ref: Fix issue when /dist didn't exist before building

Author: iker-barriocanal

packages/serverless/package.json

@@ -45,14 +45,15 @@
     "typescript": "3.7.5"
   },
   "scripts": {
-    "build": "run-p build:es5 build:esm build:awslambda-layer",
+    "build": "run-s build:es build:awslambda-layer",
+    "build:es": "run-p build:es5 build:esm",
     "build:es5": "tsc -p tsconfig.build.json",
     "build:esm": "tsc -p tsconfig.esm.json",
     "build:awslambda-layer": "node scripts/build-awslambda-layer.js",
     "build:watch": "run-p build:watch:es5 build:watch:esm",
     "build:watch:es5": "tsc -p tsconfig.build.json -w --preserveWatchOutput",
     "build:watch:esm": "tsc -p tsconfig.esm.json -w --preserveWatchOutput",
-    "clean": "rimraf dist coverage build esm",
+    "clean": "rimraf dist dist-awslambda-layer coverage build esm",
     "link:yarn": "yarn link",
     "lint": "run-s lint:prettier lint:eslint",
     "lint:prettier": "prettier --check \"{src,test}/**/*.ts\"",

packages/serverless/scripts/build-awslambda-layer.js

@@ -69,6 +69,11 @@ async function collectPackages(cwd, packages = {}) {
 
 async function main() {
   const workDir = path.resolve(__dirname, '..'); // packages/serverless directory
+  const distRequirements = path.resolve(workDir, 'dist');
+  if (!fs.existsSync(distRequirements)) {
+    console.log(`The path ${distRequirements} must exist.`);
+    return;
+  }
   const packages = await collectPackages(workDir);
 
   const dist = path.resolve(workDir, 'dist-awslambda-layer');