add exports.types field (#115)

Author: hrsh7th

scripts/build.ts

@@ -37,6 +37,7 @@ const main = async () => {
       node: "./$cjs",
       browser: "./$esm",
       default: "./$cjs",
+      types: "./$types",
     },
   });
 

scripts/tools/dualPackageSupport.ts

@@ -1,7 +1,7 @@
 import * as fs from "fs";
 import { posix as path } from "path";
 
-export type SupportModuleType = "browser" | "node" | "require" | "import" | "default";
+export type SupportModuleType = "browser" | "node" | "require" | "import" | "default" | "types";
 
 export type SupportModule = {
   // eslint-disable-next-line no-unused-vars