Add name lookups to ls command - fixes #1599

[sebmck]

No description provided.

[SimenB]

Doesn't seem to work.

$ npm ls yargs
finnlet-server@1.0.0 /Users/simbekkh/repos/finnlet-server
└─┬ pug@2.0.0-beta6
  └─┬ pug-filters@1.2.4
    └─┬ uglify-js@2.7.4
      └── yargs@3.10.0

$ ../yarn/bin/yarn.js ls yargs
yarn ls v0.17.0-0
error Couldn't find package "yargs".
info Visit https://yarnpkg.com/en/docs/cli/ls for documentation about this command.

Local yarn is 286efb9, with ./scripts/build-dist.sh ran

[SimenB]

Doing just ls works

$ ../yarn/bin/yarn.js ls
...
└─ yargs@4.8.1
│  ├─ cliui@^3.2.0
│  ├─ decamelize@^1.1.1
│  ├─ get-caller-file@^1.0.1
│  ├─ lodash.assign@^4.0.3
│  ├─ os-locale@^1.4.0
│  ├─ read-pkg-up@^1.0.1
│  ├─ require-directory@^2.1.1
│  ├─ require-main-filename@^1.0.1
│  ├─ set-blocking@^2.0.0
│  ├─ string-width@^1.0.1
│  ├─ which-module@^1.0.0
│  ├─ window-size@^0.2.0
│  ├─ y18n@^3.2.1
│  └─ yargs-parser@^2.4.1
✨  Done in 0.63s.

$ ./yarn/bin/yarn.js ls | grep yargs
│  ├─ yargs@~3.27.0
│  └─ yargs@3.27.0
│  ├─ yargs-parser@3.2.0
│  ├─ yargs@^5.0.0
│  └─ yargs@5.0.0
│  │  └─ yargs-parser@^3.2.0
│  ├─ yargs-parser@3.2.0
│  ├─ yargs@^5.0.0
│  └─ yargs@5.0.0
│  │  └─ yargs-parser@^3.2.0
│  ├─ yargs@~3.10.0
│  └─ yargs@3.10.0
│  └─ yargs@^4.7.1
├─ yargs-parser@2.4.1
└─ yargs@4.8.1
│  └─ yargs-parser@^2.4.1

EDIT: OK, it works for top level deps, but not deps of deps.

I'd like to to e.g. yarn ls minimatch when old minimatches are used, to find out which package uses a vulnerable one.

It's still a bit weird, though

$ ../yarn/bin/yarn.js ls graphql
yarn ls v0.17.0-0
├─ graphql@0.6.2
│  └─ iterall@1.0.2
└─ iterall@1.0.2
✨  Done in 0.27s.

Why is iterall there?