Add spawn sync

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: npm
+    directory: '/'
+    schedule:
+      interval: daily
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      # Check for updates to GitHub Actions every weekday
+      interval: 'daily'

.github/workflows/main.yml

@@ -0,0 +1,22 @@
+name: CI
+on:
+  - push
+  - pull_request
+jobs:
+  test:
+    name: Node.js ${{ matrix.node-version }} ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        node: ['latest']
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2.4.1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: git config --global user.name "Github Actions"
+      - run: git config --global user.email "actions@users.noreply.github.com"
+      - run: npm ci
+      - run: npm run lint
+      - run: npm run test:engines

index.js

@@ -1,3 +1,4 @@
 module.exports = {
   spawn: require('./lib/spawn'),
+  spawnSync: require('./lib/spawnSync'),
 };

lib/constants.js → lib/env-path-key.js

@@ -12,7 +12,6 @@ function windowsPathKey() {
   return pathKey;
 }
 
-module.exports = {
-  PATH_KEY: isWindows ? windowsPathKey() : 'PATH',
-  NODE: isWindows ? 'node.exe' : 'node',
+module.exports = function () {
+  return isWindows ? windowsPathKey() : 'PATH';
 };

lib/spawn.js

@@ -1,15 +1,9 @@
-var assign = require('object-assign');
 var crossSpawn = require('cross-spawn-cb');
-var prepend = require('path-string-prepend');
 
-var envForInstallPath = require('./envForInstallPath');
-var PATH_KEY = require('./constants').PATH_KEY;
+var spawnOptions = require('./spawnOptions');
 
 function spawn(installPath, command, args, options, callback) {
-  // put the path to node and npm at the front and remove nvs
-  var env = envForInstallPath(process.env, installPath);
-  env[PATH_KEY] = prepend(env[PATH_KEY] || '', env.npm_config_binroot);
-  crossSpawn(command, args, assign({}, options, { cwd: process.cwd(), env: env, execPath: env.npm_node_execpath, path: env[PATH_KEY] }), callback);
+  crossSpawn(command, args, spawnOptions(installPath, options), callback);
 }
 
 module.exports = function spawnWrapper(installPath, command, args, options, callback) {

lib/spawnOptions.js

@@ -0,0 +1,32 @@
+var path = require('path');
+var assign = require('object-assign');
+var prepend = require('path-string-prepend');
+var NODE = process.platform === 'win32' ? 'node.exe' : 'node';
+var PATH_KEY = require('./env-path-key')();
+
+var isWindows = process.platform === 'win32';
+
+module.exports = function envForInstallPath(installPath, options) {
+  var processEnv = process.env;
+  var env = {};
+  env.npm_config_binroot = isWindows ? installPath : path.join(installPath, 'bin');
+  env.npm_config_root = isWindows ? installPath : path.join(installPath, 'lib');
+  env.npm_config_man = isWindows ? installPath : path.join(installPath, 'man');
+  env.npm_config_prefix = installPath;
+  env.npm_node_execpath = path.join(env.npm_config_binroot, NODE);
+
+  // copy the environment not for npm and skip case-insesitive additional paths
+  for (var key in processEnv) {
+    var lowerKey = key.toLowerCase();
+    if (lowerKey.indexOf('npm_') === 0) continue;
+    if (lowerKey === 'path' && key !== PATH_KEY) continue;
+    env[key] = processEnv[key];
+  }
+
+  // override node
+  if (env.NODE !== undefined) env.NODE = env.npm_node_execpath;
+
+  // put the path to node and npm at the front and remove nvs
+  env[PATH_KEY] = prepend(env[PATH_KEY] || '', env.npm_config_binroot);
+  return assign({}, options, { cwd: process.cwd(), env: env, execPath: env.npm_node_execpath, path: env[PATH_KEY] });
+};

lib/spawnSync.js

@@ -0,0 +1,6 @@
+var crossSpawn = require('cross-spawn-cb');
+var spawnOptions = require('./spawnOptions');
+
+module.exports = function spawnSync(installPath, command, args, options) {
+  return crossSpawn.sync(command, args, spawnOptions(installPath, options));
+};