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node_modules/graphql-tools/dist/stitching/defaultMergedResolver.js

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+Object.defineProperty(exports, "__esModule", { value: true });
+var graphql_1 = require("graphql");
+var error_1 = require("graphql/error");
+var errors_1 = require("./errors");
+var getResponseKeyFromInfo_1 = require("./getResponseKeyFromInfo");
+// Resolver that knows how to:
+// a) handle aliases for proxied schemas
+// b) handle errors from proxied schemas
+var defaultMergedResolver = function (parent, args, context, info) {
+    if (!parent) {
+        return null;
+    }
+    var responseKey = getResponseKeyFromInfo_1.getResponseKeyFromInfo(info);
+    var errorResult = errors_1.getErrorsFromParent(parent, responseKey);
+    if (errorResult.kind === 'OWN') {
+        throw error_1.locatedError(new Error(errorResult.error.message), info.fieldNodes, graphql_1.responsePathAsArray(info.path));
+    }
+    var result = parent[responseKey];
+    if (result == null) {
+        result = parent[info.fieldName];
+    }
+    // subscription result mapping
+    if (!result && parent.data && parent.data[responseKey]) {
+        result = parent.data[responseKey];
+    }
+    if (errorResult.errors) {
+        result = errors_1.annotateWithChildrenErrors(result, errorResult.errors);
+    }
+    return result;
+};
+exports.default = defaultMergedResolver;
+//# sourceMappingURL=defaultMergedResolver.js.map