vscode keybindings

keybindings.json

// Place your key bindings in this file to override the defaults
[
    {
        "key": "alt+cmd+u",
        "command": "editor.action.transformToUppercase"
    },
    {
        "key": "shift+alt+cmd+u",
        "command": "editor.action.transformToLowercase"
    },
    // go to previous editor location when available
    {
        "key": "alt+cmd+left",
        "command": "workbench.action.navigateBack",
        "when": "editorFocus && canNavigateBack"
    },
    // go to next editor location when available
    {
        "key": "alt+cmd+right",
        "command": "workbench.action.navigateForward",
        "when": "editorFocus && canNavigateForward"
    }

]