js/vendor

Local copies of the three modules ../zip-on-the-fly.js imports, so it can run with no internet (a plane, a hotel, a dead CDN).

zip-on-the-fly.js imports the CDN versions by default. To switch, comment out the ONLINE import block at the top of that file and uncomment the OFFLINE one below it.

Refreshing these

~/d/esbuild_es5/esbuild.js -f esm -t es2020 \
  'https://esm.ext.archive.org/lit?target=es2022' \
  'https://esm.ext.archive.org/client-zip@2/index.js?target=es2022'

mv build/lit_target=es2022.min.js  js/vendor/lit.min.js
mv build/index.min.js              js/vendor/client-zip.min.js
cp ~/av/www/js/util/log.js         js/vendor/log.js

Two flags matter, and both bite silently if you leave them off:

• -t es2020 — client-zip uses BigInt literals (0n), which the wrapper’s default es6 target rejects outright with Big integer literals are not available in the configured target environment.
• ?target=es2022 — esbuild runs under Deno, so esm.sh content-negotiates on the User-Agent and hands back its denonext builds. Those happen to work in a browser, but pinning the target means the bundle holds the same code a browser would fetch.

sourceMappingURL comments are stripped, since the .map files aren’t shipped and devtools would 404 looking for them.