Another variant of dependencies management / installation procedure

Author: birdofpreyru

README.md

@@ -9,18 +9,17 @@ Install this package as
 $ npm install --save topcoder-react-utils
 ```
 
-You are done if you will use only components and utilities provided by this
-package. If you are to use configurations, to build or test your code, you must
-also install the peer dependencies:
+You are done if you only use components and utilities provided by this
+package. If you are to use configurations to build or test your code, you
+also need to install all development dependencies into your own package:
 ```
-$ npm install -g install-peerdeps
-$ install-peerdeps -od topcoder-react-utils
+$ adopt-dev-deps topcoder-react-utils
 ```
 
-Peer dependencies will be also stored as dev dependencies into `package.json` of
-your project, thus future invokations of `npm install` will automatically
-install them, and you won't need to use `install-peerdeps` as long as you don't
-update `topcoder-react-utils` version.
+Installed dev dependencies will be stored into your `package.json`, thus
+further invokations of `npm install` will automatically install them. You
+only need to call `adopt-dev-deps` again if you update
+`topcoder-react-utils` to a newer version.
 
 ### Configurations
 - [**Babel Configurations**](docs/babel-config.md) — Standard configurations

bin/adopt-dev-deps

@@ -0,0 +1,35 @@
+#!/usr/bin/env node
+
+/* Installs dev dependencies of this, or the specified package into another
+ * package. */
+
+const fs = require('fs');
+const path = require('path');
+const { spawnSync } = require('child_process');
+
+/* Locates and loads the "package.json" file of the donor package, from which we
+ * want to adopt dev dependencies. */
+const src = process.argv[2] || '..';
+
+let url = path.dirname(require.resolve(src));
+for (;;) {
+  const files = fs.readdirSync(url);
+  if (files.includes('package.json')) {
+    url = path.resolve(url, 'package.json');
+    break;
+  }
+  const up = path.resolve(url, '..');
+  if (url === up) throw new Error(`Cannot find the package ${src}`);
+  url = up;
+}
+
+const packageInfo = JSON.parse(fs.readFileSync(url));
+
+/* Gets the list of dev dependencies from the packageInfo. */
+let deps = Object.entries(packageInfo.devDependencies || {});
+deps = deps.map(x => `${x[0]}@${x[1]}`);
+
+/* And installs them as dev deps into the current working directory. */
+spawnSync('npm', ['install', '--save-dev'].concat(deps), {
+  stdio: 'inherit',
+});