PromptTuner MCP

// Typo corrections and abbreviation expansions for rule-based refinement // Common typos and their corrections - Map for O(1) correction lookup const TYPO_MAP = new Map<string, string>([ ['teh', 'the'], ['adn', 'and'], ['taht', 'that'], ['recieve', 'receive'], ['occured', 'occurred'], ['seperate', 'separate'], ['definately', 'definitely'], ['untill', 'until'], ['becuase', 'because'], ['wich', 'which'], ['wiht', 'with'], ['hte', 'the'], ['dont', "don't"], ['wont', "won't"], ['cant', "can't"], ['im', "I'm"], ['youre', "you're"], ['theyre', "they're"], ['thier', 'their'], ['alot', 'a lot'], ['accross', 'across'], ['acheive', 'achieve'], ['accomodate', 'accommodate'], ['apparantly', 'apparently'], ['begining', 'beginning'], ['beleive', 'believe'], ['calender', 'calendar'], ['collegue', 'colleague'], ['comming', 'coming'], ['concious', 'conscious'], ['dissapear', 'disappear'], ['enviroment', 'environment'], ['existance', 'existence'], ['finaly', 'finally'], ['goverment', 'government'], ['grammer', 'grammar'], ['havent', "haven't"], ['independant', 'independent'], ['knowlege', 'knowledge'], ['liason', 'liaison'], ['mispell', 'misspell'], ['neccessary', 'necessary'], ['noticable', 'noticeable'], ['occurence', 'occurrence'], ['peice', 'piece'], ['posession', 'possession'], ['prefered', 'preferred'], ['recomend', 'recommend'], ['refered', 'referred'], ['relevent', 'relevant'], ['remeber', 'remember'], ['resistence', 'resistance'], ['responsability', 'responsibility'], ['succesful', 'successful'], ['tommorow', 'tomorrow'], ['truely', 'truly'], ['usefull', 'useful'], ['writting', 'writing'], ['funtion', 'function'], ['paramater', 'parameter'], ['retun', 'return'], ['varible', 'variable'], ['libary', 'library'], ['enpoint', 'endpoint'], ['algoritm', 'algorithm'], ['dependancy', 'dependency'], ]); /** * Combined regex for single-pass typo detection. * Much faster than testing 68 individual patterns - O(n) vs O(68n). * Uses word boundaries to match whole words only. */ const TYPO_WORDS = [...TYPO_MAP.keys()]; const COMBINED_TYPO_REGEX = new RegExp(`\\b(${TYPO_WORDS.join('|')})\\b`, 'gi'); /** * Fix all typos in a single pass using combined regex. * Returns the corrected text and list of corrections made. * * Performance: Single regex match + Map lookup per typo found, * instead of 68 separate regex.test() calls. */ export function fixTyposBatch(text: string): { fixed: string; corrections: string[]; } { const corrections: string[] = []; const fixed = text.replace(COMBINED_TYPO_REGEX, (match) => { const lowerMatch = match.toLowerCase(); const correction = TYPO_MAP.get(lowerMatch); if (correction) { corrections.push(`Fixed "${match}" → "${correction}"`); // Preserve original case for first letter if original was capitalized const firstChar = match[0]; const correctionFirst = correction[0]; if ( firstChar && correctionFirst && firstChar === firstChar.toUpperCase() ) { return correctionFirst.toUpperCase() + correction.slice(1); } return correction; } return match; }); return { fixed, corrections }; } // Export precompiled typo patterns for tests and faster per-pattern matching. function escapeForRegex(s: string): string { return s.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\$&'); } export const TYPO_PATTERNS = TYPO_WORDS.map((typo) => ({ typo, correction: TYPO_MAP.get(typo) ?? '', regex: new RegExp(`\\b(${escapeForRegex(typo)})\\b`, 'gi'), })); // Legacy per-pattern export removed (dead code). Use `fixTyposBatch()` instead for typo corrections.