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authentication/src/utils/pointless.js

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export const pointless = (authtext) => {
// 定义一个包含所有非法值的数组
var invalidValues = ["", null, "null", "Null", NaN, "NaN", "nan", undefined, "undefined", " ", '\s'];
// 检查NaN,因为NaN不等于自身,需要特殊处理
if (isNaN(authtext)) {
return false;
}
// 检查authtext是否在invalidValues数组中
return !invalidValues.includes(authtext);
}