How to build a new library using some modules of OpenLayers

[petrospap]

Hello there!
I try to build a library to use OpenLayers but I don’t know how (or if is possible to build like this)
in my page i use the following modules to build different apps

import {Map, View} from 'ol';
import VectorSource from 'ol/source/Vector.js';
import Feature from 'ol/Feature.js';
import {Stroke, Icon, Style} from 'ol/style.js';
import Point from 'ol/geom/Point.js';
import {Vector as VectorLayer} from 'ol/layer.js';
import Overlay from 'ol/Overlay.js';
import TileLayer from 'ol/layer/Tile.js';
import OSM from 'ol/source/OSM.js';
import {toLonLat, fromLonLat, transform} from 'ol/proj.js';
import {toStringXY} from 'ol/coordinate.js';
import Polyline from 'ol/format/Polyline.js';

Page1

export class Streetmap1{
// run map 1 use all modules
}
parcel build the above modules
function t(t){return t&&t.__esModule?t.default:t}var e=class{... the rest code

Page2

export class Streetmap2{
// run map 2 not use stroke, polyline
}
parcel build the above modules
let t,e,i;function n(t){return t&&t.__esModule?t.default:t}var s=class{... the rest code

Page3

export class Streetmam3{
// run map 3 not use stroke, polyline, toStringXY, toLonLat
}
parcel build the above modules
let t,p,i;function n(t){return t&&t.__esModule?t.default:t}var n=class{... the rest code

Of course, this is not the right way to do thinks, in every page i have to load different names/hashes to do the same operators!

What i like to do is to build a new library (keeping the original function/class names?) and to use as import.
for example, ideal will be to build new class Mymap to includes the libraries minified and to use as Mymap.Map, Mymap.Stroke etc.

Any idea how to do this?