yarn build bundle.js is randomly different between runs

[emteknetnz]

The order of client/dist/js/bundle.js is sometimes randomly changes in 1.13 between subsequent runs on yarn build between despite no changes in the client/src

This was noticed during this PR

I'm believe this only affects CMS 4 which uses webpack 3. I was unable to replicate on CMS 5 using webpack 5 using the code code changes in GridField.js that the linked PR above has

I did try adding && rm -rf client/dist/* to the yarn build command in package.json for CMS 4, just CMS 5 has, though it did not fix the issue

Doing a text-compare of the first 1,000 lines of bundle.js adding line breaks of every semicolon:

PRs

• ENH Output sha1sum of files in git diff gha-run-tests#19

[GuySartorelli]

Is this a duplicate of silverstripe/gha-run-tests#11?

[emteknetnz]

I don't know, we didn't isolate the cause of the issue on the one you linked. The symptom looks the same (modified bundle.js file) thought the cause may be different

[emteknetnz]

Re-ran github actions build a copy of time post merging the PR that outputs the sha1sum, it changes between runs on github actions as well so it's not isolated to local environments

github actions run A
4fe821cac444d5fd2d17f09740730fc1dbc4c2c4 client/dist/js/bundle.js

github actions run B (haven't changed code, just clicked re-run button)
a76c9557b1fb415eb4439a20d3376ce4273a7a9b client/dist/js/bundle.js

[emteknetnz]

Look to have resolved by running yarn upgrade webpack