How to use the @finos/perspective.TYPE_AGGREGATES function in @finos/perspective

function get_aggregates_with_defaults(aggregate_attribute, schema, cols) {
    const found = new Set();
    const aggregates = [];
    for (const col of aggregate_attribute) {
        const type = schema[col.column];
        const type_config = get_type_config(type);
        found.add(col.column);
        if (type_config.type || type) {
            if (col.op === "" || perspective.TYPE_AGGREGATES[type_config.type || type].indexOf(col.op) === -1) {
                col.op = type_config.aggregate;
            }
            aggregates.push(col);
        } else {
            console.warn(`No column "${col.column}" found (specified in aggregates attribute).`);
        }
    }

    // Add columns detected from dataset.
    for (const col of cols) {
        if (!found.has(col)) {
            aggregates.push({
                column: col,
                op: get_type_config(schema[col]).aggregate
            });
        }