Add --starting-date

Fixes #181

README.md

@@ -41,6 +41,7 @@ Options:
       --tag-pattern [regex]           # override regex pattern for version tags
       --tag-prefix [prefix]           # prefix used in version tags, default: v
       --starting-version [tag]        # specify earliest version to include in changelog
+      --starting-date [yyyy-mm-dd]    # specify earliest date to include in changelog
       --sort-commits [property]       # sort commits by property [relevance, date, date-desc, subject, subject-desc], default: relevance
       --release-summary               # display tagged commit message body as release summary
       --unreleased-only               # only output unreleased changes

src/run.js

@@ -44,6 +44,7 @@ const getOptions = async argv => {
     .option('--tag-pattern <regex>', 'override regex pattern for version tags')
     .option('--tag-prefix <prefix>', 'prefix used in version tags')
     .option('--starting-version <tag>', 'specify earliest version to include in changelog')
+    .option('--starting-date <yyyy-mm-dd>', 'specify earliest date to include in changelog')
     .option('--sort-commits <property>', `sort commits by property [relevance, date, date-desc], default: ${DEFAULT_OPTIONS.sortCommits}`)
     .option('--release-summary', 'use tagged commit message body as release summary')
     .option('--unreleased-only', 'only output unreleased changes')

src/tags.js

@@ -27,12 +27,11 @@ const fetchTags = async (options, remote) => {
     })
   }
 
-  return tags
-    .map(enrichTag(options))
-    .slice(0, getLimit(tags, options))
+  const enriched = tags.map(enrichTag(options))
+  return enriched.slice(0, getLimit(enriched, options))
 }
 
-const getLimit = (tags, { unreleasedOnly, startingVersion }) => {
+const getLimit = (tags, { unreleasedOnly, startingVersion, startingDate }) => {
   if (unreleasedOnly) {
     return 1
   }
@@ -42,6 +41,9 @@ const getLimit = (tags, { unreleasedOnly, startingVersion }) => {
       return index + 1
     }
   }
+  if (startingDate) {
+    return tags.filter(t => t.isoDate >= startingDate).length
+  }
   return tags.length
 }
 

test/tags.js

@@ -101,6 +101,12 @@ describe('fetchTags', () => {
     expect(await fetchTags({ ...options, startingVersion: 'v0.2.2' })).to.have.lengthOf(3)
   })
 
+  it('supports --starting-date', async () => {
+    expect(await fetchTags({ ...options, startingDate: '2000-03-01' })).to.have.lengthOf(5)
+    expect(await fetchTags({ ...options, startingDate: '2000-03-02' })).to.have.lengthOf(4)
+    expect(await fetchTags({ ...options, startingDate: '2000-05-01' })).to.have.lengthOf(1)
+  })
+
   it('supports partial semver tags', async () => {
     mock('cmd', () => Promise.resolve([
       'v0.1---2000-02-01',