Broken in node@v6.x.x

[tivac]

rollup-plugin-commonjs is broken in node@6.x.x due to the path module throwing if any of its input is not a string.

A small repro can be found here: https://gist.github.com/tivac/f4f8b4086fb8bc0c9d1cd166f1a2b396

> rollup -config ./rollup.config.js -i ./index.js

TypeError: Path must be a string. Received undefined
    at assertPath (path.js:7:11)
    at Object.dirname (path.js:697:5)
    at resolveId (C:\Users\pcavit\Desktop\rollup-cjs\node_modules\rollup-plugin-commonjs\dist\rollup-plugin-commonjs.cjs.js:103:37)
    at C:\Users\pcavit\Desktop\rollup-cjs\node_modules\rollup\Volumes\Storage\www\ROLLUP\rollup\src\utils\first.js:10:31
    at tryCatch (C:\Users\pcavit\Desktop\rollup-cjs\node_modules\rollup\Volumes\Storage\www\ROLLUP\rollup\node_modules\es6-promise\lib\es6-promise\-internal.js:185:12)
    at invokeCallback (C:\Users\pcavit\Desktop\rollup-cjs\node_modules\rollup\Volumes\Storage\www\ROLLUP\rollup\node_modules\es6-promise\lib\es6-promise\-internal.js:197:13)
    at publish (C:\Users\pcavit\Desktop\rollup-cjs\node_modules\rollup\Volumes\Storage\www\ROLLUP\rollup\node_modules\es6-promise\lib\es6-promise\-internal.js:168:7)
    at flush (C:\Users\pcavit\Desktop\rollup-cjs\node_modules\rollup\Volumes\Storage\www\ROLLUP\rollup\node_modules\es6-promise\lib\es6-promise\asap.js:87:5)
    at _combinedTickCallback (internal/process/next_tick.js:67:7)
    at process._tickCallback (internal/process/next_tick.js:98:9)

/src/index.js#L69 is causing the issue, I haven't dug in deeper yet.

[tivac]

I'm on windows, fwiw. Looking to see why tests aren't failing in node6 atm.

[tivac]

Ok, I see why this is failing for me but not in the tests.

My repo invokes rollup like this: rollup -config ./rollup.config.js -i ./index.js

The first time the resolveId hook is called it gets passed "./index.js" as the importee and undefined as the importer. It verifies that the importee begins with a "." and then tries to resolve the dirname of undefined which explodes.

The tests don't run into this because their entry value never starts with a ".". I can prevent this bug by invoking rollup like this: rollup -config ./rollup.config.js -i index.js

But that seems really unexpected and wrong. I think the check in /src/index.js#L67 should be changed to:

if ( importee[0] !== '.' || !importer ) return; // not our problem

Thoughts? All the tests still pass w/ that change, because it's only true for the entry module which should always be an ES Module (I assume).

[Flaise]

Same issue with Mac OS X and Node 6.

[Rich-Harris]

Fixed in 3.1.0, thanks for the PR @tivac

[barneycarroll]

I'm getting this on node 4.4.5:

$ rollup --config --watch

checking rollup-watch version...
bundling...
Path must be a string. Received undefined
TypeError: Path must be a string. Received undefined
    at assertPath (path.js:8:11)
    at Object.win32.resolve (path.js:130:5)
    at resolveId$1 (C:\Users\ttcarrollb\git\mithril-inspector\node_modules\rollup-plugin-node-resolve\dist\rollup-plugin-node-resolve.cjs.js:44:15)
    at C:\Users\ttcarrollb\git\mithril-inspector\node_modules\rollup\src\utils\first.js:8:31
    at process._tickCallback (node.js:369:9)
Type rollup --help for help, or visit https://github.com/rollup/rollup/wiki

My rollup.config.js:

module.exports = {
    entry      : './src/index.js',
    dest       : './build/index.js',
    format     : 'iife',
    sourceMap  : true,
    plugins    : [
        require( 'rollup-plugin-buble' )( {
            transforms : {
                dangerousForOf                : true,
                dangerousTaggedTemplateString : true
            }
        } ),
        require( 'rollup-plugin-commonjs' )( {
            include : './node_modules/**'
        } ),
        require( 'rollup-plugin-node-resolve' )( {
            jsnext  : true,
            main    : true
        } )
    ]
}

My pacakge.json's devDependencies:

{
    "rollup": "0.33.1",
    "rollup-plugin-buble": "0.12.1",
    "rollup-plugin-commonjs": "3.1.0",
    "rollup-plugin-node-resolve": "1.7.1",
    "rollup-watch": "2.4.0"
}

EDIT: locked down the version numbers, removed node_modules, cache cleaned, reinstalled, reproduce

Any ideas?

[lammas]

That error is coming from the rollup-plugin-node-resolve module. It'll work once rollup/rollup-plugin-node-resolve#45 is merged, but until then you can work around it by removing './' from the entry filename.

[barneycarroll]

Thanks @lammas — I spotted the error just as you posted. Confirmed fixed!