feat: Add lerna create command (#1326)

Author: evocateur

commands/create/README.md

@@ -1,8 +1,34 @@
 # `@lerna/create`
 
-> description TODO
+> Create a new lerna-managed package
 
 ## Usage
 
-TODO
+```
+lerna create <name> [loc]
 
+Create a new lerna-managed package
+
+Positionals:
+  name  The package name (including scope), which must be locally unique _and_
+        publicly available                                   [string] [required]
+  loc   A custom package location, defaulting to the first configured package
+        location                                                        [string]
+
+Command Options:
+  --access        When using a scope, set publishConfig.access value
+                             [choices: "public", "restricted"] [default: public]
+  --bin           Package has an executable. Customize with --bin
+                  <executableName>                             [default: <name>]
+  --description   Package description                                   [string]
+  --dependencies  A list of package dependencies                         [array]
+  --es-module     Initialize a transpiled ES Module
+  --homepage      The package homepage, defaulting to a subpath of the root
+                  pkg.homepage                                          [string]
+  --keywords      A list of package keywords                             [array]
+  --license       The desired package license (SPDX identifier)   [default: ISC]
+  --private       Make the new package private, never published
+  --registry      Configure the package's publishConfig.registry        [string]
+  --tag           Configure the package's publishConfig.tag             [string]
+  --yes           Skip all prompts, accepting default values
+```

commands/create/__tests__/__fixtures__/basic/lerna.json

@@ -0,0 +1,5 @@
+{
+  "yes": true,
+  "loglevel": "silent",
+  "version": "1.2.3"
+}

commands/create/__tests__/__fixtures__/basic/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "basic-root",
+  "private": true,
+  "version": "0.0.0-root"
+}

commands/create/__tests__/__fixtures__/basic/packages/sibling-pkg/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "sibling-pkg",
+  "version": "1.2.3"
+}

commands/create/__tests__/__fixtures__/custom-location/lerna.json

@@ -0,0 +1,9 @@
+{
+  "yes": true,
+  "loglevel": "silent",
+  "packages": [
+    "modules/*",
+    "packages/*"
+  ],
+  "version": "1.2.3"
+}

commands/create/__tests__/__fixtures__/custom-location/modules/sibling-pkg/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "sibling-pkg",
+  "version": "1.2.3"
+}

commands/create/__tests__/__fixtures__/custom-location/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "custom-location-root",
+  "private": true,
+  "version": "0.0.0-root"
+}

commands/create/__tests__/__fixtures__/custom-location/packages/lonely-pkg/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "lonely-pkg",
+  "version": "1.2.3"
+}

commands/create/__tests__/__fixtures__/independent/lerna.json

@@ -0,0 +1,5 @@
+{
+  "yes": true,
+  "loglevel": "silent",
+  "version": "independent"
+}

commands/create/__tests__/__fixtures__/independent/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "independent-root",
+  "private": true,
+  "version": "0.0.0-root"
+}