zed/styles/.zed/settings.json

// Folder-specific settings
//
// For a full list of overridable settings, and general information on folder-specific settings,
// see the documentation: https://docs.zed.dev/configuration/configuring-zed#folder-specific-settings
{
    "languages": {
        "TypeScript": {
            "tab_size": 4
        },
        "TSX": {
            "tab_size": 4
        },
        "JavaScript": {
            "tab_size": 4
        },
        "JSON": {
            "tab_size": 4
        }
    }
}