Added isElectron module

function isElectron() {

    // Renderer process

    if (typeof window !== 'undefined' && typeof window.process === 'object' && window.process.type === 'renderer') {

        return true;

    }

    // Main process

    if (typeof process !== 'undefined' && typeof process.versions === 'object' && !!process.versions.electron) {

        return true;

    }

    // Detect the user agent when the `nodeIntegration` option is set to true

    if (typeof navigator === 'object' && typeof navigator.userAgent === 'string' && navigator.userAgent.indexOf('Electron') >= 0) {

        return true;

    }

    return false;

}

export default isElectron;

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