if handler sizes are the same, comment "no changes"

Author: dphang

package.json

@@ -48,6 +48,7 @@
     "@sls-next/next-aws-cloudfront": "link:./packages/compat-layers/lambda-at-edge-compat",
     "@types/fs-extra": "^9.0.1",
     "@types/jest": "^26.0.23",
+    "@types/lodash": "^4.14.170",
     "@types/node": "^15.12.5",
     "@types/node-fetch": "^2.5.10",
     "@types/react": "^17.0.9",
@@ -121,6 +122,7 @@
   },
   "dependencies": {
     "opencollective-postinstall": "^2.0.3",
+    "lodash": "^4.17.21",
     "node-fetch": "^2.6.1"
   },
   "collective": {
@@ -137,6 +139,6 @@
   },
   "resolutions": {
     "which": "^2.0.1",
-    "lodash": "^4.17.19"
+    "lodash": "^4.17.21"
   }
 }

scripts/comment-handler-sizes.ts

@@ -3,6 +3,7 @@
 import fetch from "node-fetch";
 import { calculateHandlerSizes } from "./handler-size-utils";
 import { Octokit } from "@octokit/rest";
+import * as _ from "lodash";
 
 /**
  * Get sizes that were calculated from existing commit SHA
@@ -91,6 +92,11 @@ const main = async (): Promise<void> => {
   const newSizes: Record<string, any> = calculateHandlerSizes();
 
   let output = "# Handler Size Report\n";
+
+  if (_.isEqual(baseSizes, newSizes)) {
+    output += "No changes to handler sizes.\n";
+  }
+
   output += `### Base Handler Sizes (kB) (commit ${GITHUB_BASE_SHA})\n`;
   output += "```ts\n";
   output += JSON.stringify(baseSizes, null, 4) + "\n";

yarn.lock

@@ -3489,7 +3489,7 @@
   dependencies:
     "@types/node" "*"
 
-"@types/lodash@^4.14.123":
+"@types/lodash@^4.14.123", "@types/lodash@^4.14.170":
   version "4.14.170"
   resolved "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.170.tgz#0d67711d4bf7f4ca5147e9091b847479b87925d6"
   integrity sha512-bpcvu/MKHHeYX+qeEN8GE7DIravODWdACVA1ctevD8CN24RhPZIKMn9ntfAsrvLfSX3cR5RrBKAbYm9bGs0A+Q==