Get only unique values in array

getOnlyUniqueValuesInArray.js

function getOnlyUniqueValuesInArray(array) {
    const arrayLen = array.length;
    /** @type {Map<any, number>} */
    const map = new Map();

    for (let i = 0 ; i < arrayLen ; i++) {
        const value = array[i];

        map.set(value, map.getOrInsert(value, 0) + 1);
    }

    return array.filter(value => map.get(value) === 1);
}

console.assert(
    getOnlyUniqueValuesInArray([10, 2, 3, 4, 5, 10, 6, 5, 0, 9, 2])
        .join(',') === [3, 4, 6, 0, 9].join(',')
);

console.assert(
    getOnlyUniqueValuesInArray(['10', 2, 3, 4, 5, 10, 'test', 5, 0, 9, 2])
        .join(',') === ['10', 3, 4, 10, 'test', 0, 9].join(',')
);