---
title: Fixed Array in TypeScript
description: Fixed Array in TypeScript
image:
tags: typescript
robots: index, nofollow
lang: zh
dir: ltr
breaks: # newline style
GA: UA-168653916-1
disqus: hackmd
slideOptions:
transition: fade # https://revealjs.com/transitions/
theme: back
---

# Fixed Array in TypeScript

## 簡介

近期在研究如何用透過型別推斷定義出固定長度的陣列
本篇將嘗試解釋給大家聽

## 研究案例

先提這次的研究案例有兩個如下 (其實只有一個):
- 定義型別為 從 0 到 指定數值的陣列型別

export type Sequence<N extends number, R extends unknown[] = []> = 
  R['length'] extends N 
        ? R 
        : Sequence<N, [R['length'], ...R]>;
// example
const a: Sequence<5> = [0, 1, 2, 3, 4]; // typeof a is [0,1,2,3,4]
const b: Sequence<3> = [0, 1, 2]; // typeof a is [0,1,2]
// how to use
// ex: define type is 10 | 11| 12| 13| .... | 19 
type ArrayToUnion<T> = T extends any[] ? T[number] : T; // [1,2,3,4] to 1 | 2 | 3 | 4
type UnionSequence<T extends number> = ArrayToUnion<Sequence<T>>; 
// 0 - 19 union exclude 0 - 9 union should be 10 - 19 union
type Example = Exclude<UnionSequence<20>, UnionSequence<10>> 

- 定義一個固定長度且自訂型別的陣列與矩陣

type Fixed<N extends number, P = number, R extends P[] = []> = 
  R['length'] extends N 
        ? R 
        : Sequence<N, P, [P, ...R]>;
// example 
const a: Fixed<3> = [0,0,0]; //typeof a is [number, number, number]
const b: Fixed<4, string> = ['','','',''] //typeof b is [string, string, string, string]
// how to use
type Matrix<X extends number, Y extends number, T = number> = Fixed<X, Fixed<Y, T>>;
const m1: Matrix<2, 3> = [[0,0,0],[1,2,2]];
const m2: Matrix<3, 2, string> = [['0','0'],['1','2'],['','']];

想跳過解說直接使用的可以從這裡取得相關語法
[playground](https://www.typescriptlang.org/play?#code/C4TwDgpgBAyhCOBXCA7AxhAPAOShAHsKgCYDOUKiAtgEYQBOANFAEp6EnmIoDWKA9gHcUAbQC6UALxRxAPilQAUFFYiA5ABtUAc2AALNRIJEUZKLmUqrKgPysl16wC5YCZOizZmIgHR+WzCzqWii6BmJisgDcigD0sewAhlRgWopo-CikwFCJLnBIqBiYAKzy0iIADMwAjMwATMwAzMwALGJRUPFQoJD8AGa5UACW5FWMdY0t7emZ2VA0+W5FWE3lMtVQdVD1HV0JvRADQ6MbE4y7cQl6Qj38UIikEFfsLsQQ-cMo0Icj5DWVKAAHy2NRBNXq4KaIL8fmBWwAnEpfgBBej0RIgAAq-AAqihhplMFj1lj2CYzIkUCBxFA7FiRJRaAwJC4sZ1uiJJoxphJgPcavD6vCmvDWopfvjCSgCu5imTjJwKNQ6PR1miMdi8QSibKVsTZNElN1AQBaREPHUodhoDSId5QM1QJHcaVQUg3RAaYgLaAAqDmmouq0S8DQACi+GSqWg0kjtvtWClmT1Hkw9UqsmYyZlyzTAMNxtippLpbL5Yrlar1Zrtbr1cUocgUAAYsN8BBiDhyUqmarmAAFBR9hiBHumcgD2kVSIKSxBTQ6fSGcdmCyOKx2NiWDcuNsdrteKAD7ywgLHyIxboEaNaJQZLI5NB79udzBrBTjaqVPbxQ7HRI-hkEcmGVZlQJAsRZkfKBiBfA9MFaZhsnoL5tHWdQ1EYNQsJw7CVz-MNjhoICRBQtDkOAVDQko6jtFotCoO6G5BDuB4nibaAAFlEio9tMAADVXcgQOYABNYSwP7KAyWkED1n3N8BOYRSuzE5gSWiaD5ioGoXB4vj8HTZoMK-Rgf0YLkLguCIYgfHT6n03jUKMlodgY0JTLUSpcJ8sRLLUGpcPqQwAtwwwOiAA)

### 已知問題

這個做法目前仍存在上限問題
因為是依靠遞迴完成 所以 上限目前貌似為 999 個索引
如果要考量接續應用他們的話 大約是 900 個索引
也就是 如果寫 ```Sequence<1000>``` 會在開發階段就跳出 stackoverflow 的錯誤
後續遇到會再詳細解釋問題點

### 詳解

這個做法主要是利用 v3.7 所更新時
允許使用 recursive 來定義型別
以及 ```Array<T>.length``` 來產生數列
尤其是後者 想出這個方法的人真的是天才
在 typescript 中如果要宣告一個值的型別為 數字 1
通常就必須先行定義出該型別
這導致可能必須先進行一串 像是宣告 keyboard code 的靜態字串
而這裡不需要這樣做
但會有一點代價 請參考已知問題

---

這裡的型別定義宣告為

type Sequence<N extends number, R extends unknown[] = []> = 
  R['length'] extends N 
        ? R 
        : Sequence<N, [R['length'], ...R]>;

1. 除了 數列長度 ```N``` 之外 還宣告了一個陣列 ```R``` 並給予預設值空陣列
而這個空陣列就是用來產生數列的主要功臣
2. 判斷邏輯為 如果陣列 R 的長度是 N 就回傳陣列 R
否則回傳 ```Sequence<N, [R['length'], ...R]>```

把陣列 ```R``` 前面再加上一個數字做為新的泛型參數帶回 ```Sequence<N, R>``` 的 ```R```  
而有趣的事情就發生了  
此時因為陣列 ```R``` 多了一個元素 導致下一個 ```R['length']``` 比前一次多了 1  
使得這段語法會在 typescript 的 編譯器中進行遞迴  
使陣列 ```R``` 持續增加元素直到他的長度等於 ```R```  
這樣我們就可以透過 ```Sequence<N>``` 來取得指定長度的數列了  
有了這個 就可以做很多過去不好處理的型別或判斷  

### 好處

1. 在參數傳遞上 如果需要 指定個數的元素陣列時 不用在刻死一個專用的型別 來限制   
ex: 

//old
let numb5: [number,number,number,number,number] = [1,2,3,4,5];
function matrixAdd<T extends [[number, number], [number, number]]>(left: T, right: T);
//new
let numb5: Fixed<5> = [1,2,3,4,5];
function matrixAdd<X extends number, Y extends number>(left: Matrix<X, Y>, right: Matrix<X, Y>);

2. 減少 runtime 繁瑣的結構判斷, 改成於 designTime 就進行約定加以限制 以提升執行效能  
ex:

//old
function runNumb5(num5: number[]) {
if(num5.length === 5) return;
///....
}
//new
function runNumb5(num5: Fixed<5>) {
// num5 length exactly equals 5 without condition
///....
}

....more
還有很多可能性都可以從這個點延伸  

## 後記

我當初想做的其實就是 ```Matrix<X, Y>```  
當然在更早之前其實就已經開始思考該怎麼做  
只是以前無法實現  
而且這件事情對於對數理 數字有興趣的人
應該都可以腦洞大開



<style>
  body[style],
  body[style*="background-color: white;"] {
    background-color: #1e1e1e !important;
  }

  body {
    color: #abb2bf;
  }

  .ui-view-area,
  .markdown-body,
  .ui-content {
    background: #1e1e1e;
    color: #abb2bf;
  }

  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  p {
    color: #ddd;
  }

  hr {
    border-color: #6d6d6d;
  }

  .form-control {
    background: #333;
    color: #fff;
  }

  .form-control::placeholder,
  .form-control::-webkit-input-placeholder,
  .form-control:-moz-placeholder,
  .form-control::-moz-placeholder,
  .form-control:-ms-input-placeholder {
    color: #eee;
  }

  .header {
    background-color: #0e0e0e;
    border-color: #0e0e0e;
  }

  .navbar {
    background-color: #0e0e0e;
    border-color: #0e0e0e;
  }

  .navbar a {
    color: #eee !important;
  }

  .navbar .btn-group label {
    background-color: #0e0e0e;
    color: #eee;
    border-color: #555;
  }

  .navbar .btn-group label.btn-default:focus,
  .navbar .btn-group label.btn-default:hover {
    background-color: #2a2a2a;
    color: #eee;
    border-color: #555;
  }

  .navbar .btn-group label.active {
    background-color: #555;
    color: #eee;
    border-color: #555;
  }

  .navbar .btn-group label.active:focus,
  .navbar .btn-group label.active:hover {
    background-color: #555;
    color: #eee;
    border-color: #555;
  }

  .navbar-default .btn-link:focus,
  .navbar-default .btn-link:hover {
    color: #eee;
  }

  .navbar-default .navbar-nav>.open>a,
  .navbar-default .navbar-nav>.open>a:focus,
  .navbar-default .navbar-nav>.open>a:hover {
    background-color: #555;
  }

  .dropdown-header {
    color: #aaa;
  }

  .dropdown-menu {
    background-color: #222;
    border: 1px solid #555;
    border-top: none;
  }

  .dropdown-menu>li>a {
    color: #eee;
  }

  .dropdown-menu>li>a:focus,
  .dropdown-menu>li>a:hover {
    background-color: #555555;
    color: #eee;
  }

  .dropdown-menu .divider {
    background-color: #555;
  }

  .header .open .dropdown-menu {
    background-color: #202020;
  }

  .navbar .announcement-popover {
    background: #4F4F4F;
  }

  .navbar .announcement-popover .announcement-popover-header {
    background: #2e2e2e;
    border-bottom: 1px solid #2e2e2e;
  }

  .navbar .announcement-popover .announcement-popover-body {
    background: #4F4F4F;
    color: #eee;
  }

  .navbar .announcement-popover .announcement-popover-footer {
    background: #4F4F4F;
  }

  .navbar .announcement-area .caption.inverse {
    color: #eee;
  }

  .label-warning {
    background-color: #ffc107;
    color: #212529;
  }

  .list.row-layout li .item {
    border-color: #696c7d;
  }

  .list.row-layout li:nth-last-of-type(1) .item {
    border-bottom: none;
  }

  .list li .item {
    background: #1c1c1c;
  }

  .list li:hover .item,
  .list li:focus .item {
    background: #404040;
  }

  .list li .item h4 {
    color: #fff;
  }

  .list li p {
    color: #ccc;
  }

  .list li p i {
    font-style: normal;
  }

  .list li .item .content .tags span {
    background: #555;
  }

  .list li .item.wide .content .title a,
  .list li .item.wide .content .title a:focus,
  .list li .item.wide .content .title a:hover {
    color: #ddd;
  }

  .ui-item {
    color: #fff;
    opacity: 0.7;
  }

  .ui-item:hover,
  .ui-item:focus {
    opacity: 1;
    color: #fff;
  }

  .list li .item.wide hr {
    border-color: #6d6d6d;
  }

  .overview-widget-group .btn,
  .multi-select-dropdown-menu .ui-dropdown-label,
  .multi-select-dropdown-menu .dropdown-options,
  .form-control {
    border-color: #6d6d6d;
  }

  .multi-select-dropdown-menu .dropdown-options .ui-option:hover {
    background-color: #4d4d4d;
    color: #eee;
  }

  #overview-control-form #overview-keyword-input-container .select2-container {
    background-color: #3e4045 !important;
  }

  #overview-control-form #overview-keyword-input-container .select2-container .select2-choices {
    background-color: #3e4045;
  }

  .search {
    background-color: #3e4045;
    color: #eee;
  }

  .btn.btn-gray {
    background: #1b1b1b;
  }

  .btn.btn-gray:hover {
    background: #4d4d4d;
    color: #eee;
  }

  .search::placeholder,
  .search::-webkit-input-placeholder,
  .search:-moz-placeholder,
  .search::-moz-placeholder,
  .search:-ms-input-placeholder {
    color: #eee;
  }

  .btn.btn-gray {
    border-color: #6d6d6d;
    background: #333;
    color: #eee;
  }

  .select2-default {
    color: #eee !important;
  }

  .select2-results .select2-highlighted {
    background: #4d4d4d;
    color: #eee;
  }

  .select2-container-multi .select2-choices {
    background: #3e4045;
  }

  .select2-container-multi .select2-choices .select2-search-choice {
    background: #131313;
    color: #eee;
    border-color: #555;
    box-shadow: none;
  }

  .btn-default,
  .btn-default:focus {
    color: #eee;
    background-color: #2e2e2e;
    border-color: #6a6a6a;
  }

  .btn-default.active.focus,
  .btn-default.active:focus,
  .btn-default.active:hover,
  .btn-default:active.focus,
  .btn-default:active:focus,
  .btn-default:active:hover,
  .open>.dropdown-toggle.btn-default.focus,
  .open>.dropdown-toggle.btn-default:focus,
  .open>.dropdown-toggle.btn-default:hover {
    background: #737373;
  }

  .btn-default:hover {
    color: #fff;
    background-color: #7d7d7d;
    border-color: #6a6a6a;
  }

  .overview-widget-group .btn.active {
    background-color: #6a6a6a;
    color: #eee;
  }

  .overview-widget-group .btn:hover {
    background-color: #7d7d7d;
    color: #eee;
    border-color: #636363;
  }

  .overview-widget-group .slider.round {
    border-color: #ccc;
  }

  .overview-widget-group .slider.round:before {
    border-color: #ccc;
  }

  .overview-widget-group input:checked+.slider {
    background-color: #ccc;
  }

  .ui-category-description-icon a {
    color: #eee;
  }

  .item .ui-history-pin.active {
    color: #f00;
  }

  .ui-history-close {
    color: #eee;
    opacity: 0.5;
  }

  .pagination>li>a,
  .pagination>li>span {
    color: #eee;
    background-color: #2e2e2e;
    border-color: #6a6a6a;
  }

  .pagination>li>a:hover {
    color: #fff;
    background-color: #7d7d7d;
    border-color: #6a6a6a;
  }

  .pagination>.disabled>a,
  .pagination>.disabled>a:focus,
  .pagination>.disabled>a:hover,
  .pagination>.disabled>span,
  .pagination>.disabled>span:focus,
  .pagination>.disabled>span:hover {
    color: #eee;
    background-color: #2e2e2e;
    border-color: #6a6a6a;
  }

  .pagination.dark>li>a,
  .pagination.dark>li>span {
    color: #aaa;
  }

  .section .form-horizontal .form-group .btn-default {
    font-size: 16px;
    border-color: #6d6d6d;
    background-color: #333;
    color: #FFF;
  }

  .section .form-horizontal .form-group .btn-default:hover,
  .section .form-horizontal .form-group .btn-default:focus {
    background-color: #737373;
    color: #FFF;
  }

  .section .form-horizontal .form-control:focus {
    border-color: #bbb;
  }

  #notificationLabel,
  .ui-infobar .btn.ui-edit {
    color: #eee;
    border-color: #6a6a6a;
  }

  .ui-infobar__user-info li {
    color: #bbb;
  }

  footer {
    background: #101010;
    color: #bbb;
    border-top: 1px solid #454545;
  }

  footer a {
    color: #bbb;
  }

  .markdown-body h1,
  .markdown-body h2,
  .markdown-body h3,
  .markdown-body h4,
  .markdown-body h5,
  .markdown-body h6,
  .markdown-body hr,
  #doc>h1 {
    color: #ddd;
    border-color: #777 !important;
  }

  .h1 .small,
  .h1 small,
  .h2 .small,
  .h2 small,
  .h3 .small,
  .h3 small,
  .h4 .small,
  .h4 small,
  .h5 .small,
  .h5 small,
  .h6 .small,
  .h6 small,
  h1 .small,
  h1 small,
  h2 .small,
  h2 small,
  h3 .small,
  h3 small,
  h4 .small,
  h4 small,
  h5 .small,
  h5 small,
  h6 .small,
  h6 small {
    color: #ddd;
  }

  .markdown-body p {
    color: #ddd;
  }

  .markdown-body a {
    color: #7bf;
  }

  .markdown-body a
  {
    color: #7bf !important;
  }

  .markdown-body ul li,
  .markdown-body ol li {
    color: #ddd;
  }

  .markdown-body blockquote {
    color: #ddd;
    border-left-color: #777;
    font-size: 16px;
  }

  .markdown-body code,
  code {
    color: #dfdfdf !important;
    background-color: #424a55;
  }

  .markdown-body pre {
    background-color: #1e1e1e;
    border: 1px solid #555 !important;
    color: #dfdfdf;
  }

  blockquote .small,
  blockquote footer,
  blockquote small {
    color: #bbb;
  }

  .mark,
  mark {
    background-color: rgba(255, 255, 0, 0.32) !important;
    color: #ddd;
    margin: .1em;
    padding: .1em .2em;
  }

  .task-list-item-checkbox {
    margin: 0.18em 0 0.2em -1.3em !important;
  }

  .task-list-item input[type=checkbox] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    position: relative;
    top: -1px;
    margin: 0 1rem 0 0;
    cursor: pointer;
  }

  .task-list-item input[type=checkbox]::before {
    -webkit-transition: all 0.1s ease-in-out;
    -moz-transition: all 0.1s ease-in-out;
    transition: all 0.1s ease-in-out;
    content: "";
    position: absolute;
    left: 0;
    z-index: 1;
    width: 16px;
    height: 16px;
    border: 2px solid #F44336;
  }

  .task-list-item input[type=checkbox]:checked::before {
    -webkit-transform: rotate(-48deg);
    -moz-transform: rotate(-48deg);
    -ms-transform: rotate(-48deg);
    -o-transform: rotate(-48deg);
    transform: rotate(-48deg);
    height: 9px;
    border-color: #00E676;
    border-top-style: none;
    border-right-style: none;
  }

  .task-list-item input[type=checkbox]::after {
    content: "";
    position: absolute;
    top: -0.125rem;
    left: 0;
    width: 16px;
    height: 16px;
    background: #333;
    cursor: pointer;
  }

  .markdown-body table tr {
    background-color: #1e1e1e;
    border-top: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  }

  .markdown-body table tr:first-child {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .markdown-body table tr:nth-child(2n) {
    background-color: #333;
  }

  .markdown-body table tr th {
    color: #64B5F6;
  }

  .markdown-body table th,
  .markdown-body table td {
    border: none;
  }

  .markdown-body table tr th:first-child,
  .markdown-body table tr td:first-child {
    border-left: 1px solid rgba(255, 255, 255, 0.1);
  }

  .markdown-body table tr th:last-child,
  .markdown-body table tr td:last-child {
    border-right: 1px solid rgba(255, 255, 255, 0.1);
  }

  .markdown-body table tr td {
    color: #ddd;
  }

  .markdown-body pre.flow-chart,
  .markdown-body pre.sequence-diagram,
  .markdown-body pre.graphviz,
  .markdown-body pre.mermaid,
  .markdown-body pre.abc {
    background-color: #fff !important;
  }

  .alert h1,
  .alert h2,
  .alert h3,
  .alert h4,
  .alert h5,
  .alert h6,
  .alert p,
  .alert ul li,
  .alert ol li {
    color: #31708f;
  }

  .alert a {
    color: #002752;
    font-weight: 700;
  }

  .alert h1:first-child,
  .alert h2:first-child,
  .alert h3:first-child,
  .alert h4:first-child,
  .alert h5:first-child,
  .alert h6:first-child {
    margin-top: 0;
  }

  .markdown-body .alert>p {
    margin-top: 0px;
    margin-bottom: 10px;
  }

  .markdown-body .alert>ul,
  .markdown-body .alert>ol {
    margin-bottom: 16px;
  }

  .markdown-body .alert>*:last-child {
    margin-bottom: 0;
  }

  .alert-warning {
    background-color: #fff3cd;
    border-color: #ffeeba;
  }

  .ui-edit-area .ui-resizable-handle.ui-resizable-e {
    background-color: #303030;
    border: 1px solid #303030;
    box-shadow: none;
  }

  .ui-infobar {
    color: #999;
  }

  .permission-popover-btn-group .btn.focus,
  .permission-popover-btn-group .btn:active,
  .permission-popover-btn-group .btn:focus,
  .permission-popover-btn-group .btn.active {
    background-color: #6a6a6a !important;
    color: #eee !important;
    border-color: #555 !important;
  }

  .permission-popover-btn-group .btn:hover,
  .permission-popover-btn-group .btn.active:hover {
    background-color: #7d7d7d !important;
    color: #eee !important;
    border-color: #636363 !important;
  }

  .ui-delete-note a:hover,
  .ui-delete-note a:focus,
  .ui-delete-note a:active {
    background-color: #dc3545 !important;
  }

  .ui-invitee-invite {
    border-color: #6a6a6a !important;
  }

  .ui-invitee-invite:hover,
  .ui-invitee-invite:focus {
    background-color: #737373;
    color: #eee !important;
  }

  .ui-invitee.ui-invitee-list .ui-invitee-remove,
  .ui-invitee.ui-invitee-list .ui-invitee-remove:hover,
  .ui-invitee.ui-invitee-list .ui-invitee-remove:focus,
  .ui-invitee.ui-invitee-list .ui-invitee-remove:active {
    background-color: #dc3545;
    border: 1px solid #dc3545;
  }

  .select2-container {
    background: #202020;
  }

  .select2-container-multi .select2-choices .select2-search-field input {
    color: #eee;
  }

  .select2-container-multi .select2-choices .select2-search-field input.select2-active {
    color: #000;
  }

  .select2-drop {
    background: #202020;
    color: #eee;
  }

  .select2-results .select2-no-results,
  .select2-results .select2-searching,
  .select2-results .select2-ajax-error,
  .select2-results .select2-selection-limit {
    background: #202020;
  }

  .ui-toc-dropdown {
    width: 42vw;
    max-height: 90vh;
    overflow: auto;
    text-align: inherit;
  }

  .ui-toc-dropdown .nav>li>a {
    font-size: 14px;
    font-weight: bold;
    color: #ddd;
  }

  .ui-toc-dropdown .nav>.active:focus>a,
  .ui-toc-dropdown .nav>.active:hover>a,
  .ui-toc-dropdown .nav>.active>a {
    color: #7bf;
    border-left-color: #7bf;
  }

  .ui-toc-dropdown .nav>li>a:focus,
  .ui-toc-dropdown .nav>li>a:hover {
    color: #7bf;
    border-left-color: #7bf;
  }

  .ui-toc-dropdown.dropdown-menu {
    background: #333;
  }

  .toc-menu a {
    color: #ddd;
  }

  .toc-menu a:focus,
  .toc-menu a:hover {
    color: #7bf;
  }

  .cm-m-markdown {
    color: #ddd;
  }

  .cm-s-one-dark .cm-header,
  .cm-m-xml.cm-attribute {
    color: #ffa653;
  }

  .cm-s-one-dark .cm-string,
  .cm-s-one-dark .cm-variable-2 {
    color: #7bf;
  }

  .cm-m-markdown.cm-variable-3 {
    color: #ff7e7e;
  }

  .cm-s-one-dark .cm-link {
    color: #b0ee83;
  }

  .cm-s-one-dark .CodeMirror-linenumber {
    color: #666;
  }

  .cm-strong {
    color: #f4511e;
  }

  .cm-s-one-dark .cm-comment {
    color: #a9a9a9;
  }

  .cm-matchhighlight {
    color: #ffea00;
  }

  .cm-positive {
    color: #11bf64;
  }

  .cm-negative {
    color: #ff3e3e;
  }

  .dropdown-menu.CodeMirror-other-cursor {
    border: 2px solid #4d4d4d;
    background-color: #202020;
  }

  .dropdown-menu.CodeMirror-other-cursor li a {
    color: #ececec;
  }

  .topbar {
    background: #1e1e1e;
  }

  .btn.focus,
  .btn:focus,
  .btn:hover {
    color: #aaa;
  }

  .summary {
    background: #1e1e1e;
  }

  .summary,
  .toolbar {
    background: #1e1e1e !important;
    border-color: #4d4d4d !important;
  }

  .toolbar i {
    color: #fff;
  }

  .summary h1,
  .summary h2,
  .summary h3 .summary hr {
    color: #ddd;
    border-color: #777 !important;
  }

  .summary .nav>li>a {
    color: #7bf;
  }

  .summary .nav-pills>li.active>a,
  .summary .nav-pills>li.active>a:focus,
  .summary .nav-pills>li.active>a:hover {
    color: #ff9100;
  }

  .ui-summary-search {
    font-size: 16px;
    border: 1px solid #6D6D6D;
    background-color: #333;
    color: #FFF;
  }

  .summary h1,
  .summary h2,
  .summary h3,
  .summary h4,
  .summary h5,
  .summary h6 {
    border-color: #454545;
  }

  div[class$=container-mask] {
    background: #1e1e1e;
    z-index: 1;
    display: block;
  }

  .dropdown.ui-notification .ui-notification-label,
  .dropdown.ui-invitee .ui-invitee-label {
    color: #eee;
    border-color: #6a6a6a;
  }

  .ui-notification .dropdown-menu {
    border-top: 1px solid #555;
  }

  .modal-header {
    background-color: #2a2a2a;
  }

  .panel-default {
    border-color: #6d6d6d;
  }

  .panel-default>.panel-heading {
    background-color: #2a2a2a;
    color: #eee;
    border-color: #6d6d6d;
  }

  .panel-body {
    background: #2e2e2e;
  }

  .panel-body a {
    color: #7bf;
  }

  .table>tbody>tr>td,
  .table>tbody>tr>th,
  .table>tfoot>tr>td,
  .table>tfoot>tr>th,
  .table>thead>tr>td,
  .table>thead>tr>th {
    border-color: #6d6d6d;
  }

  .ui-comment-container .ui-comment-header {
    background-color: #2a2a2a;
    color: #eee;
    border-color: #6d6d6d;
  }

  .ui-comment-container {
    background-color: #2e2e2e;
    border-color: #6d6d6d;
  }

  .ui-comment-container .ui-comments-container .ui-comment .comment-author {
    color: #eee;
  }

  .ui-comment-container .ui-comments-container .ui-comment .timestamp {
    color: #aaa;
  }

  .ui-comment-container .ui-comments-container .ui-comment .comment-content {
    color: #eee;
  }

  .ui-comment-container .ui-comments-container .ui-comment .comment-menu {
    color: #eee;
  }

  .ui-comment-container .ui-comments-container .ui-comment .comment-menu .comment-dropdown-menu {
    background: #222;
    color: #eee;
    border-color: #555;
  }

  .ui-comment-container .ui-comments-container .ui-comment .comment-menu .comment-dropdown-menu>div:hover {
    background-color: #555555;
    color: #eee;
  }

  .ui-comment-container .ui-comments-container .ui-comment .comment-menu:hover,
  .ui-comment-container .ui-comments-container .ui-comment .comment-menu:active,
  .ui-comment-container .ui-comments-container .ui-comment .comment-menu.active {
    background-color: #737373;
    color: #eee;
  }

  .ui-comment-container .ui-comment-input-container {
    background-color: #3c3c3c;
  }

  .ui-comment-container textarea {
    background-color: #3e4045;
    color: #eee;
    border: 1px solid #6d6d6d;
  }

  .ui-comment-container textarea::placeholder,
  .ui-comment-container textarea::-webkit-input-placeholder,
  .ui-comment-container textarea:-moz-placeholder,
  .ui-comment-container textarea::-moz-placeholder,
  .ui-comment-container textarea:-ms-input-placeholder {
    color: #eee;
  }

  @keyframes highlight {
    0% {
      background-color: #3c3c3c;
    }

    30% {
      background-color: #3c3c3c;
    }

    100% {
      background-color: transparent;
    }
  }

  .template-content .modal-header {
    background: #2a2a2a;
  }

  .template-content .close {
    color: #fff;
  }

  .template-content .modal-title {
    color: #eee;
  }

  .template-content .ui-templates-container {
    border-color: #6d6d6d;
  }

  .ui-templates-container .ui-create-template-btn {
    background: #446fab;
    color: #fff;
  }

  .ui-template-list-filter .ui-template-list-filter-label,
  .ui-template-list-filter .ui-template-list-filter-label:hover {
    color: #eee;
  }

  .ui-template-list .list-group-item.active {
    background: #4d4d4d;
  }

  .ui-template-list .list-group-item.active:focus {
    background: #4d4d4d !important;
  }

  .list-group-item.active,
  .list-group-item.active:focus,
  .list-group-item.active:hover {
    color: #eee;
  }

  .ui-template-list .list-group-item .list-group-item-heading {
    color: #eee;
  }

  .ui-template-list .list-group-item.active .list-group-item-heading {
    color: #eee;
  }

  .ui-template-list .list-group-item:hover {
    background: #4d4d4d !important;
  }

  .ui-template-item-menu {
    color: #eee !important;
  }

  .ui-template-list .list-group-item {
    color: #fff;
  }

  .ui-template-list .list-group-item .dropdown-container.open {
    background-color: #2a2a2a;
  }

  .ui-template-list .list-group-item .dropdown-container:hover {
    background-color: #2a2a2a !important;
  }

  .template-menu .more-template {
    border-color: #6d6d6d;
  }

  .template-menu .more-template:hover {
    color: #eee;
    border-color: #6d6d6d;
  }

  .modal-content {
    background: #1f2226;
  }

  .modal-header {
    border-bottom: 1px solid #46484f;
  }

  .modal-footer {
    border-top: 1px solid #46484f;
  }

  a.list-group-item {
    background: #1f2226;
    color: #ddd;
    border: 1px solid #46484f;
  }

  a.list-group-item .list-group-item-heading {
    color: #ddd;
  }

  a.list-group-item:focus,
  a.list-group-item:hover {
    background: #434651;
    color: #ddd;
  }

  button.close {
    color: #ddd;
    opacity: .5;
  }

  .close:focus, .close:hover {
    color: #fff;
    opacity: .8;
  }

  .CodeMirror {
    background: #1f2226;
  }

  .CodeMirror-gutters {
    background: #1f2226;
    border-right: 1px solid rgba(204, 217, 255, 0.1);
  }

  .cm-s-default .cm-comment {
    color: #888;
  }

  .cm-s-default .cm-quote {
    color: #ddd;
  }

  .cm-s-default .cm-header {
    color: #ffa653;
  }

  .cm-s-default .cm-link {
    color: #b0ee83;
  }

  .cm-s-default .cm-string,
  .cm-s-default .cm-variable-2 {
    color: #7bf;
  }

  .cm-s-default .cm-def {
    color: #c678dd;
  }

  .cm-s-default .cm-number,
  .cm-s-default .cm-attribute,
  .cm-s-default .cm-qualifier,
  .cm-s-default .cm-plus,
  .cm-s-default .cm-atom {
    color: #eda35e;
  }

  .cm-s-default .cm-property,
  .cm-s-default .cm-variable,
  .cm-s-default .cm-variable-3,
  .cm-s-default .cm-operator,
  .cm-s-default .cm-bracket {
    color: #f76e79;
  }

  .cm-s-default .cm-keyword,
  .cm-s-default .cm-builtin,
  .cm-s-default .cm-tag {
    color: #98c379;
  }

  .modal-title {
    color: #ccc;
  }

  .modal-body {
    color: #ccc !important;
  }

  div[contenteditable]:empty:not(:focus):before {
    color: #aaa;
  }

  .CodeMirror pre {
    color: #ddd;
  }

  .CodeMirror pre span[style^="background-color: rgb(221, 251, 230)"] {
    background-color: #288c27 !important;
  }

  .CodeMirror pre span[style^="background-color: rgb(249, 215, 220)"] {
    background-color: #a52721 !important;
  }

  .hljs {
    background: #1E1E1E;
    color: #DCDCDC;
  }

  .hljs-keyword,
  .hljs-literal,
  .hljs-symbol,
  .hljs-name {
    color: #569CD6;
  }

  .hljs-link {
    color: #569CD6;
    text-decoration: underline;
  }

  .hljs-built_in,
  .hljs-type {
    color: #4EC9B0;
  }

  .hljs-number,
  .hljs-class {
    color: #B8D7A3;
  }

  .hljs-string,
  .hljs-meta-string {
    color: #D69D85;
  }

  .hljs-regexp,
  .hljs-template-tag {
    color: #d16969;
  }

  .hljs-title {
    color: #dcdcaa;
  }

  .hljs-subst,
  .hljs-function,
  .hljs-formula {
    color: #DCDCDC;
  }

  .hljs-comment,
  .hljs-quote {
    color: #57A64A;
  }

  .hljs-doctag {
    color: #608B4E;
  }

  .hljs-meta,
  .hljs-meta-keyword,
  .hljs-tag {
    color: #9B9B9B;
  }

  .hljs-variable,
  .hljs-template-variable {
    color: #BD63C5;
  }

  .hljs-params,
  .hljs-attr,
  .hljs-attribute,
  .hljs-builtin-name {
    color: #9CDCFE;
  }

  .hljs-section {
    color: gold;
  }

  .hljs-emphasis {
    font-style: italic;
  }

  .hljs-strong {
    font-weight: bold;
  }

  
  .hljs-code {
    font-family:'Monospace';
  }

  .hljs-bullet,
  .hljs-selector-tag,
  .hljs-selector-id,
  .hljs-selector-class,
  .hljs-selector-attr,
  .hljs-selector-pseudo {
    color: #D7BA7D;
  }

  .hljs-addition {
    background-color: #155a36;
    color: #dfdfdf;
    display: inline-block;
    width: 100%;
  }

  .hljs-deletion {
    background-color: #872e2e;
    color: #dfdfdf;
    display: inline-block;
    width: 100%;
  }

  code[class*="language-"],
  pre[class*="language-"] {
    color: #DCDCDC;
  }

  :not(pre)>code[class*="language-"],
  pre[class*="language-"] {
    background: #1E1E1E;
  }

  .token.comment,
  .token.block-comment,
  .token.prolog,
  .token.cdata {
    color: #57A64A;
  }

  .token.doctype,
  .token.punctuation {
    color: #9B9B9B;
  }

  .token.tag,
  .token.entity {
    color: #569CD6;
  }

  .token.attr-name,
  .token.namespace,
  .token.deleted,
  .token.property,
  .token.builtin {
    color: #9CDCFE;
  }

  .token.function,
  .token.function-name {
    color: #dcdcaa;
  }

  .token.boolean,
  .token.keyword,
  .token.important {
    color: #569CD6;
  }

  .token.number {
    color: #B8D7A3;
  }

  .token.class-name,
  .token.constant {
    color: #4EC9B0;
  }

  .token.symbol {
    color: #f8c555;
  }

  .token.rule {
    color: #c586c0;
  }

  .token.selector {
    color: #D7BA7D;
  }

  .token.atrule {
    color: #cc99cd;
  }

  .token.string,
  .token.attr-value {
    color: #D69D85;
  }

  .token.char {
    color: #7ec699;
  }

  .token.variable {
    color: #BD63C5;
  }

  .token.regex {
    color: #d16969;
  }

  .token.operator {
    color: #DCDCDC;
    background: transparent;
  }

  .token.url {
    color: #67cdcc;
  }

  .token.important,
  .token.bold {
    font-weight: bold;
  }

  .token.italic {
    font-style: italic;
  }

  .token.entity {
    cursor: help;
  }

  .token.inserted {
    color: green;
  }

  .gist .gist-file {
    border: 1px solid #555;
  }

  .gist .gist-data {
    background-color: #1e1e1e;
    border-bottom: 1px solid #555;
  }

  .gist .gist-meta {
    background-color: #424a55;
    color: #eee;
  }

  .gist .gist-meta a {
    color: #eee;
  }

  .gist .highlight {
    color: #eee;
    background-color: #1e1e1e;
  }

  .gist .blob-num {
    color: #afafaf;
  }

  .gist .blob-code-inner {
    color: #dfdfdf;
  }

  .pl-mb {
    color: #fff !important;
  }

  .pl-c {
    color: #57A64A !important;
  }

  .pl-ent {
    color: #569CD6 !important;
  }

  .pl-e {
    color: #9CDCFE !important;
  }

  .pl-en {
    color: #4EC9B0 !important;
  }

  .pl-smi {
    color: #9CDCFE !important;
  }

  .pl-k {
    color: #569cd6 !important;
  }

  .pl-c1,
  .pl-s .pl-v {
    color: #4EC9B0 !important;
  }

  .pl-pds,
  .pl-s,
  .pl-s .pl-pse .pl-s1,
  .pl-sr,
  .pl-sr .pl-cce,
  .pl-sr .pl-sra,
  .pl-sr .pl-sre,
  .pl-s .pl-s1 {
    color: #D69D85 !important;
  }

  .pl-s .pl-s1 .pl-pse {
    color: #c5dbff !important;
  }

  .diff-table .pl-c,
  .diff-table .pl-ent,
  .diff-table .pl-e,
  .diff-table .pl-en,
  .diff-table .pl-pds,
  .diff-table .pl-s,
  .diff-table .pl-s .pl-s1,
  .diff-table .pl-s .pl-pse .pl-s1,
  .diff-table .pl-sr,
  .diff-table .pl-sr .pl-cce,
  .diff-table .pl-sr .pl-sra,
  .diff-table .pl-sr .pl-sre,
  .diff-table .pl-k,
  .diff-table .pl-smi,
  .diff-table .pl-c1,
  .diff-table .pl-v {
    color: #eee !important;
  }
</style>