[meta] make the dist build 50% smaller

package.json

@@ -34,9 +34,13 @@
         "side-channel": "^1.0.6"
     },
     "devDependencies": {
+        "@browserify/envify": "^6.0.0",
+        "@browserify/uglifyify": "^6.0.0",
         "@ljharb/eslint-config": "^21.1.0",
         "aud": "^2.0.4",
         "browserify": "^16.5.2",
+        "bundle-collapser": "^1.4.0",
+        "common-shakeify": "~1.0.0",
         "eclint": "^2.8.1",
         "es-value-fixtures": "^1.4.2",
         "eslint": "=8.8.0",
@@ -51,13 +55,15 @@
         "jackspeak": "=2.1.1",
         "mkdirp": "^0.5.5",
         "mock-property": "^1.0.3",
+        "module-deps": "^6.2.3",
         "npmignore": "^0.3.1",
         "nyc": "^10.3.2",
         "object-inspect": "^1.13.1",
         "qs-iconv": "^1.0.4",
         "safe-publish-latest": "^2.0.0",
         "safer-buffer": "^2.1.2",
-        "tape": "^5.7.5"
+        "tape": "^5.7.5",
+        "unassertify": "^3.0.1"
     },
     "scripts": {
         "prepack": "npmignore --auto --commentLines=autogenerated && npm run dist",
@@ -70,7 +76,7 @@
         "readme": "evalmd README.md",
         "postlint": "eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git' | grep -v dist/)",
         "lint": "eslint --ext=js,mjs .",
-        "dist": "mkdirp dist && browserify --standalone Qs lib/index.js > dist/qs.js"
+        "dist": "mkdirp dist && browserify --standalone Qs -g unassertify -g @browserify/envify -g [@browserify/uglifyify --mangle.keep_fnames --compress.keep_fnames --format.indent_level=1 --compress.arrows=false --compress.passes=4 --compress.typeofs=false] -p common-shakeify -p bundle-collapser/plugin lib/index.js > dist/qs.js"
     },
     "license": "BSD-3-Clause",
     "publishConfig": {