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plain.js
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plain.js
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"use strict";
var callable = require("es5-ext/object/valid-callable")
, forEach = require("es5-ext/object/for-each")
, extensions = require("./lib/registered-extensions")
, configure = require("./lib/configure-map")
, resolveLength = require("./lib/resolve-length");
module.exports = function self(fn/*, options */) {
var options, length, conf;
callable(fn);
options = Object(arguments[1]);
if (options.async && options.promise) {
throw new Error("Options 'async' and 'promise' cannot be used together");
}
// Do not memoize already memoized function
if (hasOwnProperty.call(fn, "__memoized__") && !options.force) return fn;
// Resolve length;
length = resolveLength(options.length, fn.length, options.async && extensions.async);
// Configure cache map
conf = configure(fn, length, options);
// Bind eventual extensions
forEach(extensions, function (extFn, name) {
if (options[name]) extFn(options[name], conf, options);
});
if (self.__profiler__) self.__profiler__(conf);
conf.updateEnv();
return conf.memoized;
};