Add option to pass Auth header

README.md

@@ -100,6 +100,11 @@ To install from a custom registry, use the `--registry` option:
 
 `install-peerdeps my-custom-package --registry https://registry.mycompany.com`.
 
+### Installing a Private Package
+To install a private npm package (either from npm or from a registry that uses an authorization header), use the auth option:
+
+`install-peerdeps my-private-package --auth your-npm-auth-token`
+
 ### Proxies
 To use this tool with a proxy, set the `HTTPS_PROXY` environment variable (if you're using a custom registry and it is only accessible over HTTP, though, set the `HTTP_PROXY` environment variable).
 

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "test": "jest",
     "lint": "eslint src/ --fix",
-    "build": "babel src --out-dir lib --ignore **/*.test.js",
+    "build": "babel src --out-dir lib --ignore *.test.js",
     "prepare": "npm run build"
   },
   "preferGlobal": true,

src/cli.js

@@ -53,6 +53,10 @@ program
     "--dry-run",
     "Do not install packages, but show the install command that will be run"
   )
+  .option(
+    "-a, --auth <token>",
+    "Provide an NPM authToken for private packages."
+  )
   .usage("<package>[@<version>], default version is 'latest'")
   .parse(process.argv);
 
@@ -132,7 +136,8 @@ const options = {
   onlyPeers: program.onlyPeers,
   silent: program.silent,
   packageManager,
-  dryRun: program.dryRun
+  dryRun: program.dryRun,
+  auth: program.auth
 };
 
 // Disabled this rule so we can hoist the callback
@@ -179,13 +184,13 @@ function installCb(err) {
     console.log(`${C.errorText} ${err.message}`);
     process.exit(1);
   }
-  let successMessage = `${C.successText} ${
-    packageName
-  } and its peerDeps were installed successfully.`;
+  let successMessage = `${
+    C.successText
+  } ${packageName} and its peerDeps were installed successfully.`;
   if (program.onlyPeers) {
-    successMessage = `${C.successText} The peerDeps of ${
-      packageName
-    } were installed successfully.`;
+    successMessage = `${
+      C.successText
+    } The peerDeps of ${packageName} were installed successfully.`;
   }
   console.log(successMessage);
   process.exit(0);

src/install-peerdeps.js

@@ -28,14 +28,19 @@ function encodePackageName(packageName) {
  * @param {string} requestInfo.registry - the URI of the registry on which the package is hosted
  * @returns {Promise<Object>} - a Promise which resolves to the JSON response from the registry
  */
-function getPackageData({ encodedPackageName, registry }) {
+function getPackageData({ encodedPackageName, registry, auth }) {
+  const requestHeaders = {};
+  if (auth) {
+    requestHeaders.Authorization = `Bearer ${auth}`;
+  }
   return request({
     uri: `${registry}/${encodedPackageName}`,
     resolveWithFullResponse: true,
     // When simple is true, all non-200 status codes throw an
     // error. However, we want to handle status code errors in
     // the .then(), so we make simple false.
-    simple: false
+    simple: false,
+    headers: requestHeaders
   }).then(response => {
     const { statusCode } = response;
     if (statusCode === 404) {
@@ -103,12 +108,13 @@ function installPeerDeps(
     dev,
     onlyPeers,
     silent,
-    dryRun
+    dryRun,
+    auth
   },
   cb
 ) {
   const encodedPackageName = encodePackageName(packageName);
-  getPackageData({ encodedPackageName, registry })
+  getPackageData({ encodedPackageName, registry, auth })
     // Catch before .then because the .then is so long
     .catch(err => cb(err))
     .then(data => {
@@ -206,9 +212,7 @@ function installPeerDeps(
       const commandString = `${packageManager} ${args.join(" ")}\n`;
       if (dryRun) {
         console.log(
-          `This command would have been run to install ${packageName}@${
-            version
-          }:`
+          `This command would have been run to install ${packageName}@${version}:`
         );
         console.log(commandString);
       } else {