feat!: switch to node es module support

base.d.ts

@@ -0,0 +1,2 @@
+// For TypeScript that it doesn't understand the Node 13+ "exports" field
+export * from './out/base'

package.json

@@ -3,8 +3,19 @@
   "version": "1.0.4",
   "type": "module",
   "description": "A lightweight JSON RPC server & client",
-  "main": "out/index.js",
-  "module": "out/index.js",
+  "main": "out/full.cjs",
+  "module": "out/full.mjs",
+  "types": "./out/full.es.d.ts",
+  "exports": {
+    ".": {
+      "require": "./out/full.cjs",
+      "import": "./out/full.mjs"
+    },
+    "./base": {
+      "require": "./out/base.cjs",
+      "import": "./out/base.mjs"
+    }
+  },
   "scripts": {
     "release": "rimraf ./out && standard-version",
     "start": "node ./watch.js",

rollup.config.js

@@ -25,28 +25,29 @@ const full = {
 const dtsConfig = [
     {
         input: './es/Async-Call.d.ts',
-        output: [{ file: './out/base.es.d.ts', format: 'es' }],
+        output: [{ file: './out/base.d.ts', format: 'es' }],
         plugins: [dts()],
     },
     {
         input: './es/index.d.ts',
-        output: [{ file: './out/full.es.d.ts', format: 'es' }],
+        output: [{ file: './out/full.d.ts', format: 'es' }],
         plugins: [dts()],
     },
 ]
 export default [base, full, ...dtsConfig]
 
 /**
  * @param {string} name
- * @param {rollup.ModuleFormat[]} format
+ * @param {('es' | 'umd')[]} format
  * @returns {rollup.OutputOptions[]}
  */
 function outputMatrix(name, format) {
     return format.map((f) => ({
-        file: `./out/${name}.${f}.js`,
+        file: `./out/${name}.${f === 'es' ? 'm' : 'c'}js`,
         name: 'AsyncCall',
         sourcemap: true,
-        banner: '/// <reference types="./full.es.d.ts" />',
+        format: f,
+        banner: `/// <reference types="./${name}.d.ts" />`,
         plugins: [
             terser({
                 compress: {