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checkResultAndHandleErrors.ts
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checkResultAndHandleErrors.ts
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import {
GraphQLResolveInfo,
responsePathAsArray,
getNullableType,
isObjectType,
isListType,
isEnumType,
isScalarType,
ExecutionResult,
GraphQLError,
} from 'graphql';
import { getResponseKeyFromInfo } from './getResponseKeyFromInfo';
import {
relocatedError,
combineErrors,
annotateWithChildrenErrors
} from './errors';
export function checkResultAndHandleErrors(
result: ExecutionResult,
info: GraphQLResolveInfo,
responseKey?: string
): any {
if (!responseKey) {
responseKey = getResponseKeyFromInfo(info);
}
if (!result.data) {
if (result.errors) {
throw relocatedError(
combineErrors(result.errors),
info.fieldNodes,
responsePathAsArray(info.path)
);
} else {
return null;
}
}
return handleResult(info, result.data[responseKey], result.errors || []);
}
export function handleResult(
info: GraphQLResolveInfo,
resultObject: any,
errors: ReadonlyArray<GraphQLError>
): any {
if (!resultObject) {
if (errors.length) {
throw relocatedError(
combineErrors(errors),
info.fieldNodes,
responsePathAsArray(info.path)
);
} else {
return null;
}
}
const nullableType = getNullableType(info.returnType);
if (isObjectType(nullableType) || isListType(nullableType)) {
annotateWithChildrenErrors(resultObject, errors);
} else if (isEnumType(nullableType)) {
const value = nullableType.getValue(resultObject);
if (value) {
return value.value;
}
} else if (isScalarType(nullableType)) {
return nullableType.parseValue(resultObject);
}
return resultObject;
}