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 | | 'use strict'; |  | var $ = require('../internals/export'); |  | var isIntegralNumber = require('../internals/is-integral-number'); |  |   |  | var abs = Math.abs; |  |   |  | // `Number.isSafeInteger` method |  | // https://tc39.es/ecma262/#sec-number.issafeinteger |  | $({ target: 'Number', stat: true }, { |  |   isSafeInteger: function isSafeInteger(number) { |  |     return isIntegralNumber(number) && abs(number) <= 0x1FFFFFFFFFFFFF; |  |   } |  | }); | 
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