areFollowingPatterns in the codesignal

areFollowingPatterns.ts

function areFollowingPatterns(strings: string[], patterns: string[]): boolean {
    for (let i: number = 0; i < strings.length; i++) {
        if (patterns.indexOf(patterns[i]) !== strings.indexOf(strings[i])) return false;
    }
    return true;
}


or 
function areFollowingPatterns(strings: string[], patterns: string[]): boolean {
    let hashStrings= {};
    let hashPatterns= {};
    for(let i=0;i<strings.length;i++){
        if(hashStrings[strings[i]]===undefined){
            hashStrings[strings[i]]=patterns[i];
        }
        else{
            if(patterns[i]!==hashStrings[strings[i]]) return false;
        }
        if(hashPatterns[patterns[i]]===undefined){
            hashPatterns[patterns[i]]=strings[i];
        }
        else{
            if(strings[i]!==hashPatterns[patterns[i]]) return false;
        }
    }
    return true;
}