
|
|
}));
|
|
return {
|
|
selectionSet: filteredSelectionSet,
|
|
usedFragments,
|
|
usedVariables,
|
|
};
|
|
}
|
|
function union(...arrays) {
|
|
const cache = Object.create(null);
|
|
const result = [];
|
|
arrays.forEach(array => {
|
|
array.forEach(item => {
|
|
if (!(item in cache)) {
|
|
cache[item] = true;
|
|
result.push(item);
|
|
}
|
|
});
|
|
});
|
|
return result;
|
|
}
|
|
|
|
class AddTypenameToAbstract {
|
|
transformRequest(originalRequest, delegationContext, _transformationContext) {
|
|
const document = addTypenameToAbstract(delegationContext.targetSchema, originalRequest.document);
|
|
return {
|
|
...originalRequest,
|
|
document,
|
|
};
|
|
}
|
|
}
|
|
function addTypenameToAbstract(targetSchema, document) {
|
|
const typeInfo = new TypeInfo(targetSchema);
|
|
return visit(document, visitWithTypeInfo(typeInfo, {
|
|
[Kind.SELECTION_SET](node) {
|
|
const parentType = typeInfo.getParentType();
|
|
let selections = node.selections;
|
|
if (parentType != null && isAbstractType(parentType)) {
|
|
selections = selections.concat({
|
|
kind: Kind.FIELD,
|
|
name: {
|
|
kind: Kind.NAME,
|
|
value: '__typename',
|
|
},
|
|
});
|
|
}
|
|
if (selections !== node.selections) {
|
|
return {
|
|
...node,
|
|
selections,
|
|
};
|
|
}
|
|
},
|
|
}));
|
|
}
|
|
|
|
class CheckResultAndHandleErrors {
|
|
transformResult(originalResult, delegationContext, _transformationContext) {
|
|
return checkResultAndHandleErrors(originalResult, delegationContext.context != null ? delegationContext.context : {}, delegationContext.info, delegationContext.fieldName, delegationContext.subschema, delegationContext.returnType, delegationContext.skipTypeMerging, delegationContext.onLocatedError);
|
|
}
|
|
}
|
|
function checkResultAndHandleErrors(result, context, info, responseKey = getResponseKeyFromInfo(info), subschema, returnType = info.returnType, skipTypeMerging, onLocatedError) {
|
|
const { data, unpathedErrors } = mergeDataAndErrors(result.data == null ? undefined : result.data[responseKey], result.errors == null ? [] : result.errors, info ? responsePathAsArray(info.path) : undefined, onLocatedError);
|
|
return resolveExternalValue(data, unpathedErrors, subschema, context, info, returnType, skipTypeMerging);
|
|
}
|
|
function mergeDataAndErrors(data, errors, path, onLocatedError, index = 1) {
|
|
if (data == null) {
|
|
if (!errors.length) {
|
|
return { data: null, unpathedErrors: [] };
|
|
}
|
|
if (errors.length === 1) {
|
|
const error = onLocatedError ? onLocatedError(errors[0]) : errors[0];
|
|
const newPath = path === undefined ? error.path : error.path === undefined ? path : path.concat(error.path.slice(1));
|
|
return { data: relocatedError(errors[0], newPath), unpathedErrors: [] };
|
|
}
|
|
const newError = locatedError(new AggregateError(errors), undefined, path);
|
|
return { data: newError, unpathedErrors: [] };
|
|
}
|
|
if (!errors.length) {
|
|
return { data, unpathedErrors: [] };
|
|
}
|
|
let unpathedErrors = [];
|
|
const errorMap = Object.create(null);
|
|
errors.forEach(error => {
|
|
var _a;
|
|
const pathSegment = (_a = error.path) === null || _a === void 0 ? void 0 : _a[index];
|
|
if (pathSegment != null) {
|
|
const pathSegmentErrors = errorMap[pathSegment];
|
|
if (pathSegmentErrors === undefined) {
|
|
errorMap[pathSegment] = [error];
|
|
}
|
|
else {
|
|
pathSegmentErrors.push(error);
|
|
}
|
|
}
|
|
else {
|
|
unpathedErrors.push(error);
|
|
}
|
|
});
|
|
Object.keys(errorMap).forEach(pathSegment => {
|
|
if (data[pathSegment] !== undefined) {
|
|
const { data: newData, unpathedErrors: newErrors } = mergeDataAndErrors(data[pathSegment], errorMap[pathSegment], path, onLocatedError, index + 1);
|
|
data[pathSegment] = newData;
|
|
unpathedErrors = unpathedErrors.concat(newErrors);
|
|
}
|
|
else {
|
|
unpathedErrors = unpathedErrors.concat(errorMap[pathSegment]);
|
|
}
|
|
});
|
|
return { data, unpathedErrors };
|
|
}
|
|
|
|
class AddArgumentsAsVariables {
|
|
constructor(args) {
|
|
this.args = Object.entries(args).reduce((prev, [key, val]) => ({
|
|
...prev,
|
|
[key]: val,
|
|
}), {});
|
|
}
|
|
transformRequest(originalRequest, delegationContext, _transformationContext) {
|
|
const { document, variables } = addVariablesToRootField(delegationContext.targetSchema, originalRequest, this.args);
|
|
return {
|
|
...originalRequest,
|
|
document,
|
|
variables,
|
|
};
|
|
}
|
|
}
|
|
function addVariablesToRootField(targetSchema, originalRequest, args) {
|
|
const document = originalRequest.document;
|
|
const variableValues = originalRequest.variables;
|
|
const operations = document.definitions.filter(def => def.kind === Kind.OPERATION_DEFINITION);
|
|
const fragments = document.definitions.filter(def => def.kind === Kind.FRAGMENT_DEFINITION);
|
|
const newOperations = operations.map((operation) => {
|
|
const variableDefinitionMap = operation.variableDefinitions.reduce((prev, def) => ({
|
|
...prev,
|
|
[def.variable.name.value]: def,
|
|
}), {});
|
|
let type;
|
|
if (operation.operation === 'subscription') {
|
|
type = targetSchema.getSubscriptionType();
|
|
}
|
|
else if (operation.operation === 'mutation') {
|
|
type = targetSchema.getMutationType();
|
|
}
|
|
else {
|
|
type = targetSchema.getQueryType();
|
|
}
|
|
const newSelectionSet = [];
|
|
operation.selectionSet.selections.forEach((selection) => {
|
|
var _a;
|
|
if (selection.kind === Kind.FIELD) {
|
|
const argumentNodes = (_a = selection.arguments) !== null && _a !== void 0 ? _a : [];
|
|
const argumentNodeMap = argumentNodes.reduce((prev, argument) => ({
|
|
...prev,
|
|
[argument.name.value]: argument,
|
|
}), {});
|
|
const targetField = type.getFields()[selection.name.value];
|
|
// excludes __typename
|
|
if (targetField != null) {
|
|
updateArguments(targetField, argumentNodeMap, variableDefinitionMap, variableValues, args);
|
|
}
|
|
newSelectionSet.push({
|
|
...selection,
|
|
arguments: Object.keys(argumentNodeMap).map(argName => argumentNodeMap[argName]),
|
|
});
|
|
}
|
|
else {
|
|
newSelectionSet.push(selection);
|
|
}
|
|
});
|
|
return {
|
|
...operation,
|
|
variableDefinitions: Object.keys(variableDefinitionMap).map(varName => variableDefinitionMap[varName]),
|
|
selectionSet: {
|
|
kind: Kind.SELECTION_SET,
|
|
selections: newSelectionSet,
|
|
},
|
|
};
|
|
});
|
|
return {
|
|
document: {
|
|
...document,
|
|
definitions: [...newOperations, ...fragments],
|
|
},
|
|
variables: variableValues,
|
|
};
|
|
}
|
|
function updateArguments(targetField, argumentNodeMap, variableDefinitionMap, variableValues, newArgs) {
|
|
targetField.args.forEach((argument) => {
|
|
const argName = argument.name;
|
|
const argType = argument.type;
|
|
if (argName in newArgs) {
|
|
updateArgument(argName, argType, argumentNodeMap, variableDefinitionMap, variableValues, serializeInputValue(argType, newArgs[argName]));
|
|
}
|
|
});
|
|
}
|
|
|
|
function defaultDelegationBinding(delegationContext) {
|
|
var _a;
|
|
let delegationTransforms = [new CheckResultAndHandleErrors()];
|
|
const info = delegationContext.info;
|
|
const stitchingInfo = (_a = info === null || info === void 0 ? void 0 : info.schema.extensions) === null || _a === void 0 ? void 0 : _a.stitchingInfo;
|
|
if (stitchingInfo != null) {
|
|
delegationTransforms = delegationTransforms.concat([
|
|
new ExpandAbstractTypes(),
|
|
new AddSelectionSets(stitchingInfo.selectionSetsByType, stitchingInfo.selectionSetsByField, stitchingInfo.dynamicSelectionSetsByField),
|
|
new WrapConcreteTypes(),
|
|
]);
|
|
}
|
|
else if (info != null) {
|
|
delegationTransforms = delegationTransforms.concat([new WrapConcreteTypes(), new ExpandAbstractTypes()]);
|
|
}
|
|
else {
|
|
delegationTransforms.push(new WrapConcreteTypes());
|
|
}
|
|
const transforms = delegationContext.transforms;
|
|
if (transforms != null) {
|
|
delegationTransforms = delegationTransforms.concat(transforms.slice().reverse());
|
|
}
|
|
const args = delegationContext.args;
|
|
if (args != null) {
|
|
delegationTransforms.push(new AddArgumentsAsVariables(args));
|
|
}
|
|
delegationTransforms = delegationTransforms.concat([new FilterToSchema(), new AddTypenameToAbstract()]);
|
|
return delegationTransforms;
|
|
}
|
|
|
|
class Transformer {
|
|
constructor(context, binding = defaultDelegationBinding) {
|
|
this.transformations = [];
|
|
this.delegationContext = context;
|
|
const delegationTransforms = binding(this.delegationContext);
|
|
delegationTransforms.forEach(transform => this.addTransform(transform, {}));
|
|
}
|
|
addTransform(transform, context = {}) {
|
|
this.transformations.push({ transform, context });
|
|
}
|
|
transformRequest(originalRequest) {
|
|
return this.transformations.reduce((request, transformation) => transformation.transform.transformRequest != null
|
|
? transformation.transform.transformRequest(request, this.delegationContext, transformation.context)
|
|
: request, originalRequest);
|
|
}
|
|
transformResult(originalResult) {
|
|
return this.transformations.reduceRight((result, transformation) => transformation.transform.transformResult != null
|
|
? transformation.transform.transformResult(result, this.delegationContext, transformation.context)
|
|
: result, originalResult);
|
|
}
|
|
}
|
|
|
|
function delegateToSchema(options) {
|
|
const { info, operationName, operation = getDelegatingOperation(info.parentType, info.schema), fieldName = info.fieldName, returnType = info.returnType, selectionSet, fieldNodes, } = options;
|
|
const request = createRequestFromInfo({
|
|
info,
|
|
operation,
|
|
fieldName,
|
|
selectionSet,
|
|
fieldNodes,
|
|
operationName,
|
|
});
|
|
return delegateRequest({
|
|
...options,
|
|
request,
|
|
operation,
|
|
fieldName,
|
|
returnType,
|
|
});
|
|
}
|
|
function getDelegationReturnType(targetSchema, operation, fieldName) {
|
|
let rootType;
|
|
if (operation === 'query') {
|
|
rootType = targetSchema.getQueryType();
|
|
}
|
|
else if (operation === 'mutation') {
|
|
rootType = targetSchema.getMutationType();
|
|
}
|
|
else {
|
|
rootType = targetSchema.getSubscriptionType();
|
|
}
|
|
return rootType.getFields()[fieldName].type;
|
|
}
|
|
function delegateRequest({ request, schema: subschemaOrSubschemaConfig, rootValue, info, operation, fieldName, args, returnType, onLocatedError, context, transforms = [], transformedSchema, skipValidation, skipTypeMerging, binding, }) {
|
|
var _a, _b, _c;
|
|
let operationDefinition;
|
|
let targetOperation;
|
|
let targetFieldName;
|
|
if (operation == null) {
|
|
operationDefinition = getOperationAST(request.document, undefined);
|
|
targetOperation = operationDefinition.operation;
|
|
}
|
|
else {
|
|
targetOperation = operation;
|
|
}
|
|
if (fieldName == null) {
|
|
operationDefinition = operationDefinition !== null && operationDefinition !== void 0 ? operationDefinition : getOperationAST(request.document, undefined);
|
|
targetFieldName = operationDefinition.selectionSet.selections[0].name.value;
|
|
}
|
|
else {
|
|
targetFieldName = fieldName;
|
|
}
|
|
const { targetSchema, targetRootValue, subschemaConfig, allTransforms } = collectTargetParameters(subschemaOrSubschemaConfig, rootValue, info, transforms);
|
|
const delegationContext = {
|
|
subschema: subschemaOrSubschemaConfig,
|
|
targetSchema,
|
|
operation: targetOperation,
|
|
fieldName: targetFieldName,
|
|
args,
|
|
context,
|
|
info,
|
|
returnType: (_a = returnType !== null && returnType !== void 0 ? returnType : info === null || info === void 0 ? void 0 : info.returnType) !== null && _a !== void 0 ? _a : getDelegationReturnType(targetSchema, targetOperation, targetFieldName),
|
|
onLocatedError,
|
|
transforms: allTransforms,
|
|
transformedSchema: (_c = transformedSchema !== null && transformedSchema !== void 0 ? transformedSchema : (_b = subschemaConfig) === null || _b === void 0 ? void 0 : _b.transformedSchema) !== null && _c !== void 0 ? _c : targetSchema,
|
|
skipTypeMerging,
|
|
};
|
|
const transformer = new Transformer(delegationContext, binding);
|
|
const processedRequest = transformer.transformRequest(request);
|
|
if (!skipValidation) {
|
|
validateRequest(targetSchema, processedRequest.document);
|
|
}
|
|
if (targetOperation === 'query' || targetOperation === 'mutation') {
|
|
let executor = (subschemaConfig === null || subschemaConfig === void 0 ? void 0 : subschemaConfig.executor) || createDefaultExecutor(targetSchema, (subschemaConfig === null || subschemaConfig === void 0 ? void 0 : subschemaConfig.rootValue) || targetRootValue);
|
|
if (subschemaConfig === null || subschemaConfig === void 0 ? void 0 : subschemaConfig.batch) {
|
|
const batchingOptions = subschemaConfig === null || subschemaConfig === void 0 ? void 0 : subschemaConfig.batchingOptions;
|
|
executor = getBatchingExecutor(context, executor, batchingOptions === null || batchingOptions === void 0 ? void 0 : batchingOptions.dataLoaderOptions, batchingOptions === null || batchingOptions === void 0 ? void 0 : batchingOptions.extensionsReducer);
|
|
}
|
|
const executionResult = executor({
|
|
...processedRequest,
|
|
context,
|
|
info,
|
|
});
|
|
if (isPromise(executionResult)) {
|
|
return executionResult.then(originalResult => {
|
|
return transformer.transformResult(originalResult);
|
|
});
|
|
}
|
|
return transformer.transformResult(executionResult);
|
|
}
|
|
const subscriber = (subschemaConfig === null || subschemaConfig === void 0 ? void 0 : subschemaConfig.subscriber) || createDefaultSubscriber(targetSchema, (subschemaConfig === null || subschemaConfig === void 0 ? void 0 : subschemaConfig.rootValue) || targetRootValue);
|
|
return subscriber({
|
|
...processedRequest,
|
|
context,
|
|
info,
|
|
}).then((subscriptionResult) => {
|
|
if (Symbol.asyncIterator in subscriptionResult) {
|
|
// "subscribe" to the subscription result and map the result through the transforms
|
|
return mapAsyncIterator(subscriptionResult, originalResult => ({
|
|
[targetFieldName]: transformer.transformResult(originalResult),
|
|
}));
|
|
}
|
|
return transformer.transformResult(subscriptionResult);
|
|
});
|
|
}
|
|
const emptyObject = {};
|
|
function collectTargetParameters(subschema, rootValue, info, transforms = []) {
|
|
var _a, _b, _c, _d, _e;
|
|
const stitchingInfo = (_a = info === null || info === void 0 ? void 0 : info.schema.extensions) === null || _a === void 0 ? void 0 : _a.stitchingInfo;
|
|
const subschemaOrSubschemaConfig = (_b = stitchingInfo === null || stitchingInfo === void 0 ? void 0 : stitchingInfo.subschemaMap.get(subschema)) !== null && _b !== void 0 ? _b : subschema;
|
|
if (isSubschemaConfig(subschemaOrSubschemaConfig)) {
|
|
return {
|
|
targetSchema: subschemaOrSubschemaConfig.schema,
|
|
targetRootValue: (_d = (_c = rootValue !== null && rootValue !== void 0 ? rootValue : subschemaOrSubschemaConfig === null || subschemaOrSubschemaConfig === void 0 ? void 0 : subschemaOrSubschemaConfig.rootValue) !== null && _c !== void 0 ? _c : info === null || info === void 0 ? void 0 : info.rootValue) !== null && _d !== void 0 ? _d : emptyObject,
|
|
subschemaConfig: subschemaOrSubschemaConfig,
|
|
allTransforms: subschemaOrSubschemaConfig.transforms != null
|
|
? subschemaOrSubschemaConfig.transforms.concat(transforms)
|
|
: transforms,
|
|
};
|
|
}
|
|
return {
|
|
targetSchema: subschemaOrSubschemaConfig,
|
|
targetRootValue: (_e = rootValue !== null && rootValue !== void 0 ? rootValue : info === null || info === void 0 ? void 0 : info.rootValue) !== null && _e !== void 0 ? _e : emptyObject,
|
|
allTransforms: transforms,
|
|
};
|
|
}
|
|
function validateRequest(targetSchema, document) {
|
|
const errors = validate(targetSchema, document);
|
|
if (errors.length > 0) {
|
|
if (errors.length > 1) {
|
|
const combinedError = new AggregateError(errors);
|
|
throw combinedError;
|
|
}
|
|
const error = errors[0];
|
|
throw error.originalError || error;
|
|
}
|
|
}
|
|
const createDefaultExecutor = memoize2(function (schema, rootValue) {
|
|
return (({ document, context, variables, info }) => execute({
|
|
schema,
|
|
document,
|
|
contextValue: context,
|
|
variableValues: variables,
|
|
rootValue: rootValue !== null && rootValue !== void 0 ? rootValue : info === null || info === void 0 ? void 0 : info.rootValue,
|
|
}));
|
|
});
|
|
function createDefaultSubscriber(schema, rootValue) {
|
|
return ({ document, context, variables, info }) => subscribe({
|
|
schema,
|
|
document,
|
|
contextValue: context,
|
|
variableValues: variables,
|
|
rootValue: rootValue !== null && rootValue !== void 0 ? rootValue : info === null || info === void 0 ? void 0 : info.rootValue,
|
|
});
|
|
}
|
|
|
|
export { AddArgumentsAsVariables, AddSelectionSets, AddTypenameToAbstract, CheckResultAndHandleErrors, ExpandAbstractTypes, FilterToSchema, Subschema, VisitSelectionSets, annotateExternalObject, applySchemaTransforms, checkResultAndHandleErrors, cloneSubschemaConfig, createRequest, createRequestFromInfo, defaultDelegationBinding, defaultMergedResolver, delegateRequest, delegateToSchema, getDelegatingOperation, getSubschema, getUnpathedErrors, isExternalObject, isSubschema, isSubschemaConfig, mergeExternalObjects, resolveExternalValue };
|
|
//# sourceMappingURL=index.esm.js.map
|