webpack/webpack-dev-server v4.0.0-rc.0 on GitHub

4.0.0-rc.0 (2021-07-19)

rename client.transport to client.webSocketTransport
move web socket client to web socket server class, i.e. to get web socket clients use this.webSocketServer.clients
remove entry options (i.e. hotEntry and needClientEntry) in favor manual setup entries (#3494)
you need to reset CLI options using reset option, please look them in webpack serve --help
host and port options can't be null or empty string

allow to close overlay in browser (#3433) (307f2e7)
add port auto (#3297) (437c8d3)
added <url> pattern for open and allow to use multiple browsers (#3496) (7c7ccf9)
allow string value for client.webSocketURL.port (#3354) (f5e7f8f)
allow to disable web socket server using webSocketServer: false (f62f20f)
allow username and password in clientURL (#3452) (a7225d5)
display documentation links on errors (#3512) (54790ab)
enable compress by default (#3303) (4d251b5)
implement the client.webSocketURL.protocol option (#3380) (8998d6b)
the ipc option was added for unix socket (#3479) (b559738)
support Function in headers option (#3267) (28f9597)

allow to use 80 port for dev server (#3487) (22f18eb)
avoid duplicate App updated. Recompiling... (#3488) (a2e3ead)
do not allow empty string for port (#3372) (8c53102)
don't allow empty array for allowedHosts option (#3451) (17aa345)
get rid of Symbol core-js polyfill (#3535) (7afe3d2)
the host option can't be null or empty string (#3352) (216b0d3)
improve message for static content changes (#3289) (970a7d7)
improve processing of CLI flags (#3313) (32bc877)
rename firewall option to allowedHosts option (#3345) (81e4e55)
pass own logger in historyApiFallback (#3373) (3ba2fa5)
polling usage in watchFiles option (#3366) (2afb223)
postpone initialize (#3467) (80087de)
regression with port and bonjour (c2805fe)
rename path to pathname for client.webSocketURL (#3466) (fd63e02)
respect logLevel and logProvider option for proxy (#3257) (199baec)
show plugin name in progress log (#3337) (b8a0932)