feat: added help command

package.json

@@ -19,7 +19,7 @@
     "@commitlint/cli": "^6.0.2",
     "@commitlint/config-conventional": "^6.0.2",
     "@dxcli/config": "^0.1.39",
-    "@dxcli/engine": "^0.1.20",
+    "@dxcli/engine": "^0.1.22",
     "@dxcli/test": "^0.9.19",
     "@dxcli/tslint": "^0.1.3",
     "@types/chai": "^4.1.2",

src/commands/help.ts

@@ -1,9 +1,22 @@
 import Command from '@dxcli/command'
+import {IConfig} from '@dxcli/config'
 import cli from 'cli-ux'
 
+import Help from '..'
+
+const config: IConfig = global.dxcli.config
+
 export default class HelpCommand extends Command {
+  static title = `display help for ${config.bin}`
+  static args = [
+    {name: 'command', required: false}
+  ]
+
   async run() {
-    const name = this.flags.name || 'world'
-    cli.log(`hello ${name}!`)
+    let id = this.args.command as string
+    let help = new Help(this.config)
+    let command = this.config.engine!.findCommand(id, true)
+    let commandHelp = help.command(command)
+    cli.info(commandHelp)
   }
 }

src/global.d.ts

@@ -3,5 +3,8 @@
 declare namespace NodeJS {
   interface Global {
     'columns': number
+    dxcli: {
+      config: any
+    }
   }
 }

test/commands/help.test.ts

@@ -0,0 +1,14 @@
+import {expect, test} from '@dxcli/test'
+
+describe('help command', () => {
+  test
+  .stdout()
+  .command(['help', 'help'])
+  .it('shows help command help', ctx => {
+     expect(ctx.stdout).to.equal(`display help for dxcli
+
+USAGE
+  $ dxcli help [COMMAND]
+`)
+  })
+})

yarn.lock

@@ -122,9 +122,9 @@
     lodash "^4.17.4"
     read-pkg "^3.0.0"
 
-"@dxcli/engine@^0.1.20":
-  version "0.1.20"
-  resolved "https://registry.yarnpkg.com/@dxcli/engine/-/engine-0.1.20.tgz#d46977ccfe69daaf4e2762276ca8e61f48ee8295"
+"@dxcli/engine@^0.1.22":
+  version "0.1.22"
+  resolved "https://registry.yarnpkg.com/@dxcli/engine/-/engine-0.1.22.tgz#cf21e914c15cafe0188b426c06954eace921b8c5"
   dependencies:
     "@dxcli/manifest-file" "^0.1.0"
     cli-ux "^3.3.8"