flow like the river

BACK_BACK/node_modules/graphql/execution/values.d.ts

@@ -0,0 +1,65 @@
+import { Maybe } from '../jsutils/Maybe';
+
+import { GraphQLError } from '../error/GraphQLError';
+import {
+  FieldNode,
+  DirectiveNode,
+  VariableDefinitionNode,
+} from '../language/ast';
+
+import { GraphQLDirective } from '../type/directives';
+import { GraphQLSchema } from '../type/schema';
+import { GraphQLField } from '../type/definition';
+
+type CoercedVariableValues =
+  | { errors: ReadonlyArray<GraphQLError>; coerced?: never }
+  | { errors?: never; coerced: { [key: string]: any } };
+
+/**
+ * Prepares an object map of variableValues of the correct type based on the
+ * provided variable definitions and arbitrary input. If the input cannot be
+ * parsed to match the variable definitions, a GraphQLError will be thrown.
+ *
+ * Note: The returned value is a plain Object with a prototype, since it is
+ * exposed to user code. Care should be taken to not pull values from the
+ * Object prototype.
+ */
+export function getVariableValues(
+  schema: GraphQLSchema,
+  varDefNodes: ReadonlyArray<VariableDefinitionNode>,
+  inputs: { [key: string]: any },
+  options?: { maxErrors?: number },
+): CoercedVariableValues;
+
+/**
+ * Prepares an object map of argument values given a list of argument
+ * definitions and list of argument AST nodes.
+ *
+ * Note: The returned value is a plain Object with a prototype, since it is
+ * exposed to user code. Care should be taken to not pull values from the
+ * Object prototype.
+ */
+export function getArgumentValues(
+  def: GraphQLField<any, any> | GraphQLDirective,
+  node: FieldNode | DirectiveNode,
+  variableValues?: Maybe<{ [key: string]: any }>,
+): { [key: string]: any };
+
+/**
+ * Prepares an object map of argument values given a directive definition
+ * and a AST node which may contain directives. Optionally also accepts a map
+ * of variable values.
+ *
+ * If the directive does not exist on the node, returns undefined.
+ *
+ * Note: The returned value is a plain Object with a prototype, since it is
+ * exposed to user code. Care should be taken to not pull values from the
+ * Object prototype.
+ */
+export function getDirectiveValues(
+  directiveDef: GraphQLDirective,
+  node: {
+    readonly directives?: ReadonlyArray<DirectiveNode>;
+  },
+  variableValues?: Maybe<{ [key: string]: any }>,
+): undefined | { [key: string]: any };