Cannot read property 'port' of null

[heyMP]

I installed parcel-bundler globally. When I run parcel index.html I get the following error.

Server running at http://localhost:1234
🚨  Cannot read property 'port' of null
    at new HMRServer (/Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/HMRServer.js:8:43)
    at Bundler.start (/Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/Bundler.js:177:18)
    at /Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/Bundler.js:130:15
    at next (native)
    at step (/Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/Bundler.js:3:191)
    at /Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/Bundler.js:3:437
    at /Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/Bundler.js:3:99
    at Bundler.bundle (/Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/Bundler.js:160:7)
    at Bundler.serve (/Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/lib/Bundler.js:615:10)
    at Command.bundle (/Users/scienceonlineed/.config/yarn/global/node_modules/parcel-bundler/bin/cli.js:67:13)

Tested in the following environments with the same result:

Mac

Node version: v6.11.5
Mac version: 10.12.5

Dockerfile:

FROM node:6.11.4
RUN npm install -g parcel-bundler
USER node
WORKDIR /home/node/html
CMD [ "parcel", "index.html" ]
EXPOSE 1234

[devongovett]

hmm, could be a node v6 thing... seems to work for me on v8.

[TheLarkInn]

@devongovett node 6 being current LTS, you'd probably want to at least add the minimum engines value for so that it's obvious for people that they can't use it. Just 2 cents :-D

[jpsc]

@TheLarkInn you mean 8 right?
@devongovett why you offer a babel-ed version of Bundler for 6? Why not only support 8 with only async ?

[devongovett]

it should be supported, just a bug. Someone want to look into what the API difference is? :D

[bigtunacan]

Same issue running node v6.8.1 on Mac 10.12.6

[ameriania]

the same problem in node version v6.9.5

[devongovett]

Should be fixed by bab5ff4. Will go out in the next release.

[devongovett]

Released in v1.0.2.

[danielcaldas]

Is this fixed? I installed version v1.1.0 and the problem still exists for node version v6.9.5, I then upgraded node to v8.9.0 and it started working as you can see in the picture below.

[davidnagli]

@danielcaldas What version of Parcel are you using?

[danielcaldas]

I wasn't clear above. I installed parcel v1.1.0.

[davidnagli]

Whoops sorry that was a dumb question 😂

Can you please send a zip file with your setup or post an example repo so I can try to reproduce the issue?

[davidnagli]

I ran it on a minimal example I made and it worked perfectly (using Node v6.9.5)

[danielcaldas]

Hey @davidnagli sorry for the false alarm was running parcel with a global version (v1.0.1)! Tried with parcel inside node_modules/bin and it's working fine with node v6.9.5! Thanks

[davidnagli]

yay! Glad you got it to work :)