Function memoize

docs/app/js/sanddance-app.js:24032–24042

(target, key, descriptor)

    _resetCounter++;
}
function memoize(target, key, descriptor) {
    // We bind to "null" to prevent people from inadvertently pulling values from "this",
    // rather than passing them in as input values which can be memoized.
    var fn = memoizeFunction(descriptor.value && descriptor.value.bind(null));
    return {
        configurable: true,
        get: function() {
            return fn;
        }
    };
}
function memoizeFunction(cb, maxCacheSize, ignoreNullOrUndefinedResult) {
    if (maxCacheSize === void 0) maxCacheSize = 100;
    if (ignoreNullOrUndefinedResult === void 0) ignoreNullOrUndefinedResult = false;