chore: adding a changelog script, from Angular

hansl · hansl · commit 1fa0c31c8e93 · 2016-07-04T11:25:45.000-07:00
diff --git a/scripts/publish/changelog.js b/scripts/publish/changelog.js
@@ -0,0 +1,41 @@
+#!/usr/bin/env node
+'use strict';
+
+/**
+ * Just a small command-line wrapper around the conventional-changelog npm module
+ * (https://www.npmjs.com/package/conventional-changelog), which also prepends
+ * changes to CHANGELOG.md.
+ *
+ * Appends CHANGELOG.md with the changes between tag and HEAD.
+ * NOTE: only `fix`, `feat`, `perf` and `revert` commits are used
+ * see: https://github.com/conventional-changelog/conventional-changelog/blob/v0.2.1/presets/angular.js#L24
+ */
+
+var fs = require('fs');
+var cl = require('conventional-changelog');
+const exec = require('child_process').exec;
+
+var changelogStream = fs.createWriteStream('CHANGELOG-delta.md');
+
+if (process.argv.length < 3) {
+  console.log('Usage: ./scripts/publish/changelog.js <start-tag>');
+  process.exit(-1);
+}
+
+var config = {
+  preset: 'angular',
+  releaseCount: 1,
+};
+
+var prependDelta = function() {
+  exec('cat CHANGELOG-delta.md CHANGELOG.md > CHANGELOG-new.md;' +
+       'mv CHANGELOG-new.md CHANGELOG.md;' +
+       'rm CHANGELOG-delta.md');
+}
+
+cl(config, null, { from: process.argv[2] })
+    .on('error', function(err) {
+      console.error('Failed to generate changelog: ' + err);
+    })
+    .pipe(changelogStream)
+    .on('close', prependDelta);
