Installation Error on Ubuntu 16.04, 64bit

I tried to install solgraph through “npm install --save -g solgraph” on ubuntu 16.04. However, I failed with some errors: root@ubuntu:# npm install --save -g solgraph /usr/local/bin/solgraph -> /usr/local/lib/node_modules/solgraph/solgraph.js

solgraph@0.3.1 postinstall /usr/local/lib/node_modules/solgraph npm run build

solgraph@0.3.1 build /usr/local/lib/node_modules/solgraph babel -d dist src

Error: [BABEL] /usr/local/lib/node_modules/solgraph/src/bin.js: The pipeline operator requires a proposal set. You must pass ‘pipelineProposal’ option to @babel/preset-stage-1 (While processing: “/usr/local/lib/node_modules/solgraph/node_modules/@babel/preset-stage-1/lib/index.js”) at _default (/usr/local/lib/node_modules/solgraph/node_modules/@babel/preset-stage-1/lib/index.js:116:11) at /usr/local/lib/node_modules/solgraph/node_modules/@babel/helper-plugin-utils/lib/index.js:19:12 at loadDescriptor (/usr/local/lib/node_modules/solgraph/node_modules/@babel/core/lib/config/full.js:157:14) at cachedFunction (/usr/local/lib/node_modules/solgraph/node_modules/@babel/core/lib/config/caching.js:32:19) at loadPresetDescriptor (/usr/local/lib/node_modules/solgraph/node_modules/@babel/core/lib/config/full.js:227:63) at config.presets.map.descriptor (/usr/local/lib/node_modules/solgraph/node_modules/@babel/core/lib/config/full.js:72:19) at Array.map (<anonymous>) at recurseDescriptors (/usr/local/lib/node_modules/solgraph/node_modules/@babel/core/lib/config/full.js:70:38) at loadFullConfig (/usr/local/lib/node_modules/solgraph/node_modules/@babel/core/lib/config/full.js💯6) at process.nextTick (/usr/local/lib/node_modules/solgraph/node_modules/@babel/core/lib/transform-file.js:48:33) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! solgraph@0.3.1 build: babel -d dist src npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the solgraph@0.3.1 build script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules/solgraph/node_modules/fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {“os”:“darwin”,“arch”:“any”} (current: {“os”:“linux”,“arch”:“x64”})

npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! solgraph@0.3.1 postinstall: npm run build npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the solgraph@0.3.1 postinstall script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in: npm ERR! /root/.npm/_logs/2018-07-06T17_44_46_341Z-debug.log

[raineorshine]

"pipelineProposal": "minimal" added and published in v0.3.2. Please try again and report here. If you still cannot install, additional help would be appreciated to reproduce.

[raineorshine]

Hmmm the build is passing on https://travis-ci.org/raineorshine/solgraph

@jpantunes Another babel issue. Any ideas?