eslint: Can't install eslint

I followed the install instructions: npm install -g eslint and then this:

$ eslint --init
? How would you like to configure ESLint? Use a popular style guide
? Which style guide do you want to follow? Standard
? What format do you want your config file to be in? JavaScript
Installing eslint-plugin-standard, eslint-config-standard
@mperham/sidekiq@0.5.0 /Users/mike/src/sjs
├── UNMET PEER DEPENDENCY eslint@^2.0.0-rc.0
├── eslint-config-standard@5.1.0 
├── UNMET PEER DEPENDENCY eslint-plugin-promise@^1.0.8
├── eslint-plugin-standard@1.3.2 
└── sidekiq@1.1.1  extraneous

npm WARN eslint-config-standard@5.1.0 requires a peer of eslint@^2.0.0-rc.0 but none was installed.
npm WARN eslint-config-standard@5.1.0 requires a peer of eslint-plugin-promise@^1.0.8 but none was installed.
npm WARN @mperham/sidekiq@0.5.0 No repository field.

Running eslint lib gives this:

$ eslint lib

Oops! Something went wrong! :(

ESLint couldn't find the plugin "eslint-plugin-standard". This can happen for a couple different reasons:
[snip]

I’m new to the JavaScript world - please let me know if you need more info.