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37 lines
1.0 KiB
37 lines
1.0 KiB
"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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