planning

node_modules/graphql/jsutils/defineInspect.js.flow

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+// @flow strict
+import invariant from './invariant';
+import nodejsCustomInspectSymbol from './nodejsCustomInspectSymbol';
+
+/**
+ * The `defineInspect()` function defines `inspect()` prototype method as alias of `toJSON`
+ */
+export default function defineInspect(
+  classObject: Class<any> | ((...args: Array<any>) => mixed),
+): void {
+  const fn = classObject.prototype.toJSON;
+  invariant(typeof fn === 'function');
+
+  classObject.prototype.inspect = fn;
+
+  // istanbul ignore else (See: 'https://github.com/graphql/graphql-js/issues/2317')
+  if (nodejsCustomInspectSymbol) {
+    classObject.prototype[nodejsCustomInspectSymbol] = fn;
+  }
+}