ix/internal/bindcallback.mjs

The Interactive Extensions for JavaScript

/**
 * @ignore
 */
export function bindCallback(func, thisArg, argCount) {
    if (typeof thisArg === 'undefined') {
        return func;
    }
    switch (argCount) {
        case 0:
            return function () {
                return func.call(thisArg);
            };
        case 1:
            return function (arg) {
                return func.call(thisArg, arg);
            };
        case 2:
            return function (value, index) {
                return func.call(thisArg, value, index);
            };
        case 3:
            return function (value, index, collection) {
                return func.call(thisArg, value, index, collection);
            };
    }
    return function () {
        return func.apply(thisArg, arguments);
    };
}

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