node-pre-gyp issue

[danstoner]

yarn generates a warning:

warning mapnik > [email protected]: protozero should no longer be used via npm, install instead via https://github.com/mapbox/mason

npm generates an error:

npm ERR! extraneous: [email protected] /home/dstoner/git/idigbio-search-api/node_modules/node-pre-gyp

Trying to use "npm list --depth=0" in travis-ci and the error means the build fails. yarn is currently missing identical functionality to that npm list feature (show installed / in the package.json versions), yarn list shows all available packages. Regardless of my personal need, at some point we need to take care of mapnik / node-pre-gyp issue.

[danstoner]

Possibly useful links:

https://www.npmjs.com/package/node-pre-gyp

https://github.com/mapbox/mason