minor: just returns on linux

package.json

@@ -4,9 +4,6 @@
   "version": "0.0.0-development",
   "author": "Zach Bloomquist <zach@cypress.io>",
   "bugs": "https://github.com/cypress-io/get-windows-proxy/issues",
-  "os": [
-    "win32"
-  ],
   "config": {
     "pre-git": {
       "commit-msg": "simple",
@@ -83,7 +80,7 @@
     "sinon": "7.2.5"
   },
   "dependencies": {
-    "@cypress/registry-js": "1.3.2-patch27",
+    "@cypress/registry-js": "1.3.2-patch29",
     "debug": "4.1.1"
   }
 }

src/get-windows-proxy-spec.js

@@ -1,11 +1,16 @@
 const { expect } = require('chai')
+const os = require('os')
 const registry = require('@cypress/registry-js')
 const sinon = require('sinon')
 
 /* eslint-env mocha */
 const getWindowsProxy = require('.')
 
 context('getWindowsProxy', () => {
+  beforeEach(() => {
+    sinon.stub(os, 'platform').returns('win32')
+  })
+
   afterEach(() => {
     sinon.restore()
   })

src/index.js

@@ -1,15 +1,6 @@
 const debug = require('debug')('get-windows-proxy')
-let registry
-
-try {
-  registry = require('@cypress/registry-js')
-} catch (err) {
-  if (err.code !== 'MODULE_NOT_FOUND') {
-    throw err
-  }
-
-  debug('Could not load native extension for Windows registry access. The most likely reason is that your Node version has changed since installing. Try re-installing get-windows-proxy.')
-}
+const os = require('os')
+const registry = require('@cypress/registry-js')
 
 const findByName = (values, name) => {
   return values.find((value) => {
@@ -18,7 +9,7 @@ const findByName = (values, name) => {
 }
 
 module.exports = function getWindowsProxy () {
-  if (!registry) {
+  if (!registry || os.platform() !== 'win32') {
     return
   }