bump version

Bumps [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/typescript-eslint) from 8.60.1 to 8.61.0.
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/typescript-eslint/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v8.61.0/packages/typescript-eslint)

---
updated-dependencies:
- dependency-name: typescript-eslint
  dependency-version: 8.61.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.eslintrc.js

@@ -1,12 +0,0 @@
-module.exports = {
-  env: {
-    node: true,
-    commonjs: true,
-    es2021: true,
-  },
-  extends: ['airbnb', 'prettier'],
-  parserOptions: {
-    ecmaVersion: 'latest',
-  },
-  ignorePatterns: ['**/node_modules', '**/dist'],
-};

.github/dependabot.yml

@@ -4,3 +4,6 @@ updates:
     directory: '/'
     schedule:
       interval: 'weekly'
+    ignore:
+      - dependency-name: "@types*"
+        update-types: ["version-update:semver-major", "version-update:semver-minor"]

.github/workflows/check-build.yml

@@ -4,7 +4,7 @@ on:
     branches:
       - main
 jobs:
-  build-webui:
+  build:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository

.github/workflows/publish-npm.yml

@@ -22,5 +22,3 @@ jobs:
 
       - name: Publish to NPM
         run: npm publish --provenance --access=public
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/run-tests.yml

@@ -0,0 +1,25 @@
+name: Run @jwetzell/posistagenet tests
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'src/**'
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
+
+      - name: Set up Node.js
+        uses: actions/setup-node@0a44ba7841725637a19e28fa30b79a866c81b0a6 # v4.0.4
+        with:
+          node-version-file: '.nvmrc'
+          cache: 'npm'
+          cache-dependency-path: './package-lock.json'
+
+      - name: Install Node.js dependencies
+        run: npm ci
+
+      - run: npm run test

.nvmrc

@@ -1 +1 @@
-v20.15.1
+v24.15.0

README.md

@@ -28,7 +28,7 @@ decoder.decode(infoPacketBuffer)
 decoder.decode(dataPacketBuffer)
 
 // the system_name from info packets if available
-console.log(decoder.system_name)
+console.log(decoder.systemName)
 
 // map of trackers populated with any data that has been received
 // this merges both info and data packet properties into one

eslint.config.mjs

@@ -0,0 +1,13 @@
+import pluginJs from '@eslint/js';
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
+import globals from 'globals';
+import tseslint from 'typescript-eslint';
+
+/** @type {import('eslint').Linter.Config[]} */
+export default [
+  { files: ['**/*.{js,mjs,cjs,ts}'] },
+  { languageOptions: { globals: { ...globals.browser, ...globals.node } } },
+  pluginJs.configs.recommended,
+  ...tseslint.configs.recommended,
+  eslintPluginPrettierRecommended,
+];

package.json

@@ -1,29 +1,28 @@
 {
   "name": "@jwetzell/posistagenet",
-  "version": "1.1.0",
+  "version": "2.1.2",
   "description": "",
-  "main": "./dist/cjs/index.js",
-  "module": "./dist/esm/index.js",
-  "types": "./dist/types/index.d.ts",
+  "main": "./dist/index.cjs",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.cts",
   "exports": {
     ".": {
-      "import": "./dist/esm/index.js",
-      "require": "./dist/cjs/index.js",
-      "types": "./dist/types/index.d.ts"
-    }
+      "import": "./dist/index.mjs",
+      "require": "./dist/index.cjs"
+    },
+    "./package.json": "./package.json"
   },
   "scripts": {
     "prebuild": "rimraf dist",
-    "build": "npm run build:cjs && npm run build:esm && npm run build:types",
-    "build:cjs": "tsc -p tsconfig.cjs.json",
-    "build:esm": "tsc -p tsconfig.esm.json",
-    "build:types": "tsc -p tsconfig.types.json",
+    "build": "tsdown",
     "example:client": "node examples/psn_client.js",
     "example:server": "node examples/psn_server.js",
     "prepublishOnly": "npm run build",
-    "lint:check": "eslint ./",
+    "lint:check": "eslint ./src",
     "format:check": "prettier ./ --check",
-    "format:write": "prettier ./ --write"
+    "format:write": "prettier ./ --write",
+    "pretest": "npm run build",
+    "test": "node --test --experimental-test-coverage"
   },
   "files": [
     "dist"
@@ -36,12 +35,16 @@
   "repository": "https://github.com/jwetzell/psn-js",
   "license": "MIT",
   "devDependencies": {
-    "@types/node": "22.10.2",
-    "prettier": "3.4.2",
-    "rimraf": "6.0.1",
-    "typescript": "5.7.2",
-    "eslint": "8.48.0",
-    "eslint-config-airbnb": "19.0.4",
-    "eslint-config-prettier": "9.0.0"
+    "@eslint/js": "10.0.1",
+    "@types/node": "24.7.2",
+    "eslint": "10.5.0",
+    "eslint-config-prettier": "10.1.8",
+    "eslint-plugin-prettier": "5.5.6",
+    "globals": "17.6.0",
+    "prettier": "3.8.4",
+    "rimraf": "6.1.3",
+    "tsdown": "0.22.2",
+    "typescript": "6.0.3",
+    "typescript-eslint": "8.61.0"
   }
 }

src/decoder.ts

@@ -1,5 +1,11 @@
-import { Decoders } from '.';
-import { DataPacketChunk, InfoPacketChunk, Tracker, TrackerFromData, TrackerFromInfo } from './models';
+import { Decoders } from './index.js';
+import {
+  type DataPacketChunk,
+  type InfoPacketChunk,
+  Tracker,
+  TrackerFromData,
+  TrackerFromInfo,
+} from './models/index.js';
 
 export class Decoder {
   infoPacketFrames: { [key: number]: InfoPacketChunk[] } = {};

src/decoders/chunk.ts

@@ -1,16 +1,16 @@
-import { Chunk } from '../models/chunk';
+import type { Chunk } from '../models/chunk.js';
 
 export default (buffer: Uint8Array): Chunk => {
-  let offset = 0;
-  const view = new DataView(buffer.buffer, buffer.byteOffset, buffer.byteLength);
-  const id = view.getUint16(offset, true);
-  offset += 2;
+  if (buffer.length < 4) {
+    throw new Error('Chunk buffer must be at least 4 bytes');
+  }
 
-  // NOTE(jwetzell): this data is split up as 1 bit for has_subchunks and 15 bits for the data_len
-  const combinedLengthAndFlag = view.getUint16(offset, true);
+  const id = (buffer[1] << 8) + buffer[0];
+
+  // NOTE(jwetzell): this data is split up as 1 bit for hasSubchunks and 15 bits for the dataLen
+  const combinedLengthAndFlag = (buffer[3] << 8) + buffer[2];
   const hasSubchunks = combinedLengthAndFlag > 32768;
   const dataLen = hasSubchunks ? combinedLengthAndFlag - 32768 : combinedLengthAndFlag;
-  offset += 2;
 
   const header = {
     id,
@@ -18,7 +18,7 @@ export default (buffer: Uint8Array): Chunk => {
     hasSubchunks,
   };
 
-  const chunkData = buffer.subarray(offset, offset + header.dataLen);
+  const chunkData = buffer.subarray(4, 4 + header.dataLen);
 
   const chunk = {
     chunkData,

src/decoders/data/data-packet-chunk.ts

@@ -1,6 +1,6 @@
-import { Decoders } from '..';
-import { Constants } from '../../constants';
-import { DataPacketChunk, DataPacketChunkData } from '../../models/data/data-packet-chunk';
+import { Constants } from '../../constants.js';
+import type { DataPacketChunk, DataPacketChunkData } from '../../models/data/data-packet-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): DataPacketChunk => {
   const chunk = Decoders.Chunk(buffer);
@@ -10,8 +10,7 @@ export default (buffer: Uint8Array): DataPacketChunk => {
   if (chunk.header.hasSubchunks && chunk.chunkData && chunk.header.dataLen) {
     let offset = 0;
     while (offset < chunk.header.dataLen) {
-      const view = new DataView(chunk.chunkData.buffer, chunk.chunkData.byteOffset, chunk.chunkData.byteLength);
-      const chunkId = view.getUint16(offset, true);
+      const chunkId = (chunk.chunkData.subarray(offset)[1] << 8) + chunk.chunkData.subarray(offset)[0];
       switch (chunkId) {
         case 0x0000:
           data.packetHeader = Decoders.PacketHeaderChunk(chunk.chunkData.subarray(offset));

src/decoders/data/data-tracker-chunk.ts

@@ -1,6 +1,6 @@
-import { Decoders } from '..';
-import { Constants } from '../../constants';
-import { DataTrackerChunk, DataTrackerChunkData } from '../../models/data/data-tracker-chunk';
+import { Constants } from '../../constants.js';
+import type { DataTrackerChunk, DataTrackerChunkData } from '../../models/data/data-tracker-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): DataTrackerChunk => {
   const chunk = Decoders.Chunk(buffer);

src/decoders/data/data-tracker-list-chunk.ts

@@ -1,7 +1,7 @@
-import { Decoders } from '..';
-import { Constants } from '../../constants';
-import { DataTrackerChunk } from '../../models';
-import { DataTrackerListChunk, DataTrackerListChunkData } from '../../models/data/data-tracker-list-chunk';
+import { Constants } from '../../constants.js';
+import type { DataTrackerListChunk, DataTrackerListChunkData } from '../../models/data/data-tracker-list-chunk.js';
+import type { DataTrackerChunk } from '../../models/index.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): DataTrackerListChunk => {
   const chunk = Decoders.Chunk(buffer);

src/decoders/data/data-tracker-status-chunk.ts

@@ -1,7 +1,8 @@
-/* eslint-disable no-case-declarations */
-
-import { Decoders } from '..';
-import { DataTrackerStatusChunk, DataTrackerStatusChunkData } from '../../models/data/data-tracker-status-chunk';
+import type {
+  DataTrackerStatusChunk,
+  DataTrackerStatusChunkData,
+} from '../../models/data/data-tracker-status-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): DataTrackerStatusChunk => {
   const chunk = Decoders.Chunk(buffer);

src/decoders/data/data-tracker-timestamp-chunk.ts

@@ -1,10 +1,8 @@
-/* eslint-disable no-case-declarations */
-
-import { Decoders } from '..';
-import {
+import type {
   DataTrackerTimestampChunk,
   DataTrackerTimestampChunkData,
-} from '../../models/data/data-tracker-timestamp-chunk';
+} from '../../models/data/data-tracker-timestamp-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): DataTrackerTimestampChunk => {
   const chunk = Decoders.Chunk(buffer);

src/decoders/data/data-tracker-xyz-chunk.ts

@@ -1,5 +1,5 @@
-import { Decoders } from '..';
-import { DataTrackerXYZChunk, DataTrackerXYZChunkData } from '../../models/data/data-tracker-xyz-chunk';
+import type { DataTrackerXYZChunk, DataTrackerXYZChunkData } from '../../models/data/data-tracker-xyz-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): DataTrackerXYZChunk => {
   const chunk = Decoders.Chunk(buffer);

src/decoders/index.ts

@@ -1,24 +1,22 @@
-import Chunk from './chunk';
-import Packet from './packet';
-import PacketHeaderChunk from './packet-header-chunk';
+import Chunk from './chunk.js';
+import PacketHeaderChunk from './packet-header-chunk.js';
 
-import DataPacketChunk from './data/data-packet-chunk';
-import DataTrackerChunk from './data/data-tracker-chunk';
-import DataTrackerListChunk from './data/data-tracker-list-chunk';
-import DataTrackerStatusChunk from './data/data-tracker-status-chunk';
-import DataTrackerTimestampChunk from './data/data-tracker-timestamp-chunk';
-import DataTrackerXYZChunk from './data/data-tracker-xyz-chunk';
+import DataPacketChunk from './data/data-packet-chunk.js';
+import DataTrackerChunk from './data/data-tracker-chunk.js';
+import DataTrackerListChunk from './data/data-tracker-list-chunk.js';
+import DataTrackerStatusChunk from './data/data-tracker-status-chunk.js';
+import DataTrackerTimestampChunk from './data/data-tracker-timestamp-chunk.js';
+import DataTrackerXYZChunk from './data/data-tracker-xyz-chunk.js';
 
-import InfoPacketChunk from './info/info-packet-chunk';
-import InfoSystemNameChunk from './info/info-system-name-chunk';
-import InfoTrackerChunk from './info/info-tracker-chunk';
-import InfoTrackerListChunk from './info/info-tracker-list-chunk';
-import InfoTrackerNameChunk from './info/info-tracker-name-chunk';
+import InfoPacketChunk from './info/info-packet-chunk.js';
+import InfoSystemNameChunk from './info/info-system-name-chunk.js';
+import InfoTrackerChunk from './info/info-tracker-chunk.js';
+import InfoTrackerListChunk from './info/info-tracker-list-chunk.js';
+import InfoTrackerNameChunk from './info/info-tracker-name-chunk.js';
 
 export const Decoders = {
   Chunk,
   PacketHeaderChunk,
-  Packet,
   DataPacketChunk,
   DataTrackerChunk,
   DataTrackerXYZChunk,

src/decoders/info/info-packet-chunk.ts

@@ -1,6 +1,6 @@
-import { Decoders } from '..';
-import { Constants } from '../../constants';
-import { InfoPacketChunk, InfoPacketChunkData } from '../../models/info/info-packet-chunk';
+import { Constants } from '../../constants.js';
+import type { InfoPacketChunk, InfoPacketChunkData } from '../../models/info/info-packet-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): InfoPacketChunk => {
   const chunk = Decoders.Chunk(buffer);
@@ -10,8 +10,7 @@ export default (buffer: Uint8Array): InfoPacketChunk => {
   if (chunk.header.hasSubchunks && chunk.chunkData && chunk.header.dataLen) {
     let offset = 0;
     while (offset < chunk.header.dataLen) {
-      const view = new DataView(chunk.chunkData.buffer, chunk.chunkData.byteOffset, chunk.chunkData.byteLength);
-      const chunkId = view.getUint16(offset, true);
+      const chunkId = (chunk.chunkData.subarray(offset)[1] << 8) + chunk.chunkData.subarray(offset)[0];
       switch (chunkId) {
         case 0x0000:
           data.packetHeader = Decoders.PacketHeaderChunk(chunk.chunkData.subarray(offset));

src/decoders/info/info-system-name-chunk.ts

@@ -1,11 +1,12 @@
-import { Decoders } from '..';
-import { InfoSystemNameChunk, InfoSystemNameChunkData } from '../../models/info/info-system-name-chunk';
+import type { InfoSystemNameChunk, InfoSystemNameChunkData } from '../../models/info/info-system-name-chunk.js';
+import { Decoders } from '../index.js';
 
+const nameDecoder = new TextDecoder();
 export default (buffer: Uint8Array): InfoSystemNameChunk => {
   const chunk = Decoders.Chunk(buffer);
 
   const data: InfoSystemNameChunkData = {
-    systemName: new TextDecoder().decode(chunk.chunkData.subarray(0, chunk.header.dataLen)),
+    systemName: nameDecoder.decode(chunk.chunkData.subarray(0, chunk.header.dataLen)),
   };
 
   return {

src/decoders/info/info-tracker-chunk.ts

@@ -1,6 +1,6 @@
-import { Decoders } from '..';
-import { Constants } from '../../constants';
-import { InfoTrackerChunk, InfoTrackerChunkData } from '../../models/info/info-tracker-chunk';
+import { Constants } from '../../constants.js';
+import type { InfoTrackerChunk, InfoTrackerChunkData } from '../../models/info/info-tracker-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): InfoTrackerChunk => {
   const chunk = Decoders.Chunk(buffer);
@@ -8,10 +8,9 @@ export default (buffer: Uint8Array): InfoTrackerChunk => {
   if (chunk.header.hasSubchunks && chunk.chunkData && chunk.header.dataLen) {
     let offset = 0;
     while (offset < chunk.header.dataLen) {
-      const view = new DataView(chunk.chunkData.buffer, chunk.chunkData.byteOffset, chunk.chunkData.byteLength);
-      const chunkId = view.getUint16(offset, true);
+      const chunkId = (chunk.chunkData.subarray(offset)[1] << 8) + chunk.chunkData.subarray(offset)[0];
       switch (chunkId) {
-        case 0x0000:
+        case 0x0000: {
           const data: InfoTrackerChunkData = {
             trackerName: Decoders.InfoTrackerNameChunk(chunk.chunkData.subarray(offset)),
           };
@@ -23,7 +22,7 @@ export default (buffer: Uint8Array): InfoTrackerChunk => {
             chunk,
             data,
           };
-
+        }
         default:
           break;
       }

src/decoders/info/info-tracker-list-chunk.ts

@@ -1,7 +1,7 @@
-import { Decoders } from '..';
-import { Constants } from '../../constants';
-import { InfoTrackerChunk } from '../../models/info/info-tracker-chunk';
-import { InfoTrackerListChunk, InfoTrackerListChunkData } from '../../models/info/info-tracker-list-chunk';
+import { Constants } from '../../constants.js';
+import type { InfoTrackerChunk } from '../../models/info/info-tracker-chunk.js';
+import type { InfoTrackerListChunk, InfoTrackerListChunkData } from '../../models/info/info-tracker-list-chunk.js';
+import { Decoders } from '../index.js';
 
 export default (buffer: Uint8Array): InfoTrackerListChunk => {
   const chunk = Decoders.Chunk(buffer);

src/decoders/info/info-tracker-name-chunk.ts

@@ -1,11 +1,12 @@
-import { Decoders } from '..';
-import { InfoTrackerNameChunk, InfoTrackerNameChunkData } from '../../models/info/info-tracker-name-chunk';
+import type { InfoTrackerNameChunk, InfoTrackerNameChunkData } from '../../models/info/info-tracker-name-chunk.js';
+import { Decoders } from '../index.js';
 
+const nameDecoder = new TextDecoder();
 export default (buffer: Uint8Array): InfoTrackerNameChunk => {
   const chunk = Decoders.Chunk(buffer);
 
   const data: InfoTrackerNameChunkData = {
-    trackerName: new TextDecoder().decode(chunk.chunkData.subarray(0, chunk.header.dataLen)),
+    trackerName: nameDecoder.decode(chunk.chunkData.subarray(0, chunk.header.dataLen)),
   };
 
   return {

src/decoders/packet-header-chunk.ts

@@ -1,12 +1,19 @@
-import { Decoders } from '.';
-import { PacketHeaderChunk, PacketHeaderChunkData } from '../models/packet-header-chunk';
+import type { PacketHeaderChunk, PacketHeaderChunkData } from '../models/packet-header-chunk.js';
+import { Decoders } from './index.js';
 
 export default (buffer: Uint8Array): PacketHeaderChunk => {
   const chunk = Decoders.Chunk(buffer);
 
-  const view = new DataView(chunk.chunkData.buffer, chunk.chunkData.byteOffset, chunk.chunkData.byteLength);
+  let packetTimestamp = BigInt(chunk.chunkData[7]) << BigInt(56);
+  packetTimestamp += BigInt(chunk.chunkData[6]) << BigInt(48);
+  packetTimestamp += BigInt(chunk.chunkData[5]) << BigInt(40);
+  packetTimestamp += BigInt(chunk.chunkData[4]) << BigInt(32);
+  packetTimestamp += BigInt(chunk.chunkData[3]) << BigInt(24);
+  packetTimestamp += BigInt(chunk.chunkData[2]) << BigInt(16);
+  packetTimestamp += BigInt(chunk.chunkData[1]) << BigInt(8);
+  packetTimestamp += BigInt(chunk.chunkData[0]);
   const data: PacketHeaderChunkData = {
-    packetTimestamp: view.getBigUint64(0, true),
+    packetTimestamp,
     versionHigh: chunk.chunkData[8],
     versionLow: chunk.chunkData[9],
     frameId: chunk.chunkData[10],

src/decoders/packet.ts

@@ -1,17 +0,0 @@
-import { Decoders } from '.';
-import { DataPacketChunk } from '../models/data/data-packet-chunk';
-import { InfoPacketChunk } from '../models/info/info-packet-chunk';
-
-export default (buffer: Uint8Array): InfoPacketChunk | DataPacketChunk | undefined => {
-  const view = new DataView(buffer.buffer, buffer.byteOffset, buffer.byteLength);
-  const chunkId = view.getUint16(0, true);
-
-  switch (chunkId) {
-    case 0x6756:
-      return Decoders.InfoPacketChunk(buffer);
-    case 0x6755:
-      return Decoders.DataPacketChunk(buffer);
-    default:
-      return undefined;
-  }
-};

src/encoder.ts

@@ -1,5 +1,5 @@
-import { Encoders, Tracker } from '.';
-import { Constants } from './constants';
+import { Constants } from './constants.js';
+import { Encoders, Tracker } from './index.js';
 
 export class Encoder {
   private systemName: string;

src/encoders/chunk.ts

@@ -1,3 +1,4 @@
+const header = new DataView(new ArrayBuffer(4));
 export default (id: number, chunkData: Uint8Array, hasSubchunks: boolean): Uint8Array => {
   if (!Number.isInteger(id)) {
     throw new Error('chunk id must be an integer');
@@ -11,7 +12,6 @@ export default (id: number, chunkData: Uint8Array, hasSubchunks: boolean): Uint8
     throw new Error('chunkData can not be greater than 32767 bytes');
   }
 
-  const header = new DataView(new ArrayBuffer(4));
   header.setUint16(0, id, true);
   const hasSubChunksBit = (hasSubchunks ? 1 : 0) << 15;
   header.setUint16(2, hasSubChunksBit + chunkData.length, true);

src/encoders/data/data-packet-chunk.ts

@@ -1,4 +1,4 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 export default (packetHeaderChunk: Uint8Array, trackerListChunk: Uint8Array): Uint8Array => {
   const chunkData = new Uint8Array(packetHeaderChunk.length + trackerListChunk.length);
   chunkData.set(packetHeaderChunk);

src/encoders/data/data-tracker-accel-chunk.ts

@@ -1,9 +1,9 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
+const floatArray = new Float32Array(3);
 export default (x: number, y: number, z: number): Uint8Array => {
-  const buf = new DataView(new ArrayBuffer(12));
-  buf.setFloat32(0, x, true);
-  buf.setFloat32(4, y, true);
-  buf.setFloat32(8, z, true);
-  return chunk(0x0004, new Uint8Array(buf.buffer), false);
+  floatArray[0] = x;
+  floatArray[1] = y;
+  floatArray[2] = z;
+  return chunk(0x0004, new Uint8Array(floatArray.buffer), false);
 };

src/encoders/data/data-tracker-chunk.ts

@@ -1,4 +1,4 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
 export default (trackerId: number, fieldChunks: Uint8Array[]): Uint8Array => {
   let fieldChunksTotalLength = 0;

src/encoders/data/data-tracker-list-chunk.ts

@@ -1,4 +1,4 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
 export default (trackerChunks: Uint8Array[]) => {
   let trackerChunksTotalLength = 0;

src/encoders/data/data-tracker-ori-chunk.ts

@@ -1,10 +1,9 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
+const floatArray = new Float32Array(3);
 export default (x: number, y: number, z: number): Uint8Array => {
-  const buf = new DataView(new ArrayBuffer(12));
-
-  buf.setFloat32(0, x, true);
-  buf.setFloat32(4, y, true);
-  buf.setFloat32(8, z, true);
-  return chunk(0x0002, new Uint8Array(buf.buffer), false);
+  floatArray[0] = x;
+  floatArray[1] = y;
+  floatArray[2] = z;
+  return chunk(0x0002, new Uint8Array(floatArray.buffer), false);
 };

src/encoders/data/data-tracker-pos-chunk.ts

@@ -1,11 +1,10 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
+const floatArray = new Float32Array(3);
 export default (x: number, y: number, z: number): Uint8Array => {
-  const buf = new DataView(new ArrayBuffer(12));
+  floatArray[0] = x;
+  floatArray[1] = y;
+  floatArray[2] = z;
 
-  buf.setFloat32(0, x, true);
-  buf.setFloat32(4, y, true);
-  buf.setFloat32(8, z, true);
-
-  return chunk(0x0000, new Uint8Array(buf.buffer), false);
+  return chunk(0x0000, new Uint8Array(floatArray.buffer), false);
 };

src/encoders/data/data-tracker-speed-chunk.ts

@@ -1,11 +1,10 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
+const floatArray = new Float32Array(3);
 export default (x: number, y: number, z: number): Uint8Array => {
-  const buf = new DataView(new ArrayBuffer(12));
+  floatArray[0] = x;
+  floatArray[1] = y;
+  floatArray[2] = z;
 
-  buf.setFloat32(0, x, true);
-  buf.setFloat32(4, y, true);
-  buf.setFloat32(8, z, true);
-
-  return chunk(0x0001, new Uint8Array(buf.buffer), false);
+  return chunk(0x0001, new Uint8Array(floatArray.buffer), false);
 };

src/encoders/data/data-tracker-status-chunk.ts

@@ -1,7 +1,7 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
+const floatArray = new Float32Array(1);
 export default (validity: number): Uint8Array => {
-  const buf = new DataView(new ArrayBuffer(4));
-  buf.setFloat32(0, validity, true);
-  return chunk(0x0003, new Uint8Array(buf.buffer), false);
+  floatArray[0] = validity;
+  return chunk(0x0003, new Uint8Array(floatArray.buffer), false);
 };

src/encoders/data/data-tracker-timestamp-chunk.ts

@@ -1,7 +1,7 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
+const buf = new DataView(new ArrayBuffer(8));
 export default (timestamp: bigint): Uint8Array => {
-  const buf = new DataView(new ArrayBuffer(8));
   buf.setBigUint64(0, BigInt(timestamp), true);
   return chunk(0x0006, new Uint8Array(buf.buffer), false);
 };

src/encoders/data/data-tracker-trgtpos-chunk.ts

@@ -1,11 +1,10 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
+const floatArray = new Float32Array(3);
 export default (x: number, y: number, z: number): Uint8Array => {
-  const buf = new DataView(new ArrayBuffer(12));
+  floatArray[0] = x;
+  floatArray[1] = y;
+  floatArray[2] = z;
 
-  buf.setFloat32(0, x, true);
-  buf.setFloat32(4, y, true);
-  buf.setFloat32(8, z, true);
-
-  return chunk(0x0005, new Uint8Array(buf.buffer), false);
+  return chunk(0x0005, new Uint8Array(floatArray.buffer), false);
 };

src/encoders/index.ts

@@ -1,21 +1,21 @@
-import Chunk from './chunk';
-import DataPacketChunk from './data/data-packet-chunk';
-import DataTrackerAccelChunk from './data/data-tracker-accel-chunk';
-import DataTrackerChunk from './data/data-tracker-chunk';
-import DataTrackerListChunk from './data/data-tracker-list-chunk';
-import DataTrackerOriChunk from './data/data-tracker-ori-chunk';
-import DataTrackerPosChunk from './data/data-tracker-pos-chunk';
-import DataTrackerSpeedChunk from './data/data-tracker-speed-chunk';
-import DataTrackerStatusChunk from './data/data-tracker-status-chunk';
-import DataTrackerTimestampChunk from './data/data-tracker-timestamp-chunk';
-import DataTrackerTrgtposChunk from './data/data-tracker-trgtpos-chunk';
-import PacketHeaderChunk from './packet-header-chunk';
+import Chunk from './chunk.js';
+import DataPacketChunk from './data/data-packet-chunk.js';
+import DataTrackerAccelChunk from './data/data-tracker-accel-chunk.js';
+import DataTrackerChunk from './data/data-tracker-chunk.js';
+import DataTrackerListChunk from './data/data-tracker-list-chunk.js';
+import DataTrackerOriChunk from './data/data-tracker-ori-chunk.js';
+import DataTrackerPosChunk from './data/data-tracker-pos-chunk.js';
+import DataTrackerSpeedChunk from './data/data-tracker-speed-chunk.js';
+import DataTrackerStatusChunk from './data/data-tracker-status-chunk.js';
+import DataTrackerTimestampChunk from './data/data-tracker-timestamp-chunk.js';
+import DataTrackerTrgtposChunk from './data/data-tracker-trgtpos-chunk.js';
+import PacketHeaderChunk from './packet-header-chunk.js';
 
-import InfoPacketChunk from './info/info-packet-chunk';
-import InfoSystemNameChunk from './info/info-system-name-chunk';
-import InfoTrackerChunk from './info/info-tracker-chunk';
-import InfoTrackerListChunk from './info/info-tracker-list-chunk';
-import InfoTrackerNameChunk from './info/info-tracker-name-chunk';
+import InfoPacketChunk from './info/info-packet-chunk.js';
+import InfoSystemNameChunk from './info/info-system-name-chunk.js';
+import InfoTrackerChunk from './info/info-tracker-chunk.js';
+import InfoTrackerListChunk from './info/info-tracker-list-chunk.js';
+import InfoTrackerNameChunk from './info/info-tracker-name-chunk.js';
 
 export const Encoders = {
   DataPacketChunk,

src/encoders/info/info-packet-chunk.ts

@@ -1,4 +1,4 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
 export default (
   packetHeaderChunk: Uint8Array,

src/encoders/info/info-system-name-chunk.ts

@@ -1,3 +1,3 @@
-import chunk from '../chunk';
-
-export default (systemName: string): Uint8Array => chunk(0x0001, new TextEncoder().encode(systemName), false);
+import chunk from '../chunk.js';
+const nameEncoder = new TextEncoder();
+export default (systemName: string): Uint8Array => chunk(0x0001, nameEncoder.encode(systemName), false);

src/encoders/info/info-tracker-chunk.ts

@@ -1,4 +1,4 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
 export default (trackerId: number, trackerNameChunk: Uint8Array): Uint8Array =>
   chunk(trackerId, trackerNameChunk, true);

src/encoders/info/info-tracker-list-chunk.ts

@@ -1,4 +1,4 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
 export default (trackerChunks: Uint8Array[]): Uint8Array => {
   let trackerChunksTotalLength = 0;

src/encoders/info/info-tracker-name-chunk.ts

@@ -1,3 +1,4 @@
-import chunk from '../chunk';
+import chunk from '../chunk.js';
 
-export default (trackerName: string) => chunk(0x0000, new TextEncoder().encode(trackerName), false);
+const nameEncoder = new TextEncoder();
+export default (trackerName: string) => chunk(0x0000, nameEncoder.encode(trackerName), false);

src/encoders/packet-header-chunk.ts

@@ -1,5 +1,6 @@
-import chunk from './chunk';
+import chunk from './chunk.js';
 
+const packetHeader = new DataView(new ArrayBuffer(12));
 export default (
   timestamp: bigint,
   versionHigh: number,
@@ -33,7 +34,6 @@ export default (
     throw new Error('frame packet count must be >= 0 and <= 255');
   }
 
-  const packetHeader = new DataView(new ArrayBuffer(12));
   packetHeader.setBigUint64(0, BigInt(timestamp), true);
   packetHeader.setUint8(8, versionHigh);
   packetHeader.setUint8(9, versionLow);

src/index.ts

@@ -1,5 +1,5 @@
-export { Decoder } from './decoder';
-export * from './decoders';
-export { Encoder } from './encoder';
-export * from './encoders';
-export * from './models';
+export { Decoder } from './decoder.js';
+export * from './decoders/index.js';
+export { Encoder } from './encoder.js';
+export * from './encoders/index.js';
+export * from './models/index.js';

src/models/data/data-packet-chunk.ts

@@ -1,6 +1,6 @@
-import { Chunk } from '../chunk';
-import { PacketHeaderChunk } from '../packet-header-chunk';
-import { DataTrackerListChunk } from './data-tracker-list-chunk';
+import type { Chunk } from '../chunk.js';
+import type { PacketHeaderChunk } from '../packet-header-chunk.js';
+import type { DataTrackerListChunk } from './data-tracker-list-chunk.js';
 
 export interface DataPacketChunkData {
   packetHeader?: PacketHeaderChunk;

src/models/data/data-tracker-chunk.ts

@@ -1,7 +1,7 @@
-import { Chunk } from '../chunk';
-import { DataTrackerStatusChunk } from './data-tracker-status-chunk';
-import { DataTrackerTimestampChunk } from './data-tracker-timestamp-chunk';
-import { DataTrackerXYZChunk } from './data-tracker-xyz-chunk';
+import type { Chunk } from '../chunk.js';
+import type { DataTrackerStatusChunk } from './data-tracker-status-chunk.js';
+import type { DataTrackerTimestampChunk } from './data-tracker-timestamp-chunk.js';
+import type { DataTrackerXYZChunk } from './data-tracker-xyz-chunk.js';
 
 export interface DataTrackerChunkData {
   pos?: DataTrackerXYZChunk;

src/models/data/data-tracker-list-chunk.ts

@@ -1,5 +1,5 @@
-import { Chunk } from '../chunk';
-import { DataTrackerChunk } from './data-tracker-chunk';
+import type { Chunk } from '../chunk.js';
+import type { DataTrackerChunk } from './data-tracker-chunk.js';
 
 export interface DataTrackerListChunkData {
   trackers: DataTrackerChunk[];

src/models/data/data-tracker-status-chunk.ts

@@ -1,4 +1,4 @@
-import { Chunk } from '../chunk';
+import type { Chunk } from '../chunk.js';
 
 export interface DataTrackerStatusChunkData {
   validity: number;

src/models/data/data-tracker-timestamp-chunk.ts

@@ -1,4 +1,4 @@
-import { Chunk } from '../chunk';
+import type { Chunk } from '../chunk.js';
 
 export interface DataTrackerTimestampChunkData {
   timestamp: bigint;

src/models/data/data-tracker-xyz-chunk.ts

@@ -1,4 +1,4 @@
-import { Chunk } from '../chunk';
+import type { Chunk } from '../chunk.js';
 
 export interface DataTrackerXYZChunkData {
   x: number;

src/models/index.ts

@@ -1,11 +1,11 @@
-export * from './chunk';
-export * from './data/data-packet-chunk';
-export * from './data/data-tracker-chunk';
-export * from './data/data-tracker-list-chunk';
-export * from './info/info-packet-chunk';
-export * from './info/info-system-name-chunk';
-export * from './info/info-tracker-chunk';
-export * from './info/info-tracker-list-chunk';
-export * from './info/info-tracker-name-chunk';
-export * from './packet-header-chunk';
-export * from './tracker';
+export * from './chunk.js';
+export * from './data/data-packet-chunk.js';
+export * from './data/data-tracker-chunk.js';
+export * from './data/data-tracker-list-chunk.js';
+export * from './info/info-packet-chunk.js';
+export * from './info/info-system-name-chunk.js';
+export * from './info/info-tracker-chunk.js';
+export * from './info/info-tracker-list-chunk.js';
+export * from './info/info-tracker-name-chunk.js';
+export * from './packet-header-chunk.js';
+export * from './tracker.js';

src/models/info/info-packet-chunk.ts

@@ -1,7 +1,7 @@
-import { Chunk } from '../chunk';
-import { PacketHeaderChunk } from '../packet-header-chunk';
-import { InfoSystemNameChunk } from './info-system-name-chunk';
-import { InfoTrackerListChunk } from './info-tracker-list-chunk';
+import type { Chunk } from '../chunk.js';
+import type { PacketHeaderChunk } from '../packet-header-chunk.js';
+import type { InfoSystemNameChunk } from './info-system-name-chunk.js';
+import type { InfoTrackerListChunk } from './info-tracker-list-chunk.js';
 
 export interface InfoPacketChunkData {
   packetHeader?: PacketHeaderChunk;

src/models/info/info-system-name-chunk.ts

@@ -1,4 +1,4 @@
-import { Chunk } from '../chunk';
+import type { Chunk } from '../chunk.js';
 
 export interface InfoSystemNameChunkData {
   systemName: string;

src/models/info/info-tracker-chunk.ts

@@ -1,5 +1,5 @@
-import { Chunk } from '../chunk';
-import { InfoTrackerNameChunk } from './info-tracker-name-chunk';
+import type { Chunk } from '../chunk.js';
+import type { InfoTrackerNameChunk } from './info-tracker-name-chunk.js';
 
 export interface InfoTrackerChunkData {
   trackerName: InfoTrackerNameChunk;

src/models/info/info-tracker-list-chunk.ts

@@ -1,5 +1,5 @@
-import { Chunk } from '../chunk';
-import { InfoTrackerChunk } from './info-tracker-chunk';
+import type { Chunk } from '../chunk.js';
+import type { InfoTrackerChunk } from './info-tracker-chunk.js';
 
 export interface InfoTrackerListChunkData {
   trackers: InfoTrackerChunk[];

src/models/info/info-tracker-name-chunk.ts

@@ -1,4 +1,4 @@
-import { Chunk } from '../chunk';
+import type { Chunk } from '../chunk.js';
 
 export interface InfoTrackerNameChunkData {
   trackerName: string;

src/models/packet-header-chunk.ts

@@ -1,4 +1,4 @@
-import { Chunk } from './chunk';
+import type { Chunk } from './chunk.js';
 
 export interface PacketHeaderChunkData {
   packetTimestamp: bigint;

src/models/tracker.ts

@@ -1,15 +1,15 @@
-import dataTrackerAccelChunk from '../encoders/data/data-tracker-accel-chunk';
-import dataTrackerChunk from '../encoders/data/data-tracker-chunk';
-import dataTrackerOriChunk from '../encoders/data/data-tracker-ori-chunk';
-import dataTrackerPosChunk from '../encoders/data/data-tracker-pos-chunk';
-import dataTrackerSpeedChunk from '../encoders/data/data-tracker-speed-chunk';
-import dataTrackerStatusChunk from '../encoders/data/data-tracker-status-chunk';
-import dataTrackerTimestampChunk from '../encoders/data/data-tracker-timestamp-chunk';
-import dataTrackerTrgtposChunk from '../encoders/data/data-tracker-trgtpos-chunk';
-import infoTrackerChunk from '../encoders/info/info-tracker-chunk';
-import infoTrackerNameChunk from '../encoders/info/info-tracker-name-chunk';
-import { DataTrackerChunk } from './data/data-tracker-chunk';
-import { InfoTrackerChunk } from './info/info-tracker-chunk';
+import dataTrackerAccelChunk from '../encoders/data/data-tracker-accel-chunk.js';
+import dataTrackerChunk from '../encoders/data/data-tracker-chunk.js';
+import dataTrackerOriChunk from '../encoders/data/data-tracker-ori-chunk.js';
+import dataTrackerPosChunk from '../encoders/data/data-tracker-pos-chunk.js';
+import dataTrackerSpeedChunk from '../encoders/data/data-tracker-speed-chunk.js';
+import dataTrackerStatusChunk from '../encoders/data/data-tracker-status-chunk.js';
+import dataTrackerTimestampChunk from '../encoders/data/data-tracker-timestamp-chunk.js';
+import dataTrackerTrgtposChunk from '../encoders/data/data-tracker-trgtpos-chunk.js';
+import infoTrackerChunk from '../encoders/info/info-tracker-chunk.js';
+import infoTrackerNameChunk from '../encoders/info/info-tracker-name-chunk.js';
+import type { DataTrackerChunk } from './data/data-tracker-chunk.js';
+import type { InfoTrackerChunk } from './info/info-tracker-chunk.js';
 
 export type XYZData = {
   x: number;

tests/decode.test.mjs

@@ -0,0 +1,647 @@
+import { Decoders } from '@jwetzell/posistagenet';
+import { deepEqual, throws } from 'assert';
+import { describe, it } from 'node:test';
+
+const goodTests = [
+  {
+    description: 'DataTrackerPosChunk',
+    bytes: new Uint8Array([0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+        header: { dataLen: 12, id: 0, hasSubchunks: false },
+      },
+      data: {
+        x: 1.0,
+        y: 2.0,
+        z: 3.0,
+      },
+    },
+    decoder: Decoders.DataTrackerXYZChunk,
+  },
+  {
+    description: 'DataTrackerSpeedChunk',
+    bytes: new Uint8Array([1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+        header: { dataLen: 12, id: 1, hasSubchunks: false },
+      },
+      data: {
+        x: 1.0,
+        y: 2.0,
+        z: 3.0,
+      },
+    },
+    decoder: Decoders.DataTrackerXYZChunk,
+  },
+  {
+    description: 'DataTrackerOriChunk',
+    bytes: new Uint8Array([2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+        header: { dataLen: 12, id: 2, hasSubchunks: false },
+      },
+      data: {
+        x: 1.0,
+        y: 2.0,
+        z: 3.0,
+      },
+    },
+    decoder: Decoders.DataTrackerXYZChunk,
+  },
+  {
+    description: 'DataTrackerStatusChunk',
+    bytes: new Uint8Array([3, 0, 4, 0, 0, 0, 128, 63]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([0, 0, 128, 63]),
+        header: { dataLen: 4, id: 3, hasSubchunks: false },
+      },
+      data: {
+        validity: 1.0,
+      },
+    },
+    decoder: Decoders.DataTrackerStatusChunk,
+  },
+  {
+    description: 'DataTrackerAccelChunk',
+    bytes: new Uint8Array([4, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+        header: { dataLen: 12, id: 4, hasSubchunks: false },
+      },
+      data: {
+        x: 1.0,
+        y: 2.0,
+        z: 3.0,
+      },
+    },
+    decoder: Decoders.DataTrackerXYZChunk,
+  },
+  {
+    description: 'DataTrackerTrgtPosChunk',
+    bytes: new Uint8Array([5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+        header: { dataLen: 12, id: 5, hasSubchunks: false },
+      },
+      data: {
+        x: 1.0,
+        y: 2.0,
+        z: 3.0,
+      },
+    },
+    decoder: Decoders.DataTrackerXYZChunk,
+  },
+  {
+    description: 'DataTrackerTimestampChunk',
+    bytes: new Uint8Array([6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([210, 2, 150, 73, 0, 0, 0, 0]),
+        header: { dataLen: 8, id: 6, hasSubchunks: false },
+      },
+      data: {
+        timestamp: 1234567890n,
+      },
+    },
+    decoder: Decoders.DataTrackerTimestampChunk,
+  },
+  {
+    description: 'DataTrackerChunk',
+    bytes: new Uint8Array([
+      1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0,
+      0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0, 0, 0,
+      128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8, 0, 210, 2,
+      150, 73, 0, 0, 0, 0,
+    ]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([
+          0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64,
+          2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0, 0, 0, 128, 63,
+          0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8, 0, 210, 2, 150, 73,
+          0, 0, 0, 0,
+        ]),
+        header: { dataLen: 100, id: 1, hasSubchunks: true },
+      },
+      data: {
+        pos: {
+          chunk: {
+            chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+            header: { dataLen: 12, id: 0, hasSubchunks: false },
+          },
+          data: {
+            x: 1.0,
+            y: 2.0,
+            z: 3.0,
+          },
+        },
+        speed: {
+          chunk: {
+            chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+            header: { dataLen: 12, id: 1, hasSubchunks: false },
+          },
+          data: {
+            x: 1.0,
+            y: 2.0,
+            z: 3.0,
+          },
+        },
+        ori: {
+          chunk: {
+            chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+            header: { dataLen: 12, id: 2, hasSubchunks: false },
+          },
+          data: {
+            x: 1.0,
+            y: 2.0,
+            z: 3.0,
+          },
+        },
+        status: {
+          chunk: {
+            chunkData: new Uint8Array([0, 0, 128, 63]),
+            header: { dataLen: 4, id: 3, hasSubchunks: false },
+          },
+          data: {
+            validity: 1.0,
+          },
+        },
+        accel: {
+          chunk: {
+            chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+            header: { dataLen: 12, id: 4, hasSubchunks: false },
+          },
+          data: {
+            x: 1.0,
+            y: 2.0,
+            z: 3.0,
+          },
+        },
+        trgtpos: {
+          chunk: {
+            chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+            header: { dataLen: 12, id: 5, hasSubchunks: false },
+          },
+          data: {
+            x: 1.0,
+            y: 2.0,
+            z: 3.0,
+          },
+        },
+        timestamp: {
+          chunk: {
+            chunkData: new Uint8Array([210, 2, 150, 73, 0, 0, 0, 0]),
+            header: { dataLen: 8, id: 6, hasSubchunks: false },
+          },
+          data: {
+            timestamp: 1234567890n,
+          },
+        },
+      },
+    },
+    decoder: Decoders.DataTrackerChunk,
+  },
+  {
+    description: 'DataTrackerListChunk',
+    bytes: new Uint8Array([
+      1, 0, 104, 128, 1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63,
+      0, 0, 0, 64, 0, 0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0,
+      12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8,
+      0, 210, 2, 150, 73, 0, 0, 0, 0,
+    ]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([
+          1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0,
+          64, 0, 0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12,
+          0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8,
+          0, 210, 2, 150, 73, 0, 0, 0, 0,
+        ]),
+        header: { dataLen: 104, id: 1, hasSubchunks: true },
+      },
+      data: {
+        trackers: [
+          {
+            chunk: {
+              chunkData: new Uint8Array([
+                0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0,
+                64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0,
+                0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0,
+                8, 0, 210, 2, 150, 73, 0, 0, 0, 0,
+              ]),
+              header: { dataLen: 100, id: 1, hasSubchunks: true },
+            },
+            data: {
+              pos: {
+                chunk: {
+                  chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                  header: { dataLen: 12, id: 0, hasSubchunks: false },
+                },
+                data: {
+                  x: 1.0,
+                  y: 2.0,
+                  z: 3.0,
+                },
+              },
+              speed: {
+                chunk: {
+                  chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                  header: { dataLen: 12, id: 1, hasSubchunks: false },
+                },
+                data: {
+                  x: 1.0,
+                  y: 2.0,
+                  z: 3.0,
+                },
+              },
+              ori: {
+                chunk: {
+                  chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                  header: { dataLen: 12, id: 2, hasSubchunks: false },
+                },
+                data: {
+                  x: 1.0,
+                  y: 2.0,
+                  z: 3.0,
+                },
+              },
+              status: {
+                chunk: {
+                  chunkData: new Uint8Array([0, 0, 128, 63]),
+                  header: { dataLen: 4, id: 3, hasSubchunks: false },
+                },
+                data: {
+                  validity: 1.0,
+                },
+              },
+              accel: {
+                chunk: {
+                  chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                  header: { dataLen: 12, id: 4, hasSubchunks: false },
+                },
+                data: {
+                  x: 1.0,
+                  y: 2.0,
+                  z: 3.0,
+                },
+              },
+              trgtpos: {
+                chunk: {
+                  chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                  header: { dataLen: 12, id: 5, hasSubchunks: false },
+                },
+                data: {
+                  x: 1.0,
+                  y: 2.0,
+                  z: 3.0,
+                },
+              },
+              timestamp: {
+                chunk: {
+                  chunkData: new Uint8Array([210, 2, 150, 73, 0, 0, 0, 0]),
+                  header: { dataLen: 8, id: 6, hasSubchunks: false },
+                },
+                data: {
+                  timestamp: 1234567890n,
+                },
+              },
+            },
+          },
+        ],
+      },
+    },
+    decoder: Decoders.DataTrackerListChunk,
+  },
+  {
+    description: 'DataPacketChunk',
+    bytes: new Uint8Array([
+      85, 103, 124, 128, 0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123, 1, 0, 104, 128, 1, 0, 100, 128, 0, 0,
+      12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 2, 0, 12,
+      0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64,
+      0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0,
+    ]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([
+          0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123, 1, 0, 104, 128, 1, 0, 100, 128, 0, 0, 12, 0, 0, 0,
+          128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 2, 0, 12, 0, 0, 0,
+          128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0,
+          64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0,
+        ]),
+        header: { dataLen: 124, id: 26453, hasSubchunks: true },
+      },
+      data: {
+        packetHeader: {
+          chunk: {
+            chunkData: new Uint8Array([210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123]),
+            header: { dataLen: 12, id: 0, hasSubchunks: false },
+          },
+          data: {
+            packetTimestamp: 1234567890n,
+            versionHigh: 2,
+            versionLow: 3,
+            frameId: 1,
+            framePacketCount: 123,
+          },
+        },
+        trackerList: {
+          chunk: {
+            chunkData: new Uint8Array([
+              1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0,
+              0, 64, 0, 0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4,
+              0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64,
+              6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0,
+            ]),
+            header: { dataLen: 104, id: 1, hasSubchunks: true },
+          },
+          data: {
+            trackers: [
+              {
+                chunk: {
+                  chunkData: new Uint8Array([
+                    0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0,
+                    0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0,
+                    12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64,
+                    64, 6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0,
+                  ]),
+                  header: { dataLen: 100, id: 1, hasSubchunks: true },
+                },
+                data: {
+                  pos: {
+                    chunk: {
+                      chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                      header: { dataLen: 12, id: 0, hasSubchunks: false },
+                    },
+                    data: {
+                      x: 1.0,
+                      y: 2.0,
+                      z: 3.0,
+                    },
+                  },
+                  speed: {
+                    chunk: {
+                      chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                      header: { dataLen: 12, id: 1, hasSubchunks: false },
+                    },
+                    data: {
+                      x: 1.0,
+                      y: 2.0,
+                      z: 3.0,
+                    },
+                  },
+                  ori: {
+                    chunk: {
+                      chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                      header: { dataLen: 12, id: 2, hasSubchunks: false },
+                    },
+                    data: {
+                      x: 1.0,
+                      y: 2.0,
+                      z: 3.0,
+                    },
+                  },
+                  status: {
+                    chunk: {
+                      chunkData: new Uint8Array([0, 0, 128, 63]),
+                      header: { dataLen: 4, id: 3, hasSubchunks: false },
+                    },
+                    data: {
+                      validity: 1.0,
+                    },
+                  },
+                  accel: {
+                    chunk: {
+                      chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                      header: { dataLen: 12, id: 4, hasSubchunks: false },
+                    },
+                    data: {
+                      x: 1.0,
+                      y: 2.0,
+                      z: 3.0,
+                    },
+                  },
+                  trgtpos: {
+                    chunk: {
+                      chunkData: new Uint8Array([0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+                      header: { dataLen: 12, id: 5, hasSubchunks: false },
+                    },
+                    data: {
+                      x: 1.0,
+                      y: 2.0,
+                      z: 3.0,
+                    },
+                  },
+                  timestamp: {
+                    chunk: {
+                      chunkData: new Uint8Array([210, 2, 150, 73, 0, 0, 0, 0]),
+                      header: { dataLen: 8, id: 6, hasSubchunks: false },
+                    },
+                    data: {
+                      timestamp: 1234567890n,
+                    },
+                  },
+                },
+              },
+            ],
+          },
+        },
+      },
+    },
+    decoder: Decoders.DataPacketChunk,
+  },
+  {
+    description: 'InfoTrackerNameChunk',
+    bytes: new Uint8Array([0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([84, 114, 97, 99, 107, 101, 114, 32, 49]),
+        header: { dataLen: 9, id: 0, hasSubchunks: false },
+      },
+      data: {
+        trackerName: 'Tracker 1',
+      },
+    },
+    decoder: Decoders.InfoTrackerNameChunk,
+  },
+  {
+    description: 'InfoSystemNameChunk',
+    bytes: new Uint8Array([1, 0, 10, 0, 80, 83, 78, 32, 83, 101, 114, 118, 101, 114]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([80, 83, 78, 32, 83, 101, 114, 118, 101, 114]),
+        header: { dataLen: 10, id: 1, hasSubchunks: false },
+      },
+      data: {
+        systemName: 'PSN Server',
+      },
+    },
+    decoder: Decoders.InfoSystemNameChunk,
+  },
+  {
+    description: 'InfoTrackerChunk',
+    bytes: new Uint8Array([1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+        header: { dataLen: 13, id: 1, hasSubchunks: true },
+      },
+      data: {
+        trackerName: {
+          chunk: {
+            chunkData: new Uint8Array([84, 114, 97, 99, 107, 101, 114, 32, 49]),
+            header: { dataLen: 9, id: 0, hasSubchunks: false },
+          },
+          data: {
+            trackerName: 'Tracker 1',
+          },
+        },
+      },
+    },
+    decoder: Decoders.InfoTrackerChunk,
+  },
+  {
+    description: 'InfoTrackerListChunk',
+    bytes: new Uint8Array([2, 0, 17, 128, 1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+        header: { dataLen: 17, id: 2, hasSubchunks: true },
+      },
+      data: {
+        trackers: [
+          {
+            chunk: {
+              chunkData: new Uint8Array([0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+              header: { dataLen: 13, id: 1, hasSubchunks: true },
+            },
+            data: {
+              trackerName: {
+                chunk: {
+                  chunkData: new Uint8Array([84, 114, 97, 99, 107, 101, 114, 32, 49]),
+                  header: { dataLen: 9, id: 0, hasSubchunks: false },
+                },
+                data: {
+                  trackerName: 'Tracker 1',
+                },
+              },
+            },
+          },
+        ],
+      },
+    },
+    decoder: Decoders.InfoTrackerListChunk,
+  },
+  {
+    description: 'PacketHeaderChunk',
+    bytes: new Uint8Array([0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123]),
+        header: { dataLen: 12, id: 0, hasSubchunks: false },
+      },
+      data: {
+        packetTimestamp: 1234567890n,
+        versionHigh: 2,
+        versionLow: 3,
+        frameId: 1,
+        framePacketCount: 123,
+      },
+    },
+    decoder: Decoders.PacketHeaderChunk,
+  },
+  {
+    description: 'InfoPacketChunk',
+    bytes: new Uint8Array([
+      86, 103, 51, 128, 0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123, 1, 0, 10, 0, 80, 83, 78, 32, 83, 101,
+      114, 118, 101, 114, 2, 0, 17, 128, 1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49,
+    ]),
+    expected: {
+      chunk: {
+        chunkData: new Uint8Array([
+          0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123, 1, 0, 10, 0, 80, 83, 78, 32, 83, 101, 114, 118, 101,
+          114, 2, 0, 17, 128, 1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49,
+        ]),
+        header: { dataLen: 51, id: 26454, hasSubchunks: true },
+      },
+      data: {
+        packetHeader: {
+          chunk: {
+            chunkData: new Uint8Array([210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123]),
+            header: { dataLen: 12, id: 0, hasSubchunks: false },
+          },
+          data: {
+            packetTimestamp: 1234567890n,
+            versionHigh: 2,
+            versionLow: 3,
+            frameId: 1,
+            framePacketCount: 123,
+          },
+        },
+        systemName: {
+          chunk: {
+            chunkData: new Uint8Array([80, 83, 78, 32, 83, 101, 114, 118, 101, 114]),
+            header: { dataLen: 10, id: 1, hasSubchunks: false },
+          },
+          data: {
+            systemName: 'PSN Server',
+          },
+        },
+        trackerList: {
+          chunk: {
+            chunkData: new Uint8Array([1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+            header: { dataLen: 17, id: 2, hasSubchunks: true },
+          },
+          data: {
+            trackers: [
+              {
+                chunk: {
+                  chunkData: new Uint8Array([0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+                  header: { dataLen: 13, id: 1, hasSubchunks: true },
+                },
+                data: {
+                  trackerName: {
+                    chunk: {
+                      chunkData: new Uint8Array([84, 114, 97, 99, 107, 101, 114, 32, 49]),
+                      header: { dataLen: 9, id: 0, hasSubchunks: false },
+                    },
+                    data: {
+                      trackerName: 'Tracker 1',
+                    },
+                  },
+                },
+              },
+            ],
+          },
+        },
+      },
+    },
+    decoder: Decoders.InfoPacketChunk,
+  },
+];
+
+describe('PSN Bytes Decoding', () => {
+  goodTests.forEach((bytesTest) => {
+    it(bytesTest.description, () => {
+      const decoded = bytesTest.decoder(bytesTest.bytes);
+      deepEqual(decoded, bytesTest.expected);
+    });
+  });
+});
+
+// TODO(jwetzell): add error tests
+const badTests = [];
+describe('PSN Bytes Decoding Throws', () => {
+  badTests.forEach((bytesTest) => {
+    it(bytesTest.description, () => {
+      throws(() => {
+        bytesTest.decoder(bytesTest.bytes);
+      }, bytesTest.throwsMessage);
+    });
+  });
+});

tests/encode.test.mjs

@@ -0,0 +1,152 @@
+import { Encoders } from '@jwetzell/posistagenet';
+import { deepEqual, throws } from 'assert';
+import { describe, it } from 'node:test';
+
+const goodTests = [
+  {
+    description: 'DataTrackerPosChunk',
+    expected: new Uint8Array([0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    bytes: Encoders.DataTrackerPosChunk(1.0, 2.0, 3.0),
+  },
+  {
+    description: 'DataTrackerSpeedChunk',
+    expected: new Uint8Array([1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    bytes: Encoders.DataTrackerSpeedChunk(1.0, 2.0, 3.0),
+  },
+  {
+    description: 'DataTrackerOriChunk',
+    expected: new Uint8Array([2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    bytes: Encoders.DataTrackerOriChunk(1.0, 2.0, 3.0),
+  },
+  {
+    description: 'DataTrackerStatusChunk',
+    expected: new Uint8Array([3, 0, 4, 0, 0, 0, 128, 63]),
+    bytes: Encoders.DataTrackerStatusChunk(1.0),
+  },
+  {
+    description: 'DataTrackerAccelChunk',
+    expected: new Uint8Array([4, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    bytes: Encoders.DataTrackerAccelChunk(1.0, 2.0, 3.0),
+  },
+  {
+    description: 'DataTrackerTrgtposChunk',
+    expected: new Uint8Array([5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+    bytes: Encoders.DataTrackerTrgtposChunk(1.0, 2.0, 3.0),
+  },
+  {
+    description: 'DataTrackerTimestampChunk',
+    expected: new Uint8Array([6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0]),
+    bytes: Encoders.DataTrackerTimestampChunk(1234567890n),
+  },
+  {
+    description: 'DataTrackerChunk',
+    expected: new Uint8Array([
+      1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0,
+      0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0, 0, 0,
+      128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8, 0, 210, 2,
+      150, 73, 0, 0, 0, 0,
+    ]),
+    bytes: Encoders.DataTrackerChunk(1, [
+      new Uint8Array([0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+      new Uint8Array([1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+      new Uint8Array([2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+      new Uint8Array([3, 0, 4, 0, 0, 0, 128, 63]),
+      new Uint8Array([4, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+      new Uint8Array([5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64]),
+      new Uint8Array([6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0]),
+    ]),
+  },
+  {
+    description: 'DataTrackerListChunk',
+    expected: new Uint8Array([
+      1, 0, 104, 128, 1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63,
+      0, 0, 0, 64, 0, 0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0,
+      12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8,
+      0, 210, 2, 150, 73, 0, 0, 0, 0,
+    ]),
+    bytes: Encoders.DataTrackerListChunk([
+      new Uint8Array([
+        1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64,
+        0, 0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0, 0,
+        0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8, 0, 210,
+        2, 150, 73, 0, 0, 0, 0,
+      ]),
+    ]),
+  },
+  {
+    description: 'DataPacketChunk',
+    expected: new Uint8Array([
+      85, 103, 124, 128, 0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123, 1, 0, 104, 128, 1, 0, 100, 128, 0, 0,
+      12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 2, 0, 12,
+      0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63, 4, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64,
+      0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6, 0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0,
+    ]),
+    bytes: Encoders.DataPacketChunk(
+      new Uint8Array([0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123]),
+      new Uint8Array([
+        1, 0, 104, 128, 1, 0, 100, 128, 0, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 1, 0, 12, 0, 0, 0, 128,
+        63, 0, 0, 0, 64, 0, 0, 64, 64, 2, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 3, 0, 4, 0, 0, 0, 128, 63,
+        4, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 5, 0, 12, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 6,
+        0, 8, 0, 210, 2, 150, 73, 0, 0, 0, 0,
+      ])
+    ),
+  },
+  {
+    description: 'InfoTrackerNameChunk',
+    expected: new Uint8Array([0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+    bytes: Encoders.InfoTrackerNameChunk('Tracker 1'),
+  },
+  {
+    description: 'InfoSystemNameChunk',
+    expected: new Uint8Array([1, 0, 10, 0, 80, 83, 78, 32, 83, 101, 114, 118, 101, 114]),
+    bytes: Encoders.InfoSystemNameChunk('PSN Server'),
+  },
+  {
+    description: 'InfoTrackerChunk',
+    expected: new Uint8Array([1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+    bytes: Encoders.InfoTrackerChunk(1, new Uint8Array([0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49])),
+  },
+  {
+    description: 'InfoTrackerListChunk',
+    expected: new Uint8Array([2, 0, 17, 128, 1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+    bytes: Encoders.InfoTrackerListChunk([
+      new Uint8Array([1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49]),
+    ]),
+  },
+  {
+    description: 'PacketHeaderChunk',
+    expected: new Uint8Array([0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123]),
+    bytes: Encoders.PacketHeaderChunk(1234567890n, 2, 3, 1, 123),
+  },
+  {
+    description: 'InfoPacketChunk',
+    expected: new Uint8Array([
+      86, 103, 51, 128, 0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123, 1, 0, 10, 0, 80, 83, 78, 32, 83, 101,
+      114, 118, 101, 114, 2, 0, 17, 128, 1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49,
+    ]),
+    bytes: Encoders.InfoPacketChunk(
+      new Uint8Array([0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123]),
+      new Uint8Array([1, 0, 10, 0, 80, 83, 78, 32, 83, 101, 114, 118, 101, 114]),
+      new Uint8Array([2, 0, 17, 128, 1, 0, 13, 128, 0, 0, 9, 0, 84, 114, 97, 99, 107, 101, 114, 32, 49])
+    ),
+  },
+];
+
+describe('PSN Message Encoding', () => {
+  goodTests.forEach((messageTest) => {
+    it(messageTest.description, () => {
+      deepEqual(messageTest.bytes, messageTest.expected);
+    });
+  });
+});
+
+//TODO(jwetzell): add tests that handle errors
+const badTests = [];
+
+describe('PSN Message Encoding Throws', () => {
+  badTests.forEach((messageTest) => {
+    it(messageTest.description, () => {
+      throws(() => {}, messageTest.throwsMessage);
+    });
+  });
+});

tsconfig.cjs.json

@@ -1,8 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "module": "CommonJS",
-    "declaration": false,
-    "outDir": "./dist/cjs"
-  }
-}

tsconfig.esm.json

@@ -1,8 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "module": "ESNext",
-    "declaration": false,
-    "outDir": "./dist/esm"
-  }
-}

tsconfig.json

@@ -1,12 +1,20 @@
 {
   "compilerOptions": {
-    "moduleResolution": "Node",
-    "lib": ["ESNext"],
-    "target": "ESNext",
+    "target": "esnext",
+    "lib": ["es2023"],
+    "moduleDetection": "force",
+    "module": "preserve",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "types": ["node"],
+    "strict": true,
+    "noUnusedLocals": true,
+    "declaration": true,
+    "emitDeclarationOnly": true,
     "esModuleInterop": true,
     "isolatedModules": true,
-    "rootDir": "src/",
-    "strict": true
+    "verbatimModuleSyntax": true,
+    "skipLibCheck": true
   },
-  "include": ["src/"]
+  "include": ["src"]
 }

tsconfig.types.json

@@ -1,8 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "emitDeclarationOnly": true,
-    "declaration": true,
-    "outDir": "./dist/types"
-  }
-}

tsdown.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'tsdown'
+
+export default defineConfig({
+  entry: 'src/index.ts',
+  exports: true,
+  format: {
+    esm: {},
+    cjs: {},
+  },
+})