Strange webpack content after build

[rochapablo]

Type of issue

Description

When I run gulp build --modules=modules.json the build/dist/prebid.js have some strange content like comments from webpack and a lot of \n and spaces.

Steps to reproduce

Test page

Expected results

A clean file less than 400K

Actual results

I'm getting a file of 480K

__webpack_exports__,__webpack_require__)=>{eval("__webpack_require__.r(__webpack_exports__);\n/* harmony export */ __webpack_require__.d(__webpack_exports__, {\n/* harmony export */   \"JSEncrypt\": () => (/* binding */ JSEncrypt)\n/* harmony export */ });\n/* harmony import */ var _lib_jsbn_base64__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./lib/jsbn/base64 */ \"./lib/lib/jsbn/base64.js\");\n/* harmony import */ var _JSEncryptRSAKey__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./JSEncryptRSAKey */ \"./lib/JSEncryptRSAKey.js\");\n/* harmony import */ var _version_json__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./version.json */ \"./lib/version.

{\n                s = +s << 1;\n                --len;\n            }\n            s = "(" + len + " bit)\\n";\n        }\n        // decode the integer\n        if (neg) {\n            v = v - 256;\n        }\n        var n = new _int10__WEBPACK_IMPORTED_MODULE_0__.Int10(v);\n        for (var i = start + 1; i < 

whether log warn/error or not\n * @constructor\n */\nvar JSEncrypt = /** @class */ (function () {\n    function JSEncrypt(options) {\n        options = options || {};\n        this.default_key_size = options.default_key_size ? parseInt(options.default_key_size, 10) : 1024;\n        this.default_public_exponent = options.default_public_exponent || \"010001\"; // 65537 default openssl public exponent for rsa key type\n        this.log = options.log || false;\n        // The private and public key.\n        this.key = null;\n    }\n    /**\n     * Method to set the rsa key parameter (one method is enough to set both the public\n     * and the private key, since the private key contains the public key paramenters)\n     * Log a warning if logs are enabled\n     * @param {Object|string} key the pem encoded string or an object (with or without header/footer)\n     * @public\n     */\n    JSEncrypt.prototype.setKey = function (key) {\n        if (this.log &

Platform details

npm -v
7.6.3

node -v
v15.12.0

Prebid.js
4.40.0

Other information

The problem seems to be when I add adagioBidAdapter

[ChrisHuie]

I think this might be related to the current use of the common chunks plugin. We are working on converting that to the now built-in plugin in webpack v4. So hopefully that fixes this.

[ChrisHuie]

@rochapablo I believe this could actually be a jsencrpyt issue -> #6699 removes this in a recent pr. Can you see if that has solved this issue?

[rochapablo]

@ChrisHuie perfect! Thank you verify much, have a great week.