Switch to ESM

package.json

@@ -1,13 +1,20 @@
 {
     "name": "@polymarket/builder-signing-sdk",
     "description": "Polymarket SDK for creating builder headers",
-    "version": "0.0.9",
+    "version": "1.0.0",
     "contributors": [
         {
             "name": "Jonathan Amenechi",
             "url": "https://github.com/JonathanAmenechi"
         }
     ],
+    "type": "module",
+    "exports": {
+        ".": {
+            "types": "./dist/index.d.ts",
+            "default": "./dist/index.js"
+        }
+    },
     "main": "dist/index.js",
     "types": "dist/index.d.ts",
     "files": [
@@ -16,13 +23,12 @@
     "license": "MIT",
     "packageManager": "pnpm@10.30.3",
     "scripts": {
-        "build": "rm -rf dist && tsc --module commonjs",
+        "build": "rm -rf dist && tsc",
         "deploy": "npm run build && npm publish",
         "test": "vitest run --coverage"
     },
     "dependencies": {
-        "axios": "^1.12.2",
-        "tslib": "^2.8.1"
+        "axios": "^1.12.2"
     },
     "devDependencies": {
         "@types/node": "^22.19.11",

src/config.ts

@@ -1,12 +1,12 @@
-import { BuilderSigner } from "./signer";
-import { post } from "./http-helpers";
+import { BuilderSigner } from "./signer.js";
+import { post } from "./http-helpers/index.js";
 import {
     BuilderApiKeyCreds,
     BuilderHeaderPayload,
     BuilderType,
     RemoteBuilderConfig,
     RemoteSignerPayload 
-} from "./types";
+} from "./types.js";
 import { AxiosRequestHeaders } from 'axios';
 
 export class BuilderConfig {

src/index.ts

@@ -1,4 +1,4 @@
-export * from "./config";
-export * from "./signing";
-export * from "./signer";
-export * from "./types";
+export * from "./config.js";
+export * from "./signing/index.js";
+export * from "./signer.js";
+export * from "./types.js";

src/signer.ts

@@ -1,5 +1,5 @@
-import { buildHmacSignature } from "./signing";
-import { BuilderApiKeyCreds, BuilderHeaderPayload } from "./types";
+import { buildHmacSignature } from "./signing/index.js";
+import { BuilderApiKeyCreds, BuilderHeaderPayload } from "./types.js";
 
 
 export class BuilderSigner {

src/signing/hmac.ts

@@ -1,4 +1,4 @@
-import crypto from "crypto";
+import { createHmac } from "node:crypto";
 
 function replaceAll(s: string, search: string, replace: string) {
     return s.split(search).join(replace);
@@ -25,7 +25,7 @@ export const buildHmacSignature = (
     }
 
     const base64Secret = Buffer.from(secret, "base64");
-    const hmac = crypto.createHmac("sha256", base64Secret);
+    const hmac = createHmac("sha256", base64Secret);
     const sig = hmac.update(message).digest("base64");
 
     // NOTE: Must be url safe base64 encoding, but keep base64 "=" suffix

src/signing/index.ts

@@ -1 +1 @@
-export * from "./hmac";
+export * from "./hmac.js";

tests/config.test.ts

@@ -1,6 +1,6 @@
-import * as httpHelpers from '../src/http-helpers';
+import * as httpHelpers from '../src/http-helpers/index.js';
 import { describe, it, expect, vi, afterEach } from "vitest";
-import { BuilderApiKeyCreds, BuilderConfig, BuilderHeaderPayload, BuilderType } from "../src";
+import { BuilderApiKeyCreds, BuilderConfig, BuilderHeaderPayload, BuilderType } from "../src/index.js";
 
 describe("builder config", () => {
     afterEach(() => {

tests/hmac.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { buildHmacSignature } from "../src/signing";
+import { buildHmacSignature } from "../src/signing/index.js";
 
 describe("hmac", () => {
     it("buildHmacSignature", () => {

tests/signer.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { BuilderSigner, BuilderApiKeyCreds } from "../src";
+import { BuilderSigner, BuilderApiKeyCreds } from "../src/index.js";
 
 describe("builderHeaderPayload", () => {
     it("createBuilderHeaderPayload", () => {

tsconfig.json

@@ -11,16 +11,12 @@
     ],
     "compilerOptions": {
         "baseUrl": "./",
-        "module": "commonjs",
+        "module": "nodenext",
         "target": "esnext",
         "outDir": "./dist",
         "sourceMap": true,
         "declaration": true,
-        "moduleResolution": "node",
-        "esModuleInterop": true,
-        "experimentalDecorators": true,
-        "allowSyntheticDefaultImports": true,
-        "importHelpers": true,
+        "moduleResolution": "nodenext",
         "strict": true,
         "noFallthroughCasesInSwitch": true,
         "noUnusedLocals": true,
@@ -29,7 +25,7 @@
         "resolveJsonModule": true,
         "strictNullChecks": true,
         "typeRoots": ["node_modules/@types"],
-        "lib": ["es2018", "dom"],
+        "lib": ["es2022"],
         "skipLibCheck": true
     }
 }