node-pre-gyp issue #31
Description
yarn generates a warning:
warning mapnik > protozero@1.5.1: protozero should no longer be used via npm, install instead via https://github.com/mapbox/mason
npm generates an error:
npm ERR! extraneous: node-pre-gyp@0.6.39 /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.