Use webpack-dev-server instead of http-server #2542
Merged
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Advantages:
blocks while a rebuild is in progress so you're less likely to reload the old version
serves from memory rather than disk, so we no longer need to turn off the cachebuster to avoid filling the disk with bundles. Empirically, seems to last a plausible amount of time without OOMing; there's no real reason to believe it would use any more memory than webpack itself.
That in turn means we no longer need the hack to stop chrome caching old sourcemaps (because the sourcemap now has a cachebuster in its name).
one fewer process for parallelshell to (fail to) manage.
in future, we could consider the fancy hot-reload functionality.