Basic downloader

Author: a7ul

.eslintrc.js

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+module.exports = {
+  extends: ['plugin:prettier/recommended'],
+  parserOptions: { ecmaVersion: 2018, sourceType: 'module' },
+  overrides: [
+    {
+      files: ['*.ts'],
+      parser: '@typescript-eslint/parser',
+      extends: ['plugin:@typescript-eslint/recommended', 'prettier/@typescript-eslint', 'plugin:prettier/recommended'],
+      rules: {
+        '@typescript-eslint/camelcase': 0,
+        '@typescript-eslint/no-var-requires': 0,
+        '@typescript-eslint/no-explicit-any': 0,
+      },
+    },
+  ],
+};

.gitignore

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+node_modules
+*.log
+.vscode
+dist/
+out/

.prettierrc.js

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+module.exports = {
+  semi: true,
+  trailingComma: 'all',
+  singleQuote: true,
+  printWidth: 120,
+  tabWidth: 2,
+};

package.json

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+{
+  "name": "nodegui-qt-installer",
+  "version": "1.0.0",
+  "description": "A minimal qt installer for nodegui",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "atulanand94@gmail.com",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/fs-extra": "^8.0.1",
+    "@types/node-fetch": "^2.5.4",
+    "@types/progress": "^2.0.3",
+    "@typescript-eslint/eslint-plugin": "^2.19.0",
+    "@typescript-eslint/parser": "^2.19.0",
+    "eslint": "^6.8.0",
+    "eslint-config-prettier": "^6.10.0",
+    "eslint-plugin-prettier": "^3.1.2",
+    "prettier": "^1.19.1",
+    "typescript": "^3.7.5"
+  },
+  "dependencies": {
+    "7zip-min": "^1.1.1",
+    "fs-extra": "^8.1.0",
+    "node-fetch": "^2.6.0",
+    "progress": "^2.0.3"
+  }
+}

src/index.ts

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+import fetch from 'node-fetch';
+import util from 'util';
+import fs from 'fs';
+import path from 'path';
+import stream from 'stream';
+import { mkdirp } from 'fs-extra';
+import Progress from 'progress';
+
+const streamPipeline = util.promisify(stream.pipeline);
+
+function progressBar(tokens: string, total: number): stream.PassThrough {
+  const pt = new stream.PassThrough();
+  const bar = new Progress(tokens, { total });
+  pt.on('pipe', () => {
+    pt.on('data', chunk => bar.tick(chunk.length));
+  });
+  return pt;
+}
+
+const macOsLink =
+  'https://download.qt.io/online/qtsdkrepository/mac_x64/desktop/qt5_5130/qt.qt5.5130.clang_64/5.13.0-0-201906171525qtbase-MacOS-MacOS_10_13-Clang-MacOS-MacOS_10_13-X86_64.7z';
+
+type DownloadOptions = {
+  name?: string;
+};
+async function downloadArchive(archiveLink: string, outPath: string, options: DownloadOptions = {}): Promise<void> {
+  const name = options.name || '';
+  const response = await fetch(archiveLink);
+  if (!response.ok) {
+    throw new Error(`Error while downloading ${name}:${archiveLink}. ${response.statusText}`);
+  }
+  await mkdirp(path.dirname(outPath));
+  const total = parseInt(`${response.headers.get('content-length')}`, 10);
+  const totalInMb = (total / 1024 / 1024).toFixed(2);
+  await streamPipeline(
+    response.body,
+    progressBar(`Downloading ${name} [:bar] :percent of ${totalInMb}MB :etas`, total),
+    fs.createWriteStream(outPath),
+  );
+}
+
+const main = async (): Promise<void> => {
+  await downloadArchive(macOsLink, './out/download.7zip', { name: 'Qt for Mac' });
+};
+
+main()
+  .then(console.log)
+  .catch(console.error);

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "allowJs": true,
+    "checkJs": true,
+    "declaration": true,
+    "removeComments": true,
+    "strict": true,
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "outDir": "./dist",
+    "moduleResolution": "node",
+    "resolveJsonModule": true
+  },
+  "include": ["src"]
+}