search in the all file a function sublime code example

Example 1: sublime search all files with extension

Press Ctrl+Shift+f
Type in Find: SomethingToSearch
Type in Where (without quotes): '*.js' or '*.php' or '*.vue'

Restrict search to a file path:
Type in Find: SomethingToSearch
Type in Where (without quotes): '/some/path/to/dir/, *.js' or '/some/path/to/dir/, *.php' or '/some/path/to/dir/, *.vue'

Example 2: sublime search all files with extension in folder or project

Press Ctrl+Shift+f
Type in Find: SomethingToSearch
Type in Where (without quotes):
/path/to/folder, *.js
/path/to/folder, *.php
/path/to/folder, *.vue