fix(pmxtjs): implement dual build (CJS/ESM) and fix default export interop

- Removed 'type: module' from package.json to support CJS by default
- Added 'dist/esm/package.json' generation to support ESM loaders
- Configured 'exports' field for proper CJS/ESM resolution
- Maintained 'import pmxt from '\''pmxtjs'\''' syntax for ESM users
- Updated tsconfig to output CommonJS and ESNext variants

Author: realfishsam

package-lock.json

@@ -27,7 +27,6 @@ export { Exchange, Polymarket, Kalshi } from "./pmxt/client.js";
 export { ServerManager } from "./pmxt/server-manager.js";
 export type * from "./pmxt/models.js";
 
-export const VERSION = "0.0.1";
 
 const pmxt = {
     Exchange,

sdks/typescript/index.ts

@@ -10,7 +10,6 @@
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "module": "./dist/esm/index.js",
-  "type": "module",
   "sideEffects": false,
   "exports": {
     ".": {
@@ -30,7 +29,7 @@
     "clean": "rm -rf dist",
     "generate": "npm run generate:sdk:typescript --workspace=pmxt-core",
     "prebuild": "npm run clean",
-    "build": "tsc && tsc -p tsconfig.esm.json",
+    "build": "tsc && tsc -p tsconfig.esm.json && echo '{ \"type\": \"module\" }' > dist/esm/package.json",
     "prepack": "npm run build",
     "test": "jest"
   },
@@ -49,4 +48,4 @@
     "ts-jest": "^29.4.6",
     "typescript": "^5.0.0"
   }
-}
+}

sdks/typescript/package.json

@@ -1,7 +1,8 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
-    "module": "NodeNext",
+    "module": "ESNext",
+    "moduleResolution": "Node",
     "outDir": "dist/esm"
   }
 }

sdks/typescript/tsconfig.esm.json

@@ -1,8 +1,8 @@
 {
   "compilerOptions": {
-    "target": "ESNext",
-    "module": "NodeNext",
-    "moduleResolution": "NodeNext",
+    "target": "ES2022",
+    "module": "CommonJS",
+    "moduleResolution": "Node",
     "declaration": true,
     "outDir": "./dist",
     "strict": true,