import { ProgrammingLanguage } from '../../programmingLanguage.js';
import { FindProgrammingLanguageByFileExtensionPayload, ProgrammingLanguageService } from './programmingLanguageService.js';
export declare class ProgrammingLanguageServiceImpl implements ProgrammingLanguageService {
    private readonly programmingLanguages;
    private readonly fileExtensionToProgrammingLanguageMapping;
    constructor();
    findProgrammingLanguageByFileExtension(payload: FindProgrammingLanguageByFileExtensionPayload): ProgrammingLanguage | null;
    findAllProgrammingLanguages(): ProgrammingLanguage[];
}
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