flow like the river

BACK_BACK/node_modules/graphql/utilities/coerceInputValue.d.ts

@@ -0,0 +1,17 @@
+import { GraphQLInputType } from '../type/definition';
+import { GraphQLError } from '../error/GraphQLError';
+
+type OnErrorCB = (
+  path: ReadonlyArray<string | number>,
+  invalidValue: any,
+  error: GraphQLError,
+) => void;
+
+/**
+ * Coerces a JavaScript value given a GraphQL Input Type.
+ */
+export function coerceInputValue(
+  inputValue: any,
+  type: GraphQLInputType,
+  onError?: OnErrorCB,
+): any;