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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
/**
* Determines if we should attempt to launch a browser for authentication
* based on the user's environment.
*
* This is an adaptation of the logic from the Google Cloud SDK.
* @returns True if the tool should attempt to launch a browser.
*/
export function shouldAttemptBrowserLaunch(): boolean {
// A list of browser names that indicate we should not attempt to open a
// web browser for the user.
const browserBlocklist = ['www-browser'];
const browserEnv = process.env.BROWSER;
if (browserEnv && browserBlocklist.includes(browserEnv)) {
return false;
}
// Common environment variables used in CI/CD or other non-interactive shells.
if (process.env.CI || process.env.DEBIAN_FRONTEND === 'noninteractive') {
return false;
}
// The presence of SSH_CONNECTION indicates a remote session.
// We should not attempt to launch a browser unless a display is explicitly available
// (checked below for Linux).
const isSSH = !!process.env.SSH_CONNECTION;
// On Linux, the presence of a display server is a strong indicator of a GUI.
if (process.platform === 'linux') {
// These are environment variables that can indicate a running compositor on
// Linux.
const displayVariables = ['DISPLAY', 'WAYLAND_DISPLAY', 'MIR_SOCKET'];
const hasDisplay = displayVariables.some((v) => !!process.env[v]);
if (!hasDisplay) {
return false;
}
}
// If in an SSH session on a non-Linux OS (e.g., macOS), don't launch browser.
// The Linux case is handled above (it's allowed if DISPLAY is set).
if (isSSH && process.platform !== 'linux') {
return false;
}
// For non-Linux OSes, we generally assume a GUI is available
// unless other signals (like SSH) suggest otherwise.
// The `open` command's error handling will catch final edge cases.
return true;
}
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