add node modules to repo

node_modules/env-paths/index.js

@@ -0,0 +1,69 @@
+'use strict';
+const path = require('path');
+const os = require('os');
+
+const homedir = os.homedir();
+const tmpdir = os.tmpdir();
+const env = process.env;
+
+const macos = name => {
+	const library = path.join(homedir, 'Library');
+
+	return {
+		data: path.join(library, 'Application Support', name),
+		config: path.join(library, 'Preferences', name),
+		cache: path.join(library, 'Caches', name),
+		log: path.join(library, 'Logs', name),
+		temp: path.join(tmpdir, name)
+	};
+};
+
+const windows = name => {
+	const appData = env.LOCALAPPDATA || path.join(homedir, 'AppData', 'Local');
+
+	return {
+		// data/config/cache/log are invented by me as Windows isn't opinionated about this
+		data: path.join(appData, name, 'Data'),
+		config: path.join(appData, name, 'Config'),
+		cache: path.join(appData, name, 'Cache'),
+		log: path.join(appData, name, 'Log'),
+		temp: path.join(tmpdir, name)
+	};
+};
+
+// https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
+const linux = name => {
+	const username = path.basename(homedir);
+
+	return {
+		data: path.join(env.XDG_DATA_HOME || path.join(homedir, '.local', 'share'), name),
+		config: path.join(env.XDG_CONFIG_HOME || path.join(homedir, '.config'), name),
+		cache: path.join(env.XDG_CACHE_HOME || path.join(homedir, '.cache'), name),
+		// https://wiki.debian.org/XDGBaseDirectorySpecification#state
+		log: path.join(env.XDG_STATE_HOME || path.join(homedir, '.local', 'state'), name),
+		temp: path.join(tmpdir, username, name)
+	};
+};
+
+module.exports = (name, opts) => {
+	if (typeof name !== 'string') {
+		throw new TypeError(`Expected string, got ${typeof name}`);
+	}
+
+	opts = Object.assign({suffix: 'nodejs'}, opts);
+
+	if (opts.suffix) {
+		// add suffix to prevent possible conflict with native apps
+		name += `-${opts.suffix}`;
+	}
+
+	if (process.platform === 'darwin') {
+		return macos(name);
+	}
+
+	if (process.platform === 'win32') {
+		return windows(name);
+	}
+
+	return linux(name);
+};