fix(core): fix streak count logic to count from 1

__tests__/index.test.js

@@ -1,6 +1,7 @@
 const { ask, save, getCurrentStreak, ensureDB } = require('../index')
 const moment = require('moment')
 const path = require('path')
+const fs = require('fs-jetpack')
 const DB_PATH = path.resolve('./__mocks__/db.json')
 const ANSWERS = ['soda pop', '$$$', 'toffee', 'mustaches']
 
@@ -24,6 +25,10 @@ beforeEach(done => {
   ensureDB(DB_PATH).then(done)
 })
 
+afterEach(done => {
+  fs.removeAsync(DB_PATH).then(done)
+})
+
 test('should accept n number prompts', done => {
   let TIMES = 3
   let count = 0
@@ -66,5 +71,5 @@ test('should save output to db', done => {
 test('should keep track of n days of latest streak', () => {
   const db = require('../__mocks__/dummy_db.json')
   const streak = getCurrentStreak(db, '20171228')
-  expect(streak).toEqual(5)
+  expect(streak).toEqual(4)
 })

index.js

@@ -38,9 +38,7 @@ const getCurrentStreak = (db = {}, now) => {
   const latest = now || getLatestDate(keys)
   let streak = 1
   let prev = getPrevious(db, latest)
-  if (prev) {
-    streak++
-  }
+
   while (prev) {
     streak++
     prev = getPrevious(db, prev)