Installing dependencies.

node_modules/env-ci/lib/git.js

@@ -0,0 +1,30 @@
+const execa = require('execa');
+
+function head(options) {
+  try {
+    return execa.sync('git', ['rev-parse', 'HEAD'], options).stdout;
+  } catch {
+    return undefined;
+  }
+}
+
+function branch(options) {
+  try {
+    const headRef = execa.sync('git', ['rev-parse', '--abbrev-ref', 'HEAD'], options).stdout;
+
+    if (headRef === 'HEAD') {
+      const branch = execa
+        .sync('git', ['show', '-s', '--pretty=%d', 'HEAD'], options)
+        .stdout.replace(/^\(|\)$/g, '')
+        .split(', ')
+        .find((branch) => branch.startsWith('origin/'));
+      return branch ? branch.match(/^origin\/(?<branch>.+)/)[1] : undefined;
+    }
+
+    return headRef;
+  } catch {
+    return undefined;
+  }
+}
+
+module.exports = {head, branch};