Tools: Error: Cannot find module 'js-yaml'

[johnthad]

I am trying to convert Polymer 2 projects to Polymer 3. Even with my simplest project--a single component, no mixins, checked out clean from its Git repo--I get the following error:

````
$ bower cache clean && bower install
bower not-cached https://github.com/Polymer/polymer.git#^2.0.0
...

$ modulizer --out .
Error: Cannot find module 'js-yaml'
at Function.Module._resolveFilename (module.js:547:15)
at Function.Module._load (module.js:474:25)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object. (/Users/thad/.nvm/versions/node/v8.11.1/lib/node_modules/polymer-modulizer/src/travis-config.ts:16:1)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
````

I am using polymer-modulizer v0.4.0, Node v8.11.1, and npm v5.8.0 on macOS 10.13.4 (High Sierra).

This error persists after I run npm install js-yaml to install js-yaml v3.11.0.

[web-padawan]

Duplicate of #436 which is fixed but not yet released

[stale[bot]]

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