Bump version 1.2.1 -> 1.2.2

CONTRIBUTING.md

@@ -103,14 +103,15 @@ After testing you can [create a v1 tag](https://github.com/actions/toolkit/blob/
 ## Release
 
 ```bash
+$ make build
 $ vi package.json
 $ vi package-lock.json
 $ git add .
 $ git commit -m 'Bump version 1.0.13 -> 1.1.0'
 $ git tag -a v1.1.0 -m 'version 1.1.0'
 $ git push --follow-tags
-git tag -fa v1 -m "Update v1 tag"
-git push origin v1 --force
+$ git tag -fa v1 -m "Update v1 tag"
+$ git push origin v1 --force
 ```
 
 Go to [GitHub Releases]() and create a new release

dist/index.js

@@ -1423,8 +1423,13 @@ function run() {
             const jobStatus = core.getInput('status', { required: true }).toUpperCase();
             const jobSteps = JSON.parse(core.getInput('steps', { required: false }) || '{}');
             const channel = core.getInput('channel', { required: false });
-            yield slack_1.default(url, jobName, jobStatus, jobSteps, channel);
-            core.debug('Sent to Slack.');
+            if (url) {
+                yield slack_1.default(url, jobName, jobStatus, jobSteps, channel);
+                core.debug('Sent to Slack.');
+            }
+            else {
+                core.info('No "SLACK_WEBHOOK_URL" secret configured. Skip.');
+            }
         }
         catch (error) {
             core.setFailed(error.message);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "slack",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "private": true,
   "description": "Notify Slack of GitHub Actions job and step status.",
   "main": "lib/main.js",