load-scripts.php Can't find variable

I’m seeing a couple of errors in some core WordPress files. Do plugins write to default.js or load-scripts.php or are these purely core?

Here are the errors:

default.js

Line 3:14 undefined is not an object (evaluating ‘wp.media’)
wp.media.customlibEditGallery = {
Here’s a little more code, to give context:

jQuery(document).ready(function($) {
    var $upload_button = jQuery('.qode-gallery-upload');
<strong>    wp.media.customlibEditGallery = {
</strong>        frame: function() {
            if (this._frame)

load-scripts.php

Line 13 Can’t find variable:jQuery
}(function(a) {
here’s the code around it:

!function(a) {
    "function" == typeof define && define.amd ? define(["jquery"], a) : a(jQuery)
<strong>}(function(a) {</strong>
    function b(b, d) {
        var e, f, g, h = b.nodeName.toLowerCase();
        return "area" === h ? (e = b.parentNode, f = e.name, b.href && f && "map" === e.nodeName.toLowerCase() ? (g = a("img[usemap='#" + f + "']")[0], !!g && c(g)) : !1) : (/^(input|select|textarea|button|object)$/.test(h)?!b.disabled : "a" === h ? b.href || d : d) && c(b)
    }

Line 1246:19 Can’t find variable:_
regexp: _.memoize(function(a) {
code around that line:

<strong>regexp: _.memoize(function(a) {</strong>
            return new RegExp("\\[(\\[?)(" + a + ")(?![\\w-])([^\\]\\/]*(?:\\/(?!\\])[^\\]\\/]*)*?)(?:(\\/)\\]|\\](?:([^\\[]*(?:\\[(?!\\/\\2\\])[^\\[]*)*)(\\[\\/\\2\\]))?)(\\]?)", "g")
        }),

I’m seeing issues with updating plugins, using the upload button, and theme rendering in mobile.