Clone, npm install, npm run build
For memoizee it seems some of the code gets lost.
The output (also available in dist/bundle.js) has the following output, right at the end of the generated file -
var memoizee = function (fn/*, options*/) {
var options = normalizeOptions(arguments[1]), length;
if (!options.normalizer) {
length = options.length = resolveLength(options.length, fn.length, options.async);
if (length !== 0) {
if (options.primitive) {
if (length === false) {
options.normalizer = primitive;
} else if (length > 1) {
options.normalizer = getPrimitiveFixed(length);
}
} else if (length === false) options.normalizer = get();
else if (length === 1) options.normalizer = get1();
else options.normalizer = getFixed(length);
}
}
// Assure extensions
if (options.async)
if (options.promise)
if (options.dispose)
if (options.maxAge)
if (options.max)
if (options.refCounter)
return plain(fn, options);
};The "Assure extensions" is problematic, it is generated from this code in memoizee -
// Assure extensions
if (options.async) require("./ext/async");
if (options.promise) require("./ext/promise");
if (options.dispose) require("./ext/dispose");
if (options.maxAge) require("./ext/max-age");
if (options.max) require("./ext/max");
if (options.refCounter) require("./ext/ref-counter");
return plain(fn, options);So effectively what happens above is that instead of using the requires, the actual return only happens when all the options are set.