How to write React component path reference @?

the directory of common components is as follows

clipboard.png

the reference path when writing is as follows

import PageHeaderWrapper from "@/components/PageHeaderWrapper";

here @ represents the root path of src.
I"d like to ask you to write this way. I haven"t encountered it before. This is antd pro scaffolding.

Oct.09,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b331f1-2be76.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b331f1-2be76.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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