initial commit

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/pull_request_template.md

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+## Describe your changes
+
+## Issue ticket number and link
+
+## Checklist before requesting a review
+- [ ] I have performed a self-review of my code
+- [ ] If it is a core feature, I have added thorough tests.

.github/workflows/pr-tests.yml

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+name: PR Tests
+
+on:
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.x]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm i -g pnpm
+    - run: pnpm i
+    - run: pnpm lint
+    - run: pnpm test

.github/workflows/publish-new-release.yml

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+name: Publish New Release
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  publish-npm:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20.x]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          registry-url: https://registry.npmjs.org/
+      - run: sudo apt-get install jq
+      - run: jq ".version=\"${GITHUB_REF#refs/*/}\"" package.json > package-new.json && mv package-new.json package.json
+      - run: cat package.json
+      - run: npm i -g pnpm
+      - run: pnpm i
+      - run: pnpm test
+      - run: pnpm publish-npm
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_PUBLISH_TOKEN}}

.gitignore

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+node_modules
+/lib

eslint.config.mjs

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+// @ts-check
+
+import eslint from '@eslint/js'
+import tseslint from 'typescript-eslint'
+import jest from 'eslint-plugin-jest'
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    files: ['test/**'],
+    ...jest.configs['flat/recommended']
+  },
+  {
+    ignores: [
+      'lib/'
+    ]
+  },
+  {
+    rules: {
+      semi: ['error', 'never'],
+      quotes: ['error', 'single']
+    }
+  }
+)

jest.config.js

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+/** @type {import('ts-jest').JestConfigWithTsJest} **/
+// eslint-disable-next-line no-undef
+module.exports = {
+  testEnvironment: 'node',
+  transform: {
+    '^.+.tsx?$': ['ts-jest', {}],
+  },
+}

package.json

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+{
+  "name": "nbody-gravity-simulation",
+  "version": "0.0.0",
+  "description": "Simulation of gravitational interactions of n bodies",
+  "author": "David Lounsbrough",
+  "license": "MIT",
+  "repository": "Codenough-LLC/nbody-gravity-simluation",
+  "main": "lib/index.js",
+  "module": "lib/index.esm.js",
+  "types": "lib/index.d.ts",
+  "engines": {
+    "node": ">=20"
+  },
+  "scripts": {
+    "clean": "rm -rf lib",
+    "build": "rollup -c",
+    "build-watch": "rollup -c --watch",
+    "publish-npm": "pnpm clean && pnpm build && npm publish",
+    "build-demo": "pnpm --prefix demo build",
+    "deploy-demo": "pnpm build-demo && gh-pages -d demo/build",
+    "lint": "eslint",
+    "test": "jest"
+  },
+  "keywords": [
+    "body",
+    "bodies",
+    "3-body",
+    "n-body",
+    "gravity",
+    "gravitational",
+    "orbit",
+    "orbital",
+    "simulation",
+    "physics",
+    "npm",
+    "package",
+    "typescript"
+  ],
+  "files": [
+    "/lib"
+  ],
+  "devDependencies": {
+    "@eslint/js": "^9.9.0",
+    "@rollup/plugin-typescript": "^11.1.6",
+    "@types/eslint__js": "^8.42.3",
+    "@types/jest": "^29.5.12",
+    "@types/node": "^22.5.0",
+    "eslint": "^9.9.0",
+    "eslint-plugin-jest": "^28.8.0",
+    "gh-pages": "^6.1.1",
+    "jest": "^29.7.0",
+    "rollup": "^4.21.0",
+    "ts-jest": "^29.2.4",
+    "ts-node": "^10.9.2",
+    "tslib": "^2.6.3",
+    "typescript": "^5.5.4",
+    "typescript-eslint": "^8.2.0",
+    "webpack": "^5.94.0"
+  }
+}