Cannot find module 'hpack.js'

[itsmoops]

Hey there, my team just started a new project using the latest version of webpack-dev-server (2.7.1), and when starting up the server we are all consistently seeing the following error.

Error: Cannot find module 'hpack.js'
    at Function.Module._resolveFilename (module.js:440:15)
    at Function.Module._load (module.js:388:25)
    at Module.require (module.js:468:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/Users/a6001382/analytics/analytics-q/node_modules/spdy-transport/lib/spdy-transport/protocol/http2/hpack-pool.js:5:13)

The issue is still persisting even after attempting to install hpack.js as a globally available dependency. Is there a way to resolve this?

[ballPointPenguin]

seeing the same, starting today

[itsmoops]

Hey @ballPointPenguin - I was able to resolve this issue. I found out that this wasn't exactly an issue with the package itself. Try running npm i -g npm@latest-4 and try installing again. Evidently some versions of NPM don't correctly set the "main" field of package.json if the package contains a period like hpack.js.

[ballPointPenguin]

aha. Thank you @itsmoops

[Nolanus]

Updating npm did not solve the problem for me. I had to manually go into node_modules/spdy-transport and run npm install in there (as pointed out here).