diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2618a4bd..f75bdf09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@
 - Added `setup()` method for `upload` extension to specify custom settings
 - Added `#.actions.uploadFile.dragdrop` to indicate drag&drop file supported or not (provided by `upload` extension)
 - Added `embed` extension to provide a communication with a host in case when an app is loaded into iframe
-- Added `dist/discovery-embed-host.js` a ESM module which provides an API to communicate with an app loaded into a sandbox (iframe)
+- Added `dist/discovery-embed-host.js` into package, a ESM module which provides an API to communicate with an app loaded into a sandbox (iframe)
 - Added `embed` support for preloader
 - Tweaked nested list styles in `markdown` view
 - Fixed applying twice the extensions passed via `App`'s options
diff --git a/dist/.npmignore b/dist/.npmignore
index 5c2d5a3f..8add8545 100644
--- a/dist/.npmignore
+++ b/dist/.npmignore
@@ -1,4 +1,5 @@
 *
+!discovery-embed-host.js
 !discovery-preloader.css
 !discovery-preloader.js
 # !discovery-preloader.js.map
diff --git a/package.json b/package.json
index dea27242..461ea245 100644
--- a/package.json
+++ b/package.json
@@ -12,12 +12,12 @@
     "jsdelivr": "dist/discovery.js",
     "scripts": {
         "lint": "eslint cypress models src",
-        "build": "npm run build:js && npm run build:css && npm run build:preloader",
-        "build:js": "esbuild src/lib.js --outfile=dist/discovery.js --bundle --define:global=window --format=esm --minify --sourcemap",
+        "build": "npm run build:js && npm run build:css && npm run build:preloader && npm run build:embed-host",
+        "build:js": "esbuild src/lib.js --outfile=dist/discovery.js --bundle --define:global=window --format=esm --minify --sourcemap=external",
         "build:css": "esbuild src/lib.css --outfile=dist/discovery.css --bundle --minify --loader:.svg=dataurl",
-        "build:embed-host": "esbuild src/extensions/embed-host.js --outfile=dist/discovery-embed-host.js --bundle --define:global=window --format=esm --sourcemap=inline",
+        "build:embed-host": "esbuild src/extensions/embed-host.js --outfile=dist/discovery-embed-host.js --bundle --define:global=window --format=esm --minify --sourcemap=external",
         "build:preloader": "npm run build:preloader:js && npm run build:preloader:css",
-        "build:preloader:js": "esbuild src/preloader.js --outfile=dist/discovery-preloader.js --bundle --define:global=window --format=esm --minify --sourcemap",
+        "build:preloader:js": "esbuild src/preloader.js --outfile=dist/discovery-preloader.js --bundle --define:global=window --format=esm --minify --sourcemap=external",
         "build:preloader:css": "esbuild src/preloader.css --outfile=dist/discovery-preloader.css --bundle --minify --loader:.svg=dataurl",
         "build-gh-pages": "discovery-build -o .gh-pages --clean",
         "prepublishOnly": "node scripts/bake-version.cjs && npm run build",