Configring node js.
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12
node_modules/core-js/modules/_to-primitive.js
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12
node_modules/core-js/modules/_to-primitive.js
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// 7.1.1 ToPrimitive(input [, PreferredType])
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var isObject = require('./_is-object');
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// instead of the ES6 spec version, we didn't implement @@toPrimitive case
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// and the second argument - flag - preferred type is a string
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module.exports = function(it, S){
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if(!isObject(it))return it;
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var fn, val;
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if(S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
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if(typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it)))return val;
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if(!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it)))return val;
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throw TypeError("Can't convert object to primitive value");
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};
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