Function checkFileWithLang

packages/common/cases.ts:11–14

(s: CompilableSource, errMsg: string)

        user_extra_files: [],
    };
    const checkFileWithLang = (s: CompilableSource, errMsg: string) => {
        if (typeof s === 'string') return { lang: 'auto', file: checkFile(s, errMsg) };
        return { lang: s.lang, file: checkFile(s.file, errMsg) };
    };
    if (cfg.type === 'objective') {
        if (cfg.checker || cfg.interactor || cfg.validator) {
            throw new Error('You cannot use checker, interactor or validator for objective questions');