fix: Improve "require" and "commonjs" support

Signed-off-by: Gordon Smith <GordonJSmith@gmail.com>

README.md

@@ -41,7 +41,7 @@ graphviz.dot(dot).then(svg => {
 graphvizVersion.then(version => console.log(version));
 ```
 
-v2.x.x
+v2.x.x - ESM (Modern ECMAScript Modules)
 ```ts
 import { Graphviz } from "@hpcc-js/wasm/graphviz";
 
@@ -52,16 +52,19 @@ const svg = graphviz.dot(dot);
 console.log(graphviz.version());
 ```
 
+v2.x.x - CommonJS
+```ts
+const { Graphviz } = require("@hpcc-js/wasm/graphviz");
+
+Graphviz.load().then(graphviz => {
+    const dot = "digraph G { Hello -> World }";
+    const svg = graphviz.dot(dot);
+    console.log(graphviz.version());
+});
+```
+
 Notes:
 * Import must specify which wasm library you are using
 * wasmFolder is no longer needed
 * All wasm libraries have the same asynchronous load pattern
     - `const instance = await Wasm.load();`
-
-### ⚠⚠⚠ TypeScript Notes ⚠⚠⚠ 
-
-When importing an ESM package AND referencing explicit `exports` (like `@hpcc-js/wasm/graphviz` or `@hpcc-js/wasm/expat`), you should change the following tsconfig.json setting:
-* `moduleResolution: Node16`
-
-This will ensure the correct "types" are auto discovered.
-

package.json

@@ -21,30 +21,35 @@
     ".": {
       "types": "./types/index.d.ts",
       "import": "./dist/index.js",
+      "require": "./dist/index.cjs",
       "default": "./dist/index.umd.js"
     },
     "./base91": {
       "types": "./types/base91.d.ts",
       "import": "./dist/base91.js",
+      "require": "./dist/base91.cjs",
       "default": "./dist/base91.umd.js"
     },
     "./expat": {
       "types": "./types/expat.d.ts",
       "import": "./dist/expat.js",
+      "require": "./dist/expat.cjs",
       "default": "./dist/expat.umd.js"
     },
     "./graphviz": {
       "types": "./types/graphviz.d.ts",
       "import": "./dist/graphviz.js",
+      "require": "./dist/graphviz.cjs",
       "default": "./dist/graphviz.umd.js"
     },
     "./zstd": {
       "types": "./types/zstd.d.ts",
       "import": "./dist/zstd.js",
+      "require": "./dist/zstd.cjs",
       "default": "./dist/zstd.umd.js"
     }
   },
-  "main": "./dist/index.umd.js",
+  "main": "./dist/index.cjs",
   "module": "./dist/index.js",
   "browser": "./dist/index.umd.js",
   "unpkg": "./dist/index.umd.js",
@@ -167,4 +172,4 @@
     "url": "https://github.com/hpcc-systems/hpcc-js-wasm/issues"
   },
   "homepage": "https://hpcc-systems.github.io/hpcc-js-wasm/"
-}
+}

rollup.config.js

@@ -20,6 +20,11 @@ const browserTplIndex = (input, umdOutput, esOutput) => ({
         format: "umd",
         sourcemap: true,
         name: pkg.name
+    }, {
+        file: esOutput + ".cjs",
+        format: "commonjs",
+        sourcemap: true,
+        name: pkg.name
     }, {
         file: esOutput + ".js",
         format: "es",
@@ -42,6 +47,11 @@ const browserTpl = (input, umdOutput, esOutput) => ({
         format: "umd",
         sourcemap: true,
         name: pkg.name
+    }, {
+        file: esOutput + ".cjs",
+        format: "commonjs",
+        sourcemap: true,
+        name: pkg.name
     }, {
         file: esOutput + ".js",
         format: "es",