chore: allow un-overwritable scripts and devDependencies in package.j…

…son (#1207)

Co-authored-by: Trivikram Kamat <16024985+trivikr@users.noreply.github.com>

scripts/generate-clients/copy-to-clients.js

@@ -43,12 +43,17 @@ const getOverwritablePredicate = packageName => pathName => {
  * from codegen, but maintain the newer dependency versions
  * in existing package.json
  */
-const mergeManifest = (fromContent, toContent) => {
+const mergeManifest = (fromContent = {}, toContent) => {
   const merged = {};
   const fromNames = Object.keys(fromContent);
   for (const name of fromNames) {
     if (typeof toContent[name] === "object") {
       merged[name] = mergeManifest(fromContent[name], toContent[name]);
+      if (name === "scripts" || name === "devDependencies") {
+        // Allow target package.json(toContent) has its own special script or
+        // dev dependencies that won't be overwritten in codegen
+        merged[name] = { ...toContent[name], ...merged[name] };
+      }
       if (name === "dependencies" || name === "devDependencies") {
         // Sort dependencies as done by lerna
         merged[name] = Object.fromEntries(Object.entries(merged[name]).sort());
@@ -62,6 +67,24 @@ const mergeManifest = (fromContent, toContent) => {
   return merged;
 };
 
+/**
+ * Remove "^" from the the version of dependencies on @aws-sdk packages.
+ * e.g. "@aws-sdk/config-resolver": "^1.0.0-gamma.0"
+ *      => "@aws-sdk/config-resolver": "1.0.0-gamma.0"
+ */
+const pinDependencies = manifest => {
+  const removeRangeVersion = ([name, version]) =>
+    name.indexOf("@aws-sdk/") === 0
+      ? [name, version.replace("^", "")]
+      : [name, version];
+  manifest.dependencies = Object.fromEntries(
+    Object.entries(manifest.dependencies).map(removeRangeVersion)
+  );
+  manifest.devDependencies = Object.fromEntries(
+    Object.entries(manifest.devDependencies).map(removeRangeVersion)
+  );
+};
+
 const copyToClients = async (sourceDir, destinationDir) => {
   for (const modelName of readdirSync(sourceDir)) {
     if (modelName === "source") continue;
@@ -90,6 +113,7 @@ const copyToClients = async (sourceDir, destinationDir) => {
           ? JSON.parse(readFileSync(destSubPath).toString())
           : {};
         const mergedManifest = mergeManifest(packageManifest, destManifest);
+        pinDependencies(mergedManifest);
         writeFileSync(
           destSubPath,
           JSON.stringify(mergedManifest, null, 2).concat(`\n`)