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