Ctrl+nでexplorerをトグルするようにすることでVimのnerdtreeと使い勝手を統一するやつ

keybindings.json

// Place your key bindings in this file to override the defaults
[
    {
        "key": "ctrl+e",
        "command": "-workbench.action.quickOpen"
    },
    {
        "key": "ctrl+e",
        "command": "-workbench.action.quickOpenNavigateNextInFilePicker",
        "when": "inFilesPicker && inQuickOpen"
    },
    {
        "key": "ctrl+b",
        "command": "-workbench.action.toggleSidebarVisibility"
    },
    {
        "key": "ctrl+n",
        "command": "workbench.view.explorer"
    },
    {
        "key": "ctrl+n",
        "command": "workbench.action.toggleSidebarVisibility",
        "when": "activeViewlet == 'workbench.view.explorer' || activeViewlet == 'workbench.view.search'|| activeViewlet == 'workbench.view.scm'|| activeViewlet == 'workbench.view.debug'|| activeViewlet == 'workbench.view.extensions' || activeViewlet == 'workbench.view.extension.test'|| activeViewlet == 'workbench.view.extension.bookmarks'|| activeViewlet == 'workbench.view.extension.project-manager' || activeViewlet == 'workbench.view.extension.gitlens'|| activeViewlet == 'workbench.view.extension.todo-tree-container'|| activeViewlet == 'snippet-explorer'"
    }
]

ref: https://stackoverflow.com/questions/37815472/vscode-keybinding-to-hide-explorer