Issue with spread operator

[dland512]

I'm getting this error on Ubuntu:

# ./node_modules/.bin/electron-rebuild 

/home/root/test/node_modules/electron-rebuild/lib/src/rebuild.js:73
                depKeys.push(...Object.keys(rootPackageJson.dependencies || {}));
                             ^^^

SyntaxError: Unexpected token ...
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:374:25)
    at Module._extensions..js (module.js:417:10)
    at Object.require.extensions.(anonymous function) [as .js] (/home/root/test/node_modules/babel-register/lib/node.js:152:7)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object.<anonymous> (/home/root/test/node_modules/electron-rebuild/src/cli.ts:9:1)
    at Module._compile (module.js:410:26)

Seems to be choking on the spread operator. Does electron-rebuild itself run under electron's node or the system's node? I'm guessing the system's node, which at version 4.2.6 can't handle the spread operator. Does that sound right? I can't necessarily upgrade it.

Here is my environment info:

Ubuntu: 16.04, ARMv7
system node: v4.2.6
npm: 3.5.2
electron: v1.4.16
electron node: 6.5.0

It works fine in my dev environment, which is running node 6.11.0.

[dland512]

FYI, the problem did seem to be the fact that my system node, which as at v4.2.6, wasn't new enough to support the spread operator. Once I upgraded to v6.5.0 the rebuild worked fine.

[malept]

Thanks for filing an issue, but according to https://github.com/electron/electron-rebuild/blob/dbd5b278a7e435b7dd7ca7676388c550c1ced3a6/package.json#L30-L32 the minimum Node version for electron-rebuild is Node 6.

[dland512]

Checkout pull request to update docs with this info.