1. 找到源碼的map文件，然后下載
2. 使用npm 安裝reverse-sourcemap
npm install --global reverse-sourcemap
3. 進行還原操作
╰─ reverse-sourcemap --help
reverse-sourcemap - Reverse engineering JavaScript and CSS sources from sourcemaps
Usage: reverse-sourcemap [options] <file|directory>
-h, --help Help and usage instructions
-V, --version Version number
-v, --verbose Verbose output, will print which file is currently being processed
-o, --output-dir String Output directory - default: .
-M, --match String Regular expression for matching and filtering files - default: \.map$
-r, --recursive Recursively search matching files
╰─ reverse-sourcemap --output-dir ./xxx app.1c489f3ee0a84d6f8c46.js.map
reverse-sourcemap - Reverse engineering JavaScript and CSS sources from sourcemaps
分析源碼，找到利用的接口
參考：
https://www.npmjs.com/package/reverse-sourcemap
https://yukaii.tw/blog/2017/02/21/restore-source-code-from-sourcemap-file/
https://yukaii.tw/blog/2017/02/21/restore-source-code-from-sourcemap-file/