Resolve preact Brotli build conflict: same filename - node.js

Question

current behavior
preact build --brotli prints the following error:
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
other relevant information
My app is a standard preact-cli 'Default' (preact-cli template).
Not using the --brotli flag builds as desired/expected.
It's clear the js files are being built to .br but with no filename.
Environment Info:
System:
OS: Windows 10 10.0.19045
CPU: (8) x64 11th Gen Intel(R) Core(TM) i7-1165G7 # 2.80GHz
Binaries:
Node: 18.12.1
npm: 8.4.1
Browsers:
Edge: Spartan (44.19041.1266.0), Chromium (108.0.1462.54)
npmPackages:
preact: ^10.11.2 => 10.11.2
preact-cli: ^3.4.1 => 3.4.1
preact-render-to-string: ^5.2.6 => 5.2.6
preact-router: ^4.1.0 => 4.1.0
Per the preact-cli documentation combined with the only walkthrough I could find on expected behavior I expected to see "... all the generated javascript files also have a .js.br files next to them."
Steps to reproduce the behavior:
preact build --brotli
See error
error
preact build --brotli
‼ WARN Could not find sw.js in C:\... Using the default service worker.
bundle.*****.esm.js ⏤ 91.3 kB
polyfills.*****.esm.js ⏤ 2.18 kB
route-REDACT.chunk.6bef3.css ⏤ 236 B
route-REDACT.chunk.*****.esm.js ⏤ 849 B
route-REDACT.chunk.*****.esm.js ⏤ 1.54 kB
route-REDACT.chunk.64635.css ⏤ 138 B
route-REDACT.chunk.*****.esm.js ⏤ 641 B
route-REDACT.chunk.*****.esm.js ⏤ 294 B
sw.js ⏤ 10.9 kB
sw-esm.js ⏤ 10.9 kB
polyfills.77b1f.js ⏤ 2.28 kB
index.html ⏤ 1.66 kB (-19 B)
200.html ⏤ 1.17 kB
bundle.ccccc.css ⏤ 5.36 kB
route-REDACT.chunk.230c8.css ⏤ 139 B
route-REDACT.chunk.*****.esm.js ⏤ 405 B
route-REDACT.chunk.f85cc.css ⏤ 571 B
bundle.bbbbb.js ⏤ 92.7 kB
route-REDACT.chunk.f4a3f.js ⏤ 412 B
route-REDACT.chunk.4a8c5.js ⏤ 1.36 kB
route-REDACT.chunk.56f91.js ⏤ 2.14 kB
route-REDACT.chunk.e7d3e.js ⏤ 1.16 kB
route-REDACT.chunk.68634.js ⏤ 293 B
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN asset size limit: The following asset(s) exceed the recommended size limit (195 KiB).
This can impact web performance.
Assets:
bundle.aaaaa.esm.js (376 KiB)
bundle.bbbbb.js (390 KiB)
‼ WARN entrypoint size limit: The following entrypoint(s) combined asset size exceeds the recommended limit (195 KiB). This can impact web performance.
Entrypoints:
bundle (785 KiB)
bundle.ccccc.css
bundle.bbbbb.js
bundle.aaaaa.esm.js
`your text`‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN Conflict: Multiple assets emit different content to the same filename .br
‼ WARN asset size limit: The following asset(s) exceed the recommended size limit (195 KiB).
This can impact web performance.
Assets:
bundle.aaaaa.esm.js (376 KiB)
bundle.bbbbb.js (390 KiB)
‼ WARN entrypoint size limit: The following entrypoint(s) combined asset size exceeds the recommended limit (195 KiB). This can impact web performance.
Entrypoints:
bundle (785 KiB)
bundle.ccccc.css
bundle.bbbbb.js
bundle.aaaaa.esm.js

Answer 1

Fix for this issue was release as preact-cli v3.4.3.