topic Re: Difference between @arcgis/core and arcgis-js-api in ArcGIS JavaScript Maps SDK Questions

Difference between @arcgis/core and arcgis-js-api

avecchi — Thu, 08 Apr 2021 16:16:29 GMT

Hello,

I'm currently using `@arcgis/core` for my React application but I'm running into long build times due to something with how webpack is code splitting the `@arcgis/core` code. I'm seeing now that there is another library called `arcgis-js-api` and I'm wondering what the difference between the two is since they both look like they're doing the same thing.

Thanks

Re: Difference between @arcgis/core and arcgis-js-api

AndyGup — Thu, 08 Apr 2021 16:38:51 GMT

Same API just different modules: @arcgis/core uses ES modules and arcgis-js-api uses AMD modules. The underlying functionality is exactly the same. How is your webpack configured? cc @ReneRubalcava

Re: Difference between @arcgis/core and arcgis-js-api

avecchi — Thu, 08 Apr 2021 16:39:19 GMT

I'm just spun up a Create React Application

Re: Difference between @arcgis/core and arcgis-js-api

AndyGup — Fri, 17 Jun 2022 12:09:30 GMT

Maybe try updating via `npm i '@ArcGIS/core@next`. Starting at 4.19 (coming out later this month) there's no asset copying by default (unless you need the assets locally). Here's our working sample for 4.18: https://github.com/Esri/jsapi-resources/tree/master/esm-samples/jsapi-create-react-app

Re: Difference between @arcgis/core and arcgis-js-api

avecchi — Thu, 08 Apr 2021 17:06:36 GMT

I see. Not copying the assets on 4.19 is working but I'm still having my issue with my production build.

My main issue is that whenever I import a single module from @Anonymous User/core e.g:

import Graphic from '@arcgis/core/Graphic'

My webpack production build process runs out of memory.

Re: Difference between @arcgis/core and arcgis-js-api

avecchi — Thu, 08 Apr 2021 17:16:13 GMT

Even trying to build the sample jsapi-create-react-app takes a very long time

Re: Difference between @arcgis/core and arcgis-js-api

avecchi — Thu, 08 Apr 2021 17:49:09 GMT

I'm going to spin up a thread for this

Re: Difference between @arcgis/core and arcgis-js-api

JamesBrett — Thu, 16 Jun 2022 19:04:34 GMT

@AndyGupSo as I understand it the @arcgis/core copies all assets at build? I used CRA to display a globe and my build is over 1GB.

Is this the correct functionality of @arcgis/core? Will esri-loader give me smaller builds?

Re: Difference between @arcgis/core and arcgis-js-api

avecchi — Thu, 16 Jun 2022 19:09:56 GMT

I haven't been able to get @arcgis/core to work given the large build size and build time. I've been stuck using esri-loader.

Re: Difference between @arcgis/core and arcgis-js-api

AndyGup — Thu, 16 Jun 2022 20:36:26 GMT

@JamesBrett Nope, that doesn't sound right. Can you provide a simple github repo that we can look at? Here are our sample app build sizes for comparison: https://github.com/Esri/jsapi-resources/blob/master/esm-samples/.metrics/4.23.0.csv

Re: Difference between @arcgis/core and arcgis-js-api

JamesBrett — Thu, 16 Jun 2022 20:39:12 GMT

Sure give me a few mins. I should have clarified that is the entire build folder. Let me check the size of the main.js. I see that is what your benchmarks are looking at.

Re: Difference between @arcgis/core and arcgis-js-api

AndyGup — Thu, 16 Jun 2022 20:44:45 GMT

Correct, we measure a variety of stats including the size of the entire build folder for each of the samples. A 1GB folder could the the result of things like configuration issues, third party libraries, a very large and complex application, lots of image files, etc.