feat: Expose release count option

Author: Luca Huettner

command.js

@@ -73,6 +73,11 @@ const yargs = require('yargs')
     type: 'string',
     default: defaults.tagPrefix
   })
+  .option('release-count', {
+    describe: 'How many releases of changelog you want to generate. It counts from the upcoming release. Useful when you forgot to generate any previous changelog. Set to 0 to regenerate all.',
+    type: 'number',
+    default: defaults.releaseCount
+  })
   .option('tag-force', {
     describe: 'Allow tag replacement',
     type: 'boolean',

defaults.js

@@ -8,6 +8,7 @@ const defaults = {
   commitAll: false,
   silent: false,
   tagPrefix: 'v',
+  releaseCount: 1,
   scripts: {},
   skip: {},
   dryRun: false,

lib/lifecycles/changelog.js

@@ -34,7 +34,8 @@ function outputChangelog (args, newVersion) {
     const changelogStream = conventionalChangelog({
       debug: args.verbose && console.info.bind(console, 'conventional-changelog'),
       preset: presetLoader(args),
-      tagPrefix: args.tagPrefix
+      tagPrefix: args.tagPrefix,
+      releaseCount: args.releaseCount
     }, context, { merges: null, path: args.path }, args.parserOpts, args.writerOpts)
       .on('error', function (err) {
         return reject(err)