Updates

src/authutil.ts

@@ -0,0 +1,39 @@
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+
+export function configAuth(registryUrl: string) {
+  let npmrc: string = path.resolve(process.cwd(), '.npmrc');
+  let yarnrc: string = path.resolve(process.cwd(), '.yarnrc');
+
+  writeRegistryToFile(registryUrl, npmrc, 'NPM_TOKEN');
+  writeRegistryToFile(registryUrl, yarnrc, 'YARN_TOKEN');
+}
+
+function writeRegistryToFile(
+  registryUrl: string,
+  fileLocation: string,
+  authTokenName: string
+) {
+  let newContents = '';
+  if (fs.existsSync(fileLocation)) {
+    const curContents = fs.readFileSync(fileLocation, 'utf8');
+    curContents.split(os.EOL).forEach((line: string) => {
+      // Add current contents unless they are setting the registry
+      if (!line.startsWith('registry')) {
+        newContents += line + os.EOL;
+      }
+    });
+  }
+  newContents +=
+    'registry=' +
+    registryUrl +
+    os.EOL +
+    'always-auth=true' +
+    os.EOL +
+    registryUrl.replace(/(^\w+:|^)/, '') +
+    ':_authToken=${' +
+    authTokenName +
+    '}';
+  fs.writeFileSync(fileLocation, newContents);
+}