feat: bundle ESM compatible exports

package.json

@@ -6,10 +6,15 @@
  "license": "Apache-2.0",
  "main": "dist/index.js",
  "types": "dist/index.d.ts",
+ "exports": {
+ "import": "./dist/index.mjs",
+ "require": "./dist/index.js"
+ },
  "scripts": {
  "test": "jest",
  "lint": "eslint src __tests__ --ext js,ts --fix",
  "build": "tsc -b src",
+ "postbuild": "gen-esm-wrapper dist/index.js dist/index.mjs",
  "watch": "tsc -b src -w",
  "clean": "tsc -b src --clean",
  "docs": "typedoc",
@@ -42,6 +47,7 @@
  "eslint": "^7.21.0",
  "eslint-config-prettier": "^8.1.0",
  "eslint-plugin-prettier": "^3.3.1",
+ "gen-esm-wrapper": "^1.1.1",
  "husky": "^5.1.3",
  "jest": "^26.6.3",
  "jest-circus": "^26.6.3",

tsconfig.base.json

@@ -1,7 +1,3 @@
 {
- "extends": "@sapphire/ts-config",
- "compilerOptions": {
- "target": "ES6",
- "isolatedModules": true
- }
+ "extends": "@sapphire/ts-config"
 }