License: GNU General Public License v3.0
This game tells the story of a will which is trapped in a terminal.
At IceLava!
Feel free to dive in! Open an issue or submit PRs.
Please make sure your code passing the eslint check.
本人在第四关（检查文件系统）卡关了，选择了修改存档直接跳到第五关。
希望可以知道如何通过第四关。
首先做的很有趣！
两个疑似 bug：
两个建议：
建议 tab 改 2/4 spaces 不然看起来太难受了。
还有就是滚动条的位置和样式我也建议改一改。
考虑防抖
进入后啥也没有，只有上方一个外部带有白色阴影的圆角矩形
项目真有意思。
不过echo的时候出了一点逝：字符串可以输出反斜杠表示的字符，这是正常的情况还是不正常的情况呢？
然而这就会导致非常不正常的逝，例如输入"\a"（即发声符号）时，canvas会产生混乱。
考虑输入以下命令：
echo a\aa\aa\aa\aa\aa\aa\aa\aa\aa\aa\aa\a
canvas就可能变成这样：
（不过效果可能有所不同，一切正常也有可能，只用多逝几次）
建议处理一下这些字符串，或者干脆针对一下反斜杠？
如题，在 /home 和 /dev 下执行ls命令都会引发错误，在/bin中则不会。不影响cd和cat等。
$ pwd
/
$ ls /home
core dumped: Cannot read properties of undefined (reading '0')
$ ls /dev
core dumped: Cannot read properties of undefined (reading '0')
F12控制台报错：
TypeError: Cannot read properties of undefined (reading '0')
at command.js:229:49
at Array.filter (<anonymous>)
at Object.ls [as func] (command.js:229:31)
at term.startLoop (loop.js:89:16)
浏览器：Chromium103.0.5060.134
存档json
附加信息：
$ ls -al /home
drwxr-x--- myself undefined
drwxr-x--- myself undefined
-rwxr-x--- myself .history
$ ls -al /dev
crw-rw-rw- root undefined
brw-rw---- root undefined
brw-rw---- root undefined
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