How to read the source code of the front-end framework angular,react,vue

ask the gods how to read the source code of the framework and read it with purpose.
try to download the vue source code in github. I don"t know what to do after npm I. Will the source code work? How do I run?

Angular4 react.js vue.js
Mar.30,2022

http://hcysun.me/vue-design/

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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-64f5-1b2b0ea-4e6cf.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2b0ea-4e6cf.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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