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当给值赋值 undefined 时,required: false 校验失败 #95

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@clChenLiang

Description

传参 { a: undefined }
在校验 { a: { type: 'string', required: false } } 时,
会失败。

it.only('test paramsValidates', async () => {
 const res = ctx.paramsValidate({
 a: 'string',
 b: { type: 'string', required: false },
 }, {
 a: 'ab',
 b: undefined,
 });
});

在 parameter 中,是用的 hasOwnProperty 判断是否有值:
image
这里会让
b = undefined
逃逸掉。不知道是不是什么考虑设计的

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