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rOACCT/node_modules/core-js/internals/symbol-define-to-primitive.js
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symbol-define-to-primitive.js
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			var call = require('../internals/function-call');
			var getBuiltIn = require('../internals/get-built-in');
			var wellKnownSymbol = require('../internals/well-known-symbol');
			var defineBuiltIn = require('../internals/define-built-in');

			module.exports = function () {
			var Symbol = getBuiltIn('Symbol');
			var SymbolPrototype = Symbol && Symbol.prototype;
			var valueOf = SymbolPrototype && SymbolPrototype.valueOf;
			var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');

			if (SymbolPrototype && !SymbolPrototype[TO_PRIMITIVE]) {
			// `Symbol.prototype[@@toPrimitive]` method
			// https://tc39.es/ecma262/#sec-symbol.prototype-@@toprimitive
			// eslint-disable-next-line no-unused-vars -- required for .length
			defineBuiltIn(SymbolPrototype, TO_PRIMITIVE, function (hint) {
			return call(valueOf, this);
			}, { arity: 1 });
			}
			};