list-json.js use moment format error

[anran758]

I encountered some problems when using hexo-related-popular-posts:

05:41:55.845 ERROR Render HTML failed: 2020/02/22/flexbox-use-cases/index.html
TypeError: Cannot read property 'replace' of null
    at Hexo.externalLinkFilter (/Users/anran/project_my/blog/node_modules/hexo/lib/plugins/filter/after_render/external_link.js:22:15)
    at Hexo.tryCatcher (/Users/anran/project_my/blog/node_modules/bluebird/js/release/util.js:16:23)
    at Hexo.<anonymous> (/Users/anran/project_my/blog/node_modules/bluebird/js/release/method.js:15:34)
    at /Users/anran/project_my/blog/node_modules/hexo/lib/extend/filter.js:62:52
    at tryCatcher (/Users/anran/project_my/blog/node_modules/bluebird/js/release/util.js:16:23)
    at Object.gotValue (/Users/anran/project_my/blog/node_modules/bluebird/js/release/reduce.js:166:18)
    at Object.gotAccum (/Users/anran/project_my/blog/node_modules/bluebird/js/release/reduce.js:155:25)
    at Object.tryCatcher (/Users/anran/project_my/blog/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/anran/project_my/blog/node_modules/bluebird/js/release/promise.js:547:31)
    at Promise._settlePromise (/Users/anran/project_my/blog/node_modules/bluebird/js/release/promise.js:604:18)
    at Promise._settlePromiseCtx (/Users/anran/project_my/blog/node_modules/bluebird/js/release/promise.js:641:10)
    at _drainQueueStep (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:97:12)
    at _drainQueue (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:86:9)
    at Async._drainQueues (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:102:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:15:14)
    at processImmediate (internal/timers.js:439:21)

After debugging, I found that the error is in list-json.js. in the getElm function tried to add ret.date, But an error occurred during the assignment.

The test code and test log are as follows:

// /node_modules/hexo-related-popular-posts/lib/list-json.js

        if (inOptions.isDate && list.date != '') {
            console.log('\nlist.date', list.date)
            console.log('\nlist.date1', moment(moment()))
            console.log('\nlist.date2', moment(list.date))

            const formatDate = moment(list.date)
            console.log('\nformatDate', formatDate)

            // ret.date =  moment(list.date).format(config.date_format || 'YYYY-MM-DD')
        }

05:50:42.164 INFO  Hexo is running at http://localhost:9000 . Press Ctrl+C to stop.
05:50:42.240 DEBUG Database saved
05:54:18.184 DEBUG Rendering HTML post: 2020/02/22/flexbox-use-cases/index.html

getElm [Function: getElm] 5 


list.date {
  _isAMomentObject: true,
  _i: '2020-02-05T13:36:54.000Z',
  _isUTC: false,
  _pf: {
    empty: false,
    unusedTokens: [],
    unusedInput: [],
    overflow: -2,
    charsLeftOver: 0,
    nullInput: false,
    invalidEra: null,
    invalidMonth: null,
    invalidFormat: false,
    userInvalidated: false,
    iso: false,
    parsedDateParts: [],
    era: null,
    meridiem: null,
    rfc2822: false,
    weekdayMismatch: false
  },
  _locale: {
    _calendar: {
      sameDay: '[Today at] LT',
      nextDay: '[Tomorrow at] LT',
      nextWeek: 'dddd [at] LT',
      lastDay: '[Yesterday at] LT',
      lastWeek: '[Last] dddd [at] LT',
      sameElse: 'L'
    },
    _longDateFormat: {
      LTS: 'h:mm:ss A',
      LT: 'h:mm A',
      L: 'MM/DD/YYYY',
      LL: 'MMMM D, YYYY',
      LLL: 'MMMM D, YYYY h:mm A',
      LLLL: 'dddd, MMMM D, YYYY h:mm A'
    },
    _invalidDate: 'Invalid date',
    _dayOfMonthOrdinalParse: {},
    _relativeTime: {
      future: 'in %s',
      past: '%s ago',
      s: 'a few seconds',
      ss: '%d seconds',
      m: 'a minute',
      mm: '%d minutes',
      h: 'an hour',
      hh: '%d hours',
      d: 'a day',
      dd: '%d days',
      w: 'a week',
      ww: '%d weeks',
      M: 'a month',
      MM: '%d months',
      y: 'a year',
      yy: '%d years'
    },
    _months: [
      'January',   'February',
      'March',     'April',
      'May',       'June',
      'July',      'August',
      'September', 'October',
      'November',  'December'
    ],
    _monthsShort: [
      'Jan', 'Feb', 'Mar',
      'Apr', 'May', 'Jun',
      'Jul', 'Aug', 'Sep',
      'Oct', 'Nov', 'Dec'
    ],
    _week: { dow: 0, doy: 6 },
    _weekdays: [
      'Sunday',
      'Monday',
      'Tuesday',
      'Wednesday',
      'Thursday',
      'Friday',
      'Saturday'
    ],
    _weekdaysMin: [
      'Su', 'Mo',
      'Tu', 'We',
      'Th', 'Fr',
      'Sa'
    ],
    _weekdaysShort: [
      'Sun', 'Mon',
      'Tue', 'Wed',
      'Thu', 'Fri',
      'Sat'
    ],
    _meridiemParse: {},
    _eras: [ [Object], [Object] ],
    _abbr: 'en',
    _config: {
      calendar: [Object],
      longDateFormat: [Object],
      invalidDate: 'Invalid date',
      dayOfMonthOrdinalParse: {},
      relativeTime: [Object],
      months: [Array],
      monthsShort: [Array],
      week: [Object],
      weekdays: [Array],
      weekdaysMin: [Array],
      weekdaysShort: [Array],
      meridiemParse: {},
      eras: [Array],
      abbr: 'en'
    },
    _dayOfMonthOrdinalParseLenient: {}
  },
  _d: '2020-02-05T13:36:54.000Z',
  _isValid: true,
  _z: null
}

list.date1 Moment<2020-05-07T13:54:18+08:00>
05:54:18.571 ERROR Render HTML failed: 2020/02/22/flexbox-use-cases/index.html
TypeError: Cannot read property 'replace' of null
    at Hexo.externalLinkFilter (/Users/anran/project_my/blog/node_modules/hexo/lib/plugins/filter/after_render/external_link.js:22:15)
    at Hexo.tryCatcher (/Users/anran/project_my/blog/node_modules/bluebird/js/release/util.js:16:23)
    at Hexo.<anonymous> (/Users/anran/project_my/blog/node_modules/bluebird/js/release/method.js:15:34)
    at /Users/anran/project_my/blog/node_modules/hexo/lib/extend/filter.js:62:52
    at tryCatcher (/Users/anran/project_my/blog/node_modules/bluebird/js/release/util.js:16:23)
    at Object.gotValue (/Users/anran/project_my/blog/node_modules/bluebird/js/release/reduce.js:166:18)
    at Object.gotAccum (/Users/anran/project_my/blog/node_modules/bluebird/js/release/reduce.js:155:25)
    at Object.tryCatcher (/Users/anran/project_my/blog/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/anran/project_my/blog/node_modules/bluebird/js/release/promise.js:547:31)
    at Promise._settlePromise (/Users/anran/project_my/blog/node_modules/bluebird/js/release/promise.js:604:18)
    at Promise._settlePromiseCtx (/Users/anran/project_my/blog/node_modules/bluebird/js/release/promise.js:641:10)
    at _drainQueueStep (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:97:12)
    at _drainQueue (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:86:9)
    at Async._drainQueues (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:102:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/Users/anran/project_my/blog/node_modules/bluebird/js/release/async.js:15:14)
    at processImmediate (internal/timers.js:439:21)

It can be found in the log: moment caused an error while initializing list.date, which caused the subsequent formatDate log to not be output.

If I delete the code about moment (list.date), hexo will work normally.

The current configuration of hexo is as follows:

hexo: 4.2.0
hexo-cli: 3.1.0
os: Darwin 17.7.0 darwin x64
node: 12.13.1
v8: 7.7.299.13-node.16
uv: 1.33.1
zlib: 1.2.11
brotli: 1.0.7
ares: 1.15.0
modules: 72
nghttp2: 1.39.2
napi: 5
llhttp: 1.1.4
http_parser: 2.8.0
openssl: 1.1.1d
cldr: 35.1
icu: 64.2
tz: 2019c
unicode: 12.1

hexo-blog@0.0.0 /Users/anran/project_my/blog
├── babel-runtime@6.26.0
├── hexo@4.2.0
├── hexo-all-minifier@0.5.3
├── hexo-deployer-git@1.0.0
├── hexo-generator-archive@0.1.5
├── hexo-generator-baidu-sitemap@0.1.6
├── hexo-generator-category@0.1.3
├── hexo-generator-feed@1.2.2
├── hexo-generator-index@0.2.1
├── hexo-generator-search@2.4.0
├── hexo-generator-sitemap@1.2.0
├── hexo-generator-tag@0.2.0
├── hexo-leancloud-counter-security@1.5.0
├── hexo-related-popular-posts@4.0.0
├── hexo-renderer-ejs@0.3.1
├── hexo-renderer-marked@1.0.1
├── hexo-renderer-stylus@0.3.3
├── hexo-server@0.3.3