planning

node_modules/graphql/jsutils/devAssert.js.flow

@@ -0,0 +1,8 @@
+// @flow strict
+export default function devAssert(condition: mixed, message: string): void {
+  const booleanCondition = Boolean(condition);
+  // istanbul ignore else (See transformation done in './resources/inlineInvariant.js')
+  if (!booleanCondition) {
+    throw new Error(message);
+  }
+}