"use strict";
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var value = require("./valid-value")
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, mixin = require("./mixin");
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var getPrototypeOf = Object.getPrototypeOf;
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module.exports = function (target, source) {
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target = Object(value(target));
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source = Object(value(source));
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if (target === source) return target;
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var sources = [];
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while (source && !isPrototypeOf.call(source, target)) {
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sources.unshift(source);
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source = getPrototypeOf(source);
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}
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var error;
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sources.forEach(function (sourceProto) {
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try { mixin(target, sourceProto); } catch (mixinError) { error = mixinError; }
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});
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if (error) throw error;
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return target;
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};
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