Issue #2916800 by jrockowitz, Grimreaper, NickWilde: Drush 9 support

Author: NickWilde

Diff for: composer.json

@@ -1,19 +1,26 @@
 {
-    "name": "drupal/webform",
-    "description": "Enables the creation of webforms and questionnaires.",
-    "type": "drupal-module",
-    "license": "GPL-2.0+",
-    "minimum-stability": "dev",
-    "homepage": "https://drupal.org/project/webform",
-    "authors": [
-        {
-            "name": "Jacob Rockowitz (jrockowitz)",
-            "homepage": "https://www.drupal.org/u/jrockowitz",
-            "role": "Maintainer"
-        }
-    ],
-    "support": {
-        "issues": "https://drupal.org/project/issues/webform",
-        "source": "http://cgit.drupalcode.org/webform"
+  "name": "drupal/webform",
+  "description": "Enables the creation of webforms and questionnaires.",
+  "type": "drupal-module",
+  "license": "GPL-2.0+",
+  "minimum-stability": "dev",
+  "homepage": "https://drupal.org/project/webform",
+  "authors": [
+    {
+      "name": "Jacob Rockowitz (jrockowitz)",
+      "homepage": "https://www.drupal.org/u/jrockowitz",
+      "role": "Maintainer"
     }
+  ],
+  "support": {
+    "issues": "https://drupal.org/project/issues/webform",
+    "source": "http://cgit.drupalcode.org/webform"
+  },
+  "extra": {
+    "drush": {
+      "services": {
+        "drush.services.yml": "^9"
+      }
+    }
+  }
 }

Diff for: docs/DRUSH-COMMANDS.md

@@ -0,0 +1,86 @@
+Steps for testing Drush 8.x and 9.x commands
+--------------------------------------------
+
+# Drush 8.x and below
+
+```bash
+# Version.
+drush --version
+
+# Help.
+drush help --filter=webform
+
+# Submissions.
+drush webform-generate contact
+drush webform-export contact
+drush webform-purge -y contact
+
+# Option.
+drush webform-generate --entity-type=node --entity-id={ENTER_NID} contact
+drush webform-export --delimiter="\t" --header-format="key" contact
+
+# Libraries.
+drush webform-libraries-status
+drush webform-libraries-remove
+drush webform-libraries-download
+drush webform-libraries-make
+drush webform-libraries-composer
+
+# Tidy.
+drush webform-tidy
+
+# Repair.
+drush webform-repair -y
+
+# Docs.
+drush en -y readme
+drush webform-docs
+
+# Composer.
+drush webform-composer-update
+
+# Commands.
+drush webform-generate-commands
+```
+
+# Drush 9.x and above
+
+```bash
+# Version.
+drush --version
+
+# Help.
+drush list --filter=webform
+
+# Submissions.
+drush webform:generate contact
+drush webform:export contact
+drush webform:purge -y contact
+
+# Options.
+drush webform:generate --entity-type=node --entity-id={ENTER_NID} contact
+drush webform:export --delimiter="\t" --header-format=key contact
+
+# Libraries.
+drush webform:libraries:status
+drush webform:libraries:remove
+drush webform:libraries:download
+drush webform:libraries:make
+drush webform:libraries:composer
+
+# Tidy.
+drush webform:tidy
+
+# Repair.
+drush webform:repair -y
+
+# Docs.
+drush en -y readme
+drush webform:docs
+
+# Composer.
+drush webform:composer:update
+
+# Commands.
+drush webform:generate:commands
+```

Diff for: drush.services.yml

@@ -0,0 +1,6 @@
+services:
+  webform.commands:
+    class: \Drupal\webform\Commands\WebformCommands
+    arguments: ['@webform.cli_service']
+    tags:
+      - { name: drush.command }