Initial files

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+      time: "02:00"
+    target-branch: "update-dependencies"
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "daily"
+      time: "02:00"
+    target-branch: "update-dependencies"
+    open-pull-requests-limit: 10

.github/workflows/dependabot-automerge.yml

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+name: Dependabot auto-merge
+on: pull_request_target
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor == 'dependabot[bot]' }}
+    steps:
+      - name: Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1.3.5
+        with:
+          github-token: "${{secrets.GITHUB_TOKEN}}"
+      - name: Enable auto-merge for Dependabot PRs
+        if: ${{steps.metadata.outputs.update-type == 'version-update:semver-patch'}}
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

.github/workflows/main.yml

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+name: CI
+on: [push]
+jobs:
+  build:
+    name: Build, lint, and test on Node ${{ matrix.node }} and ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        node: ['16.x']
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+
+      - name: Resolve caching
+        id: cache
+        if: ${{ github.ref_name != 'update-dependencies' && !startsWith(github.ref_name, 'dependabot/') }}
+        run: echo "npm_cache=yarn" >> $GITHUB_STATE
+
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+          cache: ${{ env.npm_cache }}
+
+      - name: Install dependencies
+        run: yarn
+
+      - name: Lint
+        run: yarn lint
+
+      - name: Test
+        run: yarn test --ci --coverage --maxWorkers=2
+
+      - name: Build
+        run: yarn build

.gitignore

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+*.log
+.DS_Store
+node_modules
+dist

.nvmrc

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+v16

LICENSE

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+MIT License
+
+Copyright (c) 2023 Vio
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# rollup-plugin-stats
+
+> **Warning**
+> Under active development
+
+[![](https://img.shields.io/npm/v/rollup-plugin-stats.svg)](https://www.npmjs.com/package/rollup-plugin-stats)
+![](https://img.shields.io/node/v/rollup-plugin-stats.svg)
+[![CI](https://github.com/vio/rollup-plugin-stats/actions/workflows/main.yml/badge.svg)](https://github.com/vio/rollup-plugin-stats/actions/workflows/main.yml)
+
+Output Rollup stats JSON file 
+
+## Install
+
+```shell
+npm install --dev rollup-plugin-stats
+```
+
+or
+
+```shell
+yarn add --dev rollup-plugin-stats
+```
+
+
+## Configure
+
+```js
+// rollup.config.js
+const { rollupStats } = require('rollup-plugin-stats');
+
+module.exports = {
+  plugins: [
+    // add it as the last plugin
+    rollupStats(),
+  ],
+};
+```

package.json

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+{
+  "name": "rollup-plugin-stats",
+  "version": "0.1.0",
+  "license": "MIT",
+  "private": false,
+  "author": {
+    "name": "Viorel Cojocaru",
+    "email": "vio@beanon.com",
+    "url": "https://beanon.com"
+  },
+  "main": "dist/index.js",
+  "typings": "dist/index.d.ts",
+  "files": [
+    "dist",
+    "src"
+  ],
+  "engines": {
+    "node": ">=16"
+  },
+  "scripts": {
+    "start": "tsdx watch",
+    "build": "tsdx build",
+    "test": "tsdx test --passWithNoTests",
+    "lint": "tsdx lint src",
+    "prepare": "tsdx build"
+  },
+  "husky": {
+    "hooks": {
+      "pre-commit": "tsdx lint"
+    }
+  },
+  "prettier": {
+    "printWidth": 80,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "es5"
+  },
+  "module": "dist/rollup-plugin-stats.esm.js",
+  "devDependencies": {
+    "husky": "^8.0.3",
+    "rollup": "^1.32.1",
+    "tsdx": "^0.14.1",
+    "tslib": "^2.5.0",
+    "typescript": "^5.0.4"
+  }
+}

src/index.ts

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+import { Plugin } from 'rollup';
+
+const NAME = 'rollupStats';
+
+interface rollupStatsOptions {
+  /**
+   * JSON file output fileName
+   * default: stats.json
+   */
+  fileName?: string;
+}
+
+export const rollupStats = (options: rollupStatsOptions = {}): Plugin => ({
+  name: NAME,
+  generateBundle(_, bundle) {
+    this.emitFile({
+      type: 'asset',
+      fileName: options?.fileName || 'stats.json',
+      source: JSON.stringify(bundle, null, 2),
+    });
+  },
+});

tsconfig.json

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+{
+  // see https://www.typescriptlang.org/tsconfig to better understand tsconfigs
+  "include": ["src", "types"],
+  "compilerOptions": {
+    "module": "esnext",
+    "lib": ["dom", "esnext"],
+    "importHelpers": true,
+    // output .d.ts declaration files for consumers
+    "declaration": true,
+    // output .js.map sourcemap files for consumers
+    "sourceMap": true,
+    // match output dir to input dir. e.g. dist/index instead of dist/src/index
+    "rootDir": "./src",
+    // stricter type-checking for stronger correctness. Recommended by TS
+    "strict": true,
+    // linter checks for common issues
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    // noUnused* overlap with @typescript-eslint/no-unused-vars, can disable if duplicative
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    // use Node's module resolution algorithm, instead of the legacy TS one
+    "moduleResolution": "node",
+    // transpile JSX to React.createElement
+    "jsx": "react",
+    // interop between ESM and CJS modules. Recommended by TS
+    "esModuleInterop": true,
+    // significant perf increase by skipping checking .d.ts files, particularly those in node_modules. Recommended by TS
+    "skipLibCheck": true,
+    // error out if import and file system have a casing mismatch. Recommended by TS
+    "forceConsistentCasingInFileNames": true,
+    // `tsdx build` ignores this option, but it is commonly used when type-checking separately with `tsc`
+    "noEmit": true,
+  }
+}