TS: switch to Record utility type

src/error/GraphQLError.d.ts

@@ -18,7 +18,7 @@ export class GraphQLError extends Error {
     positions?: Maybe<ReadonlyArray<number>>,
     path?: Maybe<ReadonlyArray<string | number>>,
     originalError?: Maybe<Error>,
-    extensions?: Maybe<{ [key: string]: unknown }>,
+    extensions?: Maybe<Record<string, unknown>>,
   );
 
   /**
@@ -77,7 +77,7 @@ export class GraphQLError extends Error {
   /**
    * Extension fields to add to the formatted error.
    */
-  readonly extensions: { [key: string]: unknown } | undefined;
+  readonly extensions: Record<string, unknown> | undefined;
 }
 
 /**

src/execution/execute.d.ts

@@ -55,7 +55,7 @@ export interface ExecutionContext {
   contextValue: unknown;
   fragments: ObjMap<FragmentDefinitionNode>;
   operation: OperationDefinitionNode;
-  variableValues: { [key: string]: unknown };
+  variableValues: Record<string, unknown>;
   fieldResolver: GraphQLFieldResolver<any, any>;
   typeResolver: GraphQLTypeResolver<any, any>;
   errors: Array<GraphQLError>;
@@ -69,8 +69,8 @@ export interface ExecutionContext {
  *   - `extensions` is reserved for adding non-standard properties.
  */
 export interface ExecutionResult<
-  TData = { [key: string]: any },
-  TExtensions = { [key: string]: any }
+  TData = Record<string, any>,
+  TExtensions = Record<string, any>
 > {
   errors?: ReadonlyArray<GraphQLError>;
   // TS_SPECIFIC: TData. Motivation: https://github.com/graphql/graphql-js/pull/2490#issuecomment-639154229
@@ -79,8 +79,8 @@ export interface ExecutionResult<
 }
 
 export interface FormattedExecutionResult<
-  TData = { [key: string]: any },
-  TExtensions = { [key: string]: any }
+  TData = Record<string, any>,
+  TExtensions = Record<string, any>
 > {
   errors?: ReadonlyArray<GraphQLFormattedError>;
   // TS_SPECIFIC: TData. Motivation: https://github.com/graphql/graphql-js/pull/2490#issuecomment-639154229
@@ -93,7 +93,7 @@ export interface ExecutionArgs {
   document: DocumentNode;
   rootValue?: unknown;
   contextValue?: unknown;
-  variableValues?: Maybe<{ [key: string]: unknown }>;
+  variableValues?: Maybe<Record<string, unknown>>;
   operationName?: Maybe<string>;
   fieldResolver?: Maybe<GraphQLFieldResolver<any, any>>;
   typeResolver?: Maybe<GraphQLTypeResolver<any, any>>;
@@ -127,7 +127,7 @@ export function executeSync(args: ExecutionArgs): ExecutionResult;
 export function assertValidExecutionArguments(
   schema: GraphQLSchema,
   document: DocumentNode,
-  rawVariableValues: Maybe<{ [key: string]: unknown }>,
+  rawVariableValues: Maybe<Record<string, unknown>>,
 ): void;
 
 /**
@@ -143,7 +143,7 @@ export function buildExecutionContext(
   document: DocumentNode,
   rootValue: unknown,
   contextValue: unknown,
-  rawVariableValues: Maybe<{ [key: string]: unknown }>,
+  rawVariableValues: Maybe<Record<string, unknown>>,
   operationName: Maybe<string>,
   fieldResolver: Maybe<GraphQLFieldResolver<unknown, unknown>>,
   typeResolver?: Maybe<GraphQLTypeResolver<unknown, unknown>>,

src/execution/values.d.ts

@@ -14,7 +14,7 @@ import { GraphQLField } from '../type/definition';
 
 type CoercedVariableValues =
   | { errors: ReadonlyArray<GraphQLError>; coerced?: never }
-  | { errors?: never; coerced: { [key: string]: unknown } };
+  | { errors?: never; coerced: Record<string, unknown> };
 
 /**
  * Prepares an object map of variableValues of the correct type based on the
@@ -28,7 +28,7 @@ type CoercedVariableValues =
 export function getVariableValues(
   schema: GraphQLSchema,
   varDefNodes: ReadonlyArray<VariableDefinitionNode>,
-  inputs: { [key: string]: unknown },
+  inputs: Record<string, unknown>,
   options?: { maxErrors?: number },
 ): CoercedVariableValues;
 
@@ -44,7 +44,7 @@ export function getArgumentValues(
   def: GraphQLField<unknown, unknown> | GraphQLDirective,
   node: FieldNode | DirectiveNode,
   variableValues?: Maybe<ObjMap<unknown>>,
-): { [key: string]: unknown };
+): Record<string, unknown>;
 
 /**
  * Prepares an object map of argument values given a directive definition
@@ -63,4 +63,4 @@ export function getDirectiveValues(
     readonly directives?: ReadonlyArray<DirectiveNode>;
   },
   variableValues?: Maybe<ObjMap<unknown>>,
-): undefined | { [key: string]: unknown };
+): undefined | Record<string, unknown>;

src/graphql.d.ts

@@ -49,7 +49,7 @@ export interface GraphQLArgs {
   source: string | Source;
   rootValue?: unknown;
   contextValue?: unknown;
-  variableValues?: Maybe<{ [key: string]: unknown }>;
+  variableValues?: Maybe<Record<string, unknown>>;
   operationName?: Maybe<string>;
   fieldResolver?: Maybe<GraphQLFieldResolver<any, any>>;
   typeResolver?: Maybe<GraphQLTypeResolver<any, any>>;

src/subscription/subscribe.d.ts

@@ -74,7 +74,7 @@ export function createSourceEventStream(
   document: DocumentNode,
   rootValue?: unknown,
   contextValue?: unknown,
-  variableValues?: { [key: string]: unknown },
+  variableValues?: Record<string, unknown>,
   operationName?: Maybe<string>,
   fieldResolver?: Maybe<GraphQLFieldResolver<any, any>>,
 ): Promise<AsyncIterable<unknown> | ExecutionResult>;

src/type/definition.d.ts

@@ -464,7 +464,7 @@ export type GraphQLIsTypeOfFn<TSource, TContext> = (
 export type GraphQLFieldResolver<
   TSource,
   TContext,
-  TArgs = { [argName: string]: any }
+  TArgs = Record<string, any>
 > = (
   source: TSource,
   args: TArgs,
@@ -482,7 +482,7 @@ export interface GraphQLResolveInfo {
   readonly fragments: ObjMap<FragmentDefinitionNode>;
   readonly rootValue: unknown;
   readonly operation: OperationDefinitionNode;
-  readonly variableValues: { [variableName: string]: unknown };
+  readonly variableValues: Record<string, unknown>;
 }
 
 /**
@@ -508,7 +508,7 @@ export interface GraphQLFieldExtensions<
 export interface GraphQLFieldConfig<
   TSource,
   TContext,
-  TArgs = { [argName: string]: any }
+  TArgs = Record<string, any>
 > {
   description?: Maybe<string>;
   type: GraphQLOutputType;
@@ -550,11 +550,7 @@ export type GraphQLFieldConfigMap<TSource, TContext> = ObjMap<
   GraphQLFieldConfig<TSource, TContext>
 >;
 
-export interface GraphQLField<
-  TSource,
-  TContext,
-  TArgs = { [key: string]: any }
-> {
+export interface GraphQLField<TSource, TContext, TArgs = Record<string, any>> {
   name: string;
   description: Maybe<string>;
   type: GraphQLOutputType;