Initial Save

node_modules/graphql/utilities/getOperationAST.js

@@ -0,0 +1,38 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.getOperationAST = getOperationAST;
+
+var _kinds = require("../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.
+ */
+function getOperationAST(documentAST, operationName) {
+  var operation = null;
+
+  for (var _i2 = 0, _documentAST$definiti2 = documentAST.definitions; _i2 < _documentAST$definiti2.length; _i2++) {
+    var definition = _documentAST$definiti2[_i2];
+
+    if (definition.kind === _kinds.Kind.OPERATION_DEFINITION) {
+      if (!operationName) {
+        // 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 && definition.name.value === operationName) {
+        return definition;
+      }
+    }
+  }
+
+  return operation;
+}