babel-plugin-macros: Export all types and fix References type (#41422)

* update babel-plugin-macros types to match docs

* babel-plugin-macros update version and ts version

* babel-plugin-macros update createMacro and MacroError types

* babel-plugin-macros: revert typescript version to 2.9

types/babel-plugin-macros/babel-plugin-macros-tests.ts

@@ -1,8 +1,8 @@
-import { createMacro, MacroError } from 'babel-plugin-macros';
+import { createMacro, MacroError, References, Options, MacroParams, MacroHandler } from 'babel-plugin-macros';
 
 const macro = createMacro(
     ({ references, state, babel }) => {
-        references.forEach(() => {});
+        Object.keys(references).forEach(() => {});
         references.default.forEach(() => {});
         state.abc = 123;
         babel.parse("console.log('Hello world!')");

types/babel-plugin-macros/index.d.ts

@@ -1,36 +1,27 @@
-// Type definitions for babel-plugin-macros 2.6
+// Type definitions for babel-plugin-macros 2.8
 // Project: https://github.com/kentcdodds/babel-plugin-macros
 // Definitions by: Billy Kwok <https://github.com/billykwok>
+//                 Jake Runzer <https://github.com/coffee-cup>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.9
 import * as Babel from '@babel/core';
 
-type References = Babel.NodePath[];
+export interface References {
+    [key: string]: Babel.NodePath[];
+}
 
-interface Options {
+export interface Options {
     configName?: string;
 }
 
-interface MacroParams {
-    references: { default: References } & References;
+export interface MacroParams {
+    references: { default: Babel.NodePath[] } & References;
     state: any;
     babel: typeof Babel;
 }
 
-type MacroHandler = (params: MacroParams) => void;
+export type MacroHandler = (params: MacroParams) => void;
 
-declare function babel_plugin_macros(
-    babel: typeof Babel,
-    ref: {
-        require: (path: string) => any;
-        resolvePath: (src: string, baseDir: string) => any;
-    },
-): Babel.PluginObj;
+export class MacroError extends Error {}
 
-declare namespace babel_plugin_macros {
-    class MacroError extends Error {}
-
-    function createMacro(handler: MacroHandler, options?: Options): any;
-}
-
-export = babel_plugin_macros;
+export function createMacro(handler: MacroHandler, options?: Options): any;