async function getFramework()

in src/templates/dotnet/executeDotnetTemplateCommand.ts [48:99]
39 lines of code
11 McCabe index (conditional complexity)

async function getFramework(context: IActionContext, workingDirectory: string | undefined): Promise<string> {
    if (!cachedFramework) {
        let versions: string = '';
        try {
            versions += await cpUtils.executeCommand(undefined, workingDirectory, 'dotnet', '--version');
        } catch {
            // ignore
        }

        try {
            versions += await cpUtils.executeCommand(undefined, workingDirectory, 'dotnet', '--list-sdks');
        } catch {
            // ignore
        }

        // Prioritize "LTS", then "Current", then "Preview"
        const netVersions: string[] = ['6.0', '5.0', '3.1'];
        const semVersions: SemVer[] = netVersions.map(v => semVerCoerce(v) as SemVer);

        let pickedVersion: SemVer | undefined;

        // Try to get a GA version first (i.e. "1.0.0")
        for (const semVersion of semVersions) {
            const regExp: RegExp = new RegExp(`^\\s*${semVersion.major}\\.${semVersion.minor}\\.[0-9]+(\\s|$)`, 'm');
            if (regExp.test(versions)) {
                pickedVersion = semVersion;
                break;
            }
        }

        // Otherwise allow a preview version (i.e. "1.0.0-alpha")
        if (!pickedVersion) {
            for (const semVersion of semVersions) {
                const regExp: RegExp = new RegExp(`^\\s*${semVersion.major}\\.${semVersion.minor}\\.`, 'm');
                if (regExp.test(versions)) {
                    pickedVersion = semVersion;
                    break;
                }
            }
        }


        if (!pickedVersion) {
            context.errorHandling.suppressReportIssue = true;
            throw new Error(localize('noMatchingFramework', 'You must have the [.NET Core SDK](https://aka.ms/AA4ac70) installed to perform this operation. See [here](https://aka.ms/AA1tpij) for supported versions.'));
        } else {
            cachedFramework = `${pickedVersion.major < 4 ? 'netcoreapp' : 'net'}${pickedVersion.major}.${pickedVersion.minor}`;
        }
    }

    return cachedFramework;
}