Code is fine, just movies.foreach() was not functioning and had to be replaced with movies.find() to always return a target movie.

Best,

function movieDirectors(array) {
    let movies = [];

    class Movie {
        constructor(name, director, date) {
            this.name = name;
            this.director = director;
            this.date = date;
        }
    }
    let contains = function (movieName) {
        // let movie = null;
        let movie = movies.find(m =>m.name === movieName);

        // movies.forEach(m => m.name === movieName ? movie = m : movie = null);
        return movie;
    }

    for (let i = 0; i < array.length; i++) {
        let command = array[i].split(' ');

        if (command.includes('addMovie')) {
            let name = command.slice(1, command.length).join(' ');
            movies.push(new Movie(name, null, null));
        } else if (command.includes('directedBy')) {
            let name1 = command.slice(0, command.indexOf('directedBy')).join(' ');
            // if (contains(name1) !== null) {
            if (contains(name1) !== undefined) {
                let movie = contains(name1);
                movie.director = command.slice(command.indexOf('directedBy') + 1, command.length).join(' ');
            }
        } else if (command.includes('onDate')) {
            let name2 = command.slice(0, command.indexOf('onDate')).join(' ');
            // if (contains(name2) !== null) {
            if (contains(name2) !== undefined) {
                let movie = contains(name2);
                movie.date = command.slice(command.indexOf('onDate') + 1, command.length).join(' ');
            }
        }
    }
    movies.forEach(m => m.director != null && m.name != null && m.date != null ? console.log(JSON.stringify(m)) : null);
}

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