add client

2020-04-14 22:20:02 +08:00
parent 32dd3302f8
commit d98223a6c6
80 changed files with 8461 additions and 20 deletions
@@ -0,0 +1,29 @@
+# poke-game-front-ts
+
+## Project setup
+```
+yarn install
+```
+
+### Compiles and hot-reloads for development
+```
+yarn run serve
+```
+
+### Compiles and minifies for production
+```
+yarn run build
+```
+
+### Run your tests
+```
+yarn run test
+```
+
+### Lints and fixes files
+```
+yarn run lint
+```
+
+### Customize configuration
+See [Configuration Reference](https://cli.vuejs.org/config/).
@@ -0,0 +1,5 @@
+module.exports = {
+  presets: [
+    '@vue/cli-plugin-babel/preset'
+  ]
+}
@@ -0,0 +1,27 @@
+{
+  "name": "poke-game-front-ts",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "serve": "vue-cli-service serve",
+    "build": "vue-cli-service build",
+    "lint": "vue-cli-service lint"
+  },
+  "dependencies": {
+    "core-js": "^3.6.4",
+    "vue": "^2.6.11",
+    "vue-class-component": "^7.2.3",
+    "vue-property-decorator": "^8.4.1",
+    "vue-router": "^3.1.6",
+    "vuex": "^3.1.3"
+  },
+  "devDependencies": {
+    "@vue/cli-plugin-babel": "^4.3.0",
+    "@vue/cli-plugin-typescript": "^4.3.0",
+    "@vue/cli-service": "^4.3.0",
+    "less": "^3.0.4",
+    "less-loader": "^5.0.0",
+    "typescript": "~3.8.3",
+    "vue-template-compiler": "^2.6.11"
+  }
+}
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width,initial-scale=1.0">
+    <link rel="icon" href="<%= BASE_URL %>favicon.ico">
+    <title><%= htmlWebpackPlugin.options.title %></title>
+  </head>
+  <body>
+    <noscript>
+      <strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
+    </noscript>
+    <div id="app"></div>
+    <!-- built files will be auto injected -->
+  </body>
+</html>
@@ -0,0 +1,29 @@
+<template>
+  <div id="app">
+    <img alt="Vue logo" src="./assets/logo.png">
+    <HelloWorld msg="Welcome to Your Vue.js + TypeScript App"/>
+  </div>
+</template>
+
+<script lang="ts">
+import { Component, Vue } from 'vue-property-decorator';
+import HelloWorld from './components/HelloWorld.vue';
+
+@Component({
+  components: {
+    HelloWorld,
+  },
+})
+export default class App extends Vue {}
+</script>
+
+<style lang="less">
+#app {
+  font-family: Avenir, Helvetica, Arial, sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  text-align: center;
+  color: #2c3e50;
+  margin-top: 60px;
+}
+</style>
@@ -0,0 +1,58 @@
+<template>
+  <div class="hello">
+    <h1>{{ msg }}</h1>
+    <p>
+      For a guide and recipes on how to configure / customize this project,<br>
+      check out the
+      <a href="https://cli.vuejs.org" target="_blank" rel="noopener">vue-cli documentation</a>.
+    </p>
+    <h3>Installed CLI Plugins</h3>
+    <ul>
+      <li><a href="https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-babel" target="_blank" rel="noopener">babel</a></li>
+      <li><a href="https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-typescript" target="_blank" rel="noopener">typescript</a></li>
+    </ul>
+    <h3>Essential Links</h3>
+    <ul>
+      <li><a href="https://vuejs.org" target="_blank" rel="noopener">Core Docs</a></li>
+      <li><a href="https://forum.vuejs.org" target="_blank" rel="noopener">Forum</a></li>
+      <li><a href="https://chat.vuejs.org" target="_blank" rel="noopener">Community Chat</a></li>
+      <li><a href="https://twitter.com/vuejs" target="_blank" rel="noopener">Twitter</a></li>
+      <li><a href="https://news.vuejs.org" target="_blank" rel="noopener">News</a></li>
+    </ul>
+    <h3>Ecosystem</h3>
+    <ul>
+      <li><a href="https://router.vuejs.org" target="_blank" rel="noopener">vue-router</a></li>
+      <li><a href="https://vuex.vuejs.org" target="_blank" rel="noopener">vuex</a></li>
+      <li><a href="https://github.com/vuejs/vue-devtools#vue-devtools" target="_blank" rel="noopener">vue-devtools</a></li>
+      <li><a href="https://vue-loader.vuejs.org" target="_blank" rel="noopener">vue-loader</a></li>
+      <li><a href="https://github.com/vuejs/awesome-vue" target="_blank" rel="noopener">awesome-vue</a></li>
+    </ul>
+  </div>
+</template>
+
+<script lang="ts">
+import { Component, Prop, Vue } from 'vue-property-decorator';
+
+@Component
+export default class HelloWorld extends Vue {
+  @Prop() private msg!: string;
+}
+</script>
+
+<!-- Add "scoped" attribute to limit CSS to this component only -->
+<style scoped lang="less">
+h3 {
+  margin: 40px 0 0;
+}
+ul {
+  list-style-type: none;
+  padding: 0;
+}
+li {
+  display: inline-block;
+  margin: 0 10px;
+}
+a {
+  color: #42b983;
+}
+</style>
@@ -0,0 +1,12 @@
+import Vue from 'vue';
+import App from './App.vue';
+import router from './router';
+import store from './store';
+
+Vue.config.productionTip = false;
+
+new Vue({
+  router,
+  store,
+  render: (h) => h(App),
+}).$mount('#app');
@@ -0,0 +1,27 @@
+import Vue from 'vue';
+import VueRouter, { RouteConfig } from 'vue-router';
+import Home from '../views/Home.vue';
+
+Vue.use(VueRouter);
+
+const routes: RouteConfig[] = [
+  {
+    path: '/',
+    name: 'Home',
+    component: Home,
+  },
+  {
+    path: '/about',
+    name: 'About',
+    // route level code-splitting
+    // this generates a separate chunk (about.[hash].js) for this route
+    // which is lazy-loaded when the route is visited.
+    component: () => import(/* webpackChunkName: "about" */ '../views/About.vue'),
+  },
+];
+
+const router = new VueRouter({
+  routes,
+});
+
+export default router;
@@ -0,0 +1,13 @@
+import Vue, { VNode } from 'vue';
+
+declare global {
+  namespace JSX {
+    // tslint:disable no-empty-interface
+    interface Element extends VNode {}
+    // tslint:disable no-empty-interface
+    interface ElementClass extends Vue {}
+    interface IntrinsicElements {
+      [elem: string]: any;
+    }
+  }
+}
@@ -0,0 +1,4 @@
+declare module '*.vue' {
+  import Vue from 'vue';
+  export default Vue;
+}
@@ -0,0 +1,15 @@
+import Vue from 'vue';
+import Vuex from 'vuex';
+
+Vue.use(Vuex);
+
+export default new Vuex.Store({
+  state: {
+  },
+  mutations: {
+  },
+  actions: {
+  },
+  modules: {
+  },
+});
@@ -0,0 +1,5 @@
+<template>
+  <div class="about">
+    <h1>This is an about page</h1>
+  </div>
+</template>
@@ -0,0 +1,18 @@
+<template>
+  <div class="home">
+    <img alt="Vue logo" src="../assets/logo.png">
+    <HelloWorld msg="Welcome to Your Vue.js App"/>
+  </div>
+</template>
+
+<script>
+// @ is an alias to /src
+import HelloWorld from '@/components/HelloWorld.vue'
+
+export default {
+  name: 'Home',
+  components: {
+    HelloWorld
+  }
+}
+</script>
@@ -0,0 +1,39 @@
+{
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "esnext",
+    "strict": true,
+    "jsx": "preserve",
+    "importHelpers": true,
+    "moduleResolution": "node",
+    "experimentalDecorators": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "sourceMap": true,
+    "baseUrl": ".",
+    "types": [
+      "webpack-env"
+    ],
+    "paths": {
+      "@/*": [
+        "src/*"
+      ]
+    },
+    "lib": [
+      "esnext",
+      "dom",
+      "dom.iterable",
+      "scripthost"
+    ]
+  },
+  "include": [
+    "src/**/*.ts",
+    "src/**/*.tsx",
+    "src/**/*.vue",
+    "tests/**/*.ts",
+    "tests/**/*.tsx"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}
@@ -0,0 +1,19 @@
+{
+  "defaultSeverity": "warning",
+  "extends": [
+    "tslint:recommended"
+  ],
+  "linterOptions": {
+    "exclude": [
+      "node_modules/**"
+    ]
+  },
+  "rules": {
+    "indent": [true, "spaces", 2],
+    "interface-name": false,
+    "no-consecutive-blank-lines": false,
+    "object-literal-sort-keys": false,
+    "ordered-imports": false,
+    "quotemark": [true, "single"]
+  }
+}
@@ -0,0 +1,12 @@
+sudo: false
+language: node_js
+node_js:
+  - '10'
+before_install:
+  - npm i npminstall -g
+install:
+  - npminstall
+script:
+  - npm run ci
+after_script:
+  - npminstall codecov && codecov
@@ -0,0 +1,12 @@
+2020-04-14 22:10:45,972 INFO 36442 [egg:logger] init all loggers with options: {"dir":"/Users/jorky/code/TexasPokerGame/server/logs/game-node-center","encoding":"utf8","env":"local","level":"INFO","consoleLevel":"INFO","disableConsoleAfterReady":false,"outputJSON":false,"buffer":true,"appLogName":"app.log","coreLogName":"core.log","agentLogName":"agent.log","errorLogName":"error.log","coreLogger":{"consoleLevel":"WARN"},"allowDebugAtProd":false,"type":"agent"}
+2020-04-14 22:10:45,983 INFO 36442 [egg:core] dump config after load, 6ms
+2020-04-14 22:10:46,034 INFO 36442 [egg-watcher] Start watching: ["/Users/jorky/code/TexasPokerGame/server/src/app","/Users/jorky/code/TexasPokerGame/server/src/lib","/Users/jorky/code/TexasPokerGame/server/src/service","/Users/jorky/code/TexasPokerGame/server/src/config","/Users/jorky/code/TexasPokerGame/server/src/app.ts","/Users/jorky/code/TexasPokerGame/server/src/agent.ts","/Users/jorky/code/TexasPokerGame/server/src/interface.ts"]
+2020-04-14 22:10:46,034 INFO 36442 [egg-watcher] Start watching: "/Users/jorky/code/TexasPokerGame/server/src/app"
+2020-04-14 22:10:46,035 INFO 36442 [egg-watcher] Start watching: "/Users/jorky/code/TexasPokerGame/server/src/lib"
+2020-04-14 22:10:46,035 INFO 36442 [egg-watcher] Start watching: "/Users/jorky/code/TexasPokerGame/server/src/service"
+2020-04-14 22:10:46,035 INFO 36442 [egg-watcher] Start watching: "/Users/jorky/code/TexasPokerGame/server/src/config"
+2020-04-14 22:10:46,035 INFO 36442 [egg-watcher] Start watching: "/Users/jorky/code/TexasPokerGame/server/src/app.ts"
+2020-04-14 22:10:46,036 INFO 36442 [egg-watcher] Start watching: "/Users/jorky/code/TexasPokerGame/server/src/agent.ts"
+2020-04-14 22:10:46,036 INFO 36442 [egg-watcher] Start watching: "/Users/jorky/code/TexasPokerGame/server/src/interface.ts"
+2020-04-14 22:10:46,037 INFO 36442 [egg-watcher:agent] watcher start success
+2020-04-14 22:10:46,045 INFO 36442 [egg:core] dump config after ready, 5ms
@@ -0,0 +1,49 @@
+2020-04-14 22:10:47,071 INFO 36443 [egg:logger] init all loggers with options: {"dir":"/Users/jorky/code/TexasPokerGame/server/logs/game-node-center","encoding":"utf8","env":"local","level":"INFO","consoleLevel":"INFO","disableConsoleAfterReady":false,"outputJSON":false,"buffer":true,"appLogName":"app.log","coreLogName":"core.log","agentLogName":"agent.log","errorLogName":"error.log","coreLogger":{"consoleLevel":"WARN"},"allowDebugAtProd":false,"type":"application"}
+2020-04-14 22:10:47,096 INFO 36443 [egg-multipart] stream mode enable
+2020-04-14 22:10:47,154 INFO 36443 [egg-redis] server connecting redis://:***@127.0.0.1:6379/0
+2020-04-14 22:10:47,176 INFO 36443 [egg-mysql] connecting root@127.0.0.1:3306/poker
+2020-04-14 22:10:47,342 INFO 36443 [egg-static] starting static serve /public/ -> /Users/jorky/code/TexasPokerGame/server/src/app/public
+2020-04-14 22:10:47,343 INFO 36443 [egg-security] use noopen middleware
+2020-04-14 22:10:47,344 INFO 36443 [egg-security] use nosniff middleware
+2020-04-14 22:10:47,345 INFO 36443 [egg-security] use xssProtection middleware
+2020-04-14 22:10:47,345 INFO 36443 [egg-security] use xframe middleware
+2020-04-14 22:10:47,346 INFO 36443 [egg-security] use dta middleware
+2020-04-14 22:10:47,346 INFO 36443 [egg-security] compose 5 middlewares into one security middleware
+2020-04-14 22:10:47,355 INFO 36443 [egg:core] dump config after load, 6ms
+2020-04-14 22:10:47,370 INFO 36443 [egg-redis] client connect success
+2020-04-14 22:10:47,380 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
+2020-04-14 22:10:47,380 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
+2020-04-14 22:10:47,390 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
+2020-04-14 22:10:47,391 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
+2020-04-14 22:10:47,394 INFO 36443 [egg-redis] instance[0] status OK, client ready
+2020-04-14 22:10:47,400 INFO 36443 [egg-watcher:application] watcher start success
+2020-04-14 22:10:47,434 INFO 36443 [egg-mysql] instance[0] status OK, rds currentTime: Tue Apr 14 2020 22:10:47 GMT+0800 (China Standard Time)
+2020-04-14 22:10:47,458 INFO 36443 [egg:core] dump config after ready, 5ms
@@ -0,0 +1,6 @@
+2020-04-14 22:10:47,463 INFO 36442 [Timer] /Users/jorky/code/TexasPokerGame/server/node_modules/egg-multipart/app/schedule/clean_tmpdir.js next time will execute after 22752539ms at 2020-04-15 04:30:00.002
+2020-04-14 22:10:47,463 INFO 36442 [Timer] /Users/jorky/code/TexasPokerGame/server/node_modules/egg-logrotator/app/schedule/clean_log.js next time will execute after 6552537ms at 2020-04-15 00:00:00.000
+2020-04-14 22:10:47,463 INFO 36442 [Timer] /Users/jorky/code/TexasPokerGame/server/node_modules/egg-logrotator/app/schedule/rotate_by_file.js next time will execute after 6553537ms at 2020-04-15 00:00:01.000
+2020-04-14 22:10:47,096 INFO 36443 [egg-schedule]: register schedule /Users/jorky/code/TexasPokerGame/server/node_modules/egg-multipart/app/schedule/clean_tmpdir.js
+2020-04-14 22:10:47,096 INFO 36443 [egg-schedule]: register schedule /Users/jorky/code/TexasPokerGame/server/node_modules/egg-logrotator/app/schedule/clean_log.js
+2020-04-14 22:10:47,096 INFO 36443 [egg-schedule]: register schedule /Users/jorky/code/TexasPokerGame/server/node_modules/egg-logrotator/app/schedule/rotate_by_file.js
@@ -0,0 +1,32 @@
+2020-04-14 22:10:47,379 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
+2020-04-14 22:10:47,380 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
+2020-04-14 22:10:47,381 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
+2020-04-14 22:10:47,390 ERROR 36443 nodejs.ReplyError: Ready check failed: NOAUTH Authentication required.
+    at parseError (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:193:12)
+    at parseType (/Users/jorky/code/TexasPokerGame/server/node_modules/redis/node_modules/redis-parser/lib/parser.js:303:14)
+command: "INFO"
+code: "NOAUTH"
+pid: 36443
+hostname: 192.168.0.100
+
@@ -35,7 +35,7 @@ export class Player {
  // commandRecord: Array<string> = [];
  constructor(config: IPlayer = { counter: 0, position: 0, userId: '' }) {
    this.counter = config.counter;
-    this.position = config.position;
+    this.position = config.position || 0;
    this.userId = config.userId;
    if (this.position === 0) {
      this.type = EPlayerType.DEALER;
@@ -62,7 +62,7 @@ export class Player {
   * @param {number} prevSize
   * @example action('command:raise:10')
   */
-  action(commandString: string, prevSize?: number) {
+  action(commandString: string, prevSize: number = 0) {
    const commandArr = commandString.split(':');
    const command = commandArr[0];
    const raiseSize = Number(commandArr[1]);
@@ -46,6 +46,10 @@ export class PokerGame {
  }

  init(users: IPlayer[]) {
+    if (this.playerSize < 2) {
+      throw 'player Inadequate';
+    }
+
    this.status = EGameStatus.GAME_READY;
    // init playerLink
    this.playerLink = this.setPlayer(users);
@@ -60,16 +64,20 @@ export class PokerGame {
    // sb blind
    const SBPlayerNode = this.playerLink.getNode(1);
    const SBPlayer = SBPlayerNode.node;
-    // big blind
-    const BBPlayerNode = SBPlayerNode.next;
-    const BBPlayer = BBPlayerNode.node;
-    SBPlayer.action(`small_blind:${this.smallBlind}`);
-    BBPlayer.action(`big_blind:${this.smallBlind * 2}`);
-    this.prevSize = this.smallBlind * 2;
-    // add counter to pot
-    // this.pots.push(this.smallBlind * 3);
-    this.pot = this.smallBlind * 3;
-    // todo straddle
+    if (SBPlayerNode.next) {
+      // big blind
+      const BBPlayerNode: ILinkNode<Player> = SBPlayerNode.next;
+      const BBPlayer = BBPlayerNode.node;
+      SBPlayer.action(`small_blind:${this.smallBlind}`);
+      BBPlayer.action(`big_blind:${this.smallBlind * 2}`);
+      this.prevSize = this.smallBlind * 2;
+      // add counter to pot
+      // this.pots.push(this.smallBlind * 3);
+      this.pot = this.smallBlind * 3;
+      // todo straddle
+    } else {
+      throw 'player Inadequate';
+    }
  }

  play() {
@@ -78,7 +86,7 @@ export class PokerGame {
  }

  action(commandString: string) {
-    if (this.status === EGameStatus.GAME_ACTION) {
+    if (this.status === EGameStatus.GAME_ACTION && this.currPlayer.next) {
      const commandArr = commandString.split(':');
      const command = commandArr[0];
      let size = Number(commandArr[1]);
@@ -152,7 +160,11 @@ export class PokerGame {
    if (this.commonCard.length === 0
      && this.currPlayer.node.actionSize === this.smallBlind * 2
      && this.currPlayer.node.type !== EPlayerType.BIG_BLIND) {
-      this.currPlayer = this.currPlayer.next;
+      if (this.currPlayer.next) {
+        this.currPlayer = this.currPlayer.next;
+      } else {
+        throw 'currPlayer.next is null';
+      }
      return;
    }
    // action has allin, sum the allin player ev_pot
@@ -259,11 +271,13 @@ export class PokerGame {

  getPlayers(type= 'all', withoutPlayers?: Player[]) {
    let players = [];
-    let nextPlayer = this.playerLink.link;
+    let nextPlayer: ILinkNode<Player> = this.playerLink.link;
    let i = 0;
    while (i < this.playerSize) {
      players.push(nextPlayer.node);
-      nextPlayer = nextPlayer.next;
+      if (nextPlayer.next) {
+        nextPlayer = nextPlayer.next;
+      }
      i++;
    }
    players = type === 'all' ? [ ...players, ...this.allInPlayers ] : players;
@@ -366,7 +380,9 @@ export class PokerGame {
      while (j < this.playerSize) {
        player = playerLink.node;
        player.handCard.push(this.poker.getCard());
-        playerLink = playerLink.next;
+        if (playerLink.next) {
+          playerLink = playerLink.next;
+        }
        j++;
      }
    }
@@ -20,9 +20,9 @@ export class Link<T> {
      next: null,
    };
    nodes.forEach((node, key) => {
-      const currNode = {
+      const currNode: ILinkNode<T> = {
        node,
-        next: null as ILinkNode<T>,
+        next: null,
      };
      // head
      if (key === 0) {
@@ -15,7 +15,7 @@
    "strict": true,
    "strictPropertyInitialization": false,
    "stripInternal": true,
-    "strictNullChecks": false,
+    "strictNullChecks": true,
    "suppressImplicitAnyIndexErrors": true,
    "target": "ES2018"
  },