feat: validate @types packages before installing them

package.json

@@ -27,15 +27,20 @@
     "README.md"
   ],
   "devDependencies": {
+    "@npm/types": "^1.0.1",
     "@types/commander": "^2.12.2",
     "@types/jest": "^23.3.10",
     "@types/node": "^10.12.18",
+    "@types/node-fetch": "^2.1.2",
+    "@types/npm-registry-fetch": "^4.0.1",
+    "@types/npmlog": "^4.1.1",
     "jest": "^23.6.0",
     "ts-jest": "^23.10.5",
     "tslint": "^5.12.0",
     "typescript": "^3.2.2"
   },
   "dependencies": {
-    "commander": "^2.19.0"
+    "commander": "^2.19.0",
+    "npm-registry-fetch": "^3.8.0"
   }
 }

src/typac.ts

@@ -2,6 +2,8 @@ import * as fs from 'fs';
 import * as path from 'path';
 import * as programm from 'commander';
 import { spawnSync, SpawnSyncOptions } from 'child_process';
+import * as npmFetch from 'npm-registry-fetch';
+import * as npm from '@npm/types';
 import { typifyPackageName, installArguments, PackageManager } from './utils';
 
 const pckg = require('../package.json');
@@ -17,6 +19,8 @@ const useYarn = fs.existsSync(path.join(process.cwd(), 'yarn.lock'));
 programm
   .version(pckg.version)
   .usage('[options] package_name [package_name_1 ...]')
+  .option('-D, --dev') // alias
+  .option('-S, --save') // alias
   .option('-d, --dev', 'save all to devDependencies')
   .option('-s, --save', 'save all to dependencies')
   .parse(process.argv);
@@ -31,22 +35,49 @@ if (dev && save) {
   process.exit(1);
 }
 
-const manager = useYarn ? PackageManager.YARN : PackageManager.NPM;
+main().catch((err) => {
+  throw err;
+});
+async function main() {
+  const manager = useYarn ? PackageManager.YARN : PackageManager.NPM;
 
-const args = installArguments(manager, packages, !dev, dev);
-const argsTyped = installArguments(manager, packages.map((p) => typifyPackageName(p)), save, !save);
+  const typedPackages = (await Promise.all(packages
+  .map(typifyPackageName)
+  .map(async (p) => {
+    try {
+      const json = await npmFetch.json(p.replace(/\//g, '%2F')) as unknown as npm.Manifest;
+      const latestVersion = json['dist-tags'].latest;
+      if (json.versions[latestVersion].deprecated) {
+        return false;
+      }
+      return json.name;
+    } catch (err) {
+      if (err.statusCode !== 404) {
+        throw err;
+      }
+      return false;
+    }
+  })))
+  .filter(<T>(p: T | false): p is T => Boolean(p));
 
-const command = manager + ' ' + args.join(' ');
-const commandTyped = manager + ' ' + argsTyped.join(' ');
+  const args = installArguments(manager, packages, !dev, dev);
+  const argsTyped = installArguments(manager, typedPackages, save, !save);
 
-console.log('installing', packages.length, `package${packages.length > 1 ? 's' : ''} with`, useYarn ? 'yarn' : 'npm');
+  const command = manager + ' ' + args.join(' ');
+  const commandTyped = manager + ' ' + argsTyped.join(' ');
+  console.log('installing', packages.length, `package${packages.length > 1 ? 's' : ''} with`, useYarn ? 'yarn' : 'npm');
 
-const spawnParams: SpawnSyncOptions = {
-  stdio: 'inherit',
-  cwd: process.cwd()
-};
+  const spawnParams: SpawnSyncOptions = {
+    stdio: 'inherit',
+    cwd: process.cwd()
+  };
 
-console.log('running', command);
-spawnSync(manager, args, spawnParams);
-console.log('running', commandTyped);
-spawnSync(manager, argsTyped, spawnParams);
+  console.log('running', command);
+  spawnSync(manager, args, spawnParams);
+  if (typedPackages.length > 0) {
+    console.log('running', commandTyped);
+    spawnSync(manager, argsTyped, spawnParams);
+  } else {
+    console.log('no @types module found for requested packages');
+  }
+}

tsconfig.json

@@ -15,4 +15,4 @@
     "build",
     "tests"
   ]
-}
+}