feat: added monorepo handling of checkVersion

Author: kpervin

package-lock.json

@@ -30,27 +30,35 @@ function run () {
 }
 
 // Checks that the installed version ts-force matches this package
-async function checkVersion () {
+async function checkVersion(): Promise<void> {
+  let genVersion: string;
+  let tsforceVersion: string;
 
-  let tsforce: string;
-  let gen: string;
+  // Resolve ts-force-gen/package.json using Node's resolution algorithm.
   try {
-    gen = JSON.parse(fs.readFileSync(path.join(__dirname, '..', 'package.json'), 'utf8')).version;
-  } catch (e) {
-    console.warn('Failed to detect package version of ts-force-gen');
+    const genPackagePath = require.resolve('ts-force-gen/package.json', {paths: [process.cwd()]});
+    const genPackage = JSON.parse(fs.readFileSync(genPackagePath, 'utf8'));
+    genVersion = genPackage.version;
+  } catch (error) {
+    console.warn('Failed to detect package version of ts-force-gen using Node resolution:', error);
     return;
   }
 
-  for (let dir of fs.readdirSync('node_modules')) {
-    try {
-      if (dir === 'ts-force') {
-        let json = JSON.parse(fs.readFileSync(path.join('node_modules', dir, 'package.json'), 'utf8'));
-        tsforce = json.version;
-      }
-    } catch (err) { }
+  // Resolve ts-force/package.json using Node's resolution algorithm.
+  try {
+    const tsforcePackagePath = require.resolve('ts-force/package.json', {paths: [process.cwd()]});
+    const tsforcePackage = JSON.parse(fs.readFileSync(tsforcePackagePath, 'utf8'));
+    tsforceVersion = tsforcePackage.version;
+  } catch (error) {
+    console.warn('Failed to locate ts-force package using Node resolution:', error);
+    return;
   }
-  if (gen !== tsforce) {
-    console.warn(`The version of ts-force-gen (${gen}) should match ts-force (${tsforce}). It is recommended that you run \`npm install -D ts-force-gen@${tsforce}\` and regenerate classes`);
+
+  if (genVersion !== tsforceVersion) {
+    console.warn(
+        `The version of ts-force-gen (${genVersion}) should match ts-force (${tsforceVersion}). It is recommended that you run ` +
+        `npm install -D ts-force-gen@${tsforceVersion} and regenerate classes`
+    );
   }
 }