Function findConfig

static/main.ts:311–389

(
    defaultConfig: GoldenLayoutConfig,
    options: CompilerExplorerOptions,
    defaultLangId: string,
)

}

function findConfig(
    defaultConfig: GoldenLayoutConfig,
    options: CompilerExplorerOptions,
    defaultLangId: string,
): GoldenLayoutConfig {
    let config: any;
    if (!options.embedded) {
        if (options.slides) {
            const presentation = new Presentation(unwrap(window.compilerExplorerOptions.slides).length);
            const currentSlide = presentation.currentSlide;
            if (currentSlide < options.slides.length) {
                config = options.slides[currentSlide];
            } else {
                presentation.currentSlide = 0;
                config = options.slides[0];
            }
            if (
                isMobileViewer() &&
                window.compilerExplorerOptions.slides &&
                window.compilerExplorerOptions.slides.length > 1
            ) {
                $('#share').remove();
                $('.ui-presentation-control').removeClass('d-none');
                $('.ui-presentation-first').on('click', presentation.first.bind(presentation));
                $('.ui-presentation-prev').on('click', presentation.previous.bind(presentation));
                $('.ui-presentation-next').on('click', presentation.next.bind(presentation));
            }
        } else {
            if (options.config) {
                config = options.config;
            } else {
                try {
                    config = deserialiseState(window.location.hash.substring(1));
                } catch {
                    // #3518 Alert the user that the url is invalid
                    const alertSystem = new Alert();
                    alertSystem.alert(
                        'Decode Error',
                        'An error was encountered while decoding the URL, the last locally saved configuration will ' +
                            "be used if present.<br/><br/>Make sure the URL you're using hasn't been truncated, " +
                            'otherwise if you believe your URL is valid please let us know on ' +
                            '<a href="https://github.com/compiler-explorer/compiler-explorer/issues">our github</a>.',
                        {isError: true},
                    );
                }
            }

            if (config) {
                // replace anything in the default config with that from the hash
                config = _.extend(defaultConfig, config);
            }
            if (!config) {
                const savedState = sessionThenLocalStorage.get('gl', null);
                if (savedState) config = JSON.parse(savedState);
            }
            if (!config?.content || config.content?.length === 0) {
                config = defaultConfig;
            }