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node_modules/graphql/utilities/introspectionFromSchema.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.introspectionFromSchema = introspectionFromSchema;
+
+var _invariant = _interopRequireDefault(require("../jsutils/invariant"));
+
+var _isPromise = _interopRequireDefault(require("../jsutils/isPromise"));
+
+var _parser = require("../language/parser");
+
+var _execute = require("../execution/execute");
+
+var _introspectionQuery = require("./introspectionQuery");
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Build an IntrospectionQuery from a GraphQLSchema
+ *
+ * IntrospectionQuery is useful for utilities that care about type and field
+ * relationships, but do not need to traverse through those relationships.
+ *
+ * This is the inverse of buildClientSchema. The primary use case is outside
+ * of the server context, for instance when doing schema comparisons.
+ */
+function introspectionFromSchema(schema, options) {
+  var queryAST = (0, _parser.parse)((0, _introspectionQuery.getIntrospectionQuery)(options));
+  var result = (0, _execute.execute)(schema, queryAST);
+
+  /* istanbul ignore next */
+  !(0, _isPromise.default)(result) && !result.errors && result.data || (0, _invariant.default)(0);
+  return result.data;
+}