feat: come a new action

src/_exec.js

@@ -0,0 +1,2 @@
+const util = require('util');
+module.exports = util.promisify(require('child_process').exec);

src/index.js

@@ -0,0 +1,49 @@
+const exec = require('./_exec');
+const path = require('path');
+const {WritableStreamBuffer} = require('stream-buffers');
+
+const core = require('@actions/core');
+const semanticRelease = require('semantic-release');
+
+const release = async () => {
+  const branch = core.getInput('branch', {required: false}) || 'master';
+  const extraPlugins = core.getInput('extra_plugins', {required: false}) || '';
+
+  // pre-install plugins
+  if (extraPlugins) {
+    const _extraPlugins = extraPlugins
+      .replace(/['"]/g, '')
+      .replace(/[\n\r]/g, ' ');
+    const {stdout, stderr} = await exec(`npm install ${_extraPlugins}`, {
+      cwd: path.resolve(__dirname)
+    });
+    console.log(stdout);
+    if (stderr) {
+      return Promise.reject(stderr);
+    }
+  }
+
+  const result = await semanticRelease({branch});
+
+  if (!result) {
+    core.debug('No release published.');
+    return;
+  }
+
+  const {lastRelease, commits, nextRelease, releases} = result;
+
+  core.debug(`Published ${nextRelease.type} release version ${nextRelease.version} containing ${commits.length} commits.`);
+
+  if (lastRelease.version) {
+    core.debug(`The last release was "${lastRelease.version}".`);
+  }
+
+  for (const release of releases) {
+    core.debug(`The release was published with plugin "${release.pluginName}".`);
+  }
+};
+
+
+module.exports = () => {
+  release().catch(core.setFailed);
+};