具有未知键的Joi验证对象

const schema = Joi.object().keys({
  name: Joi.string().required(),
}).unknown(true);

const data = {
  name: 'John Doe',
  age: 30,
};

const result = schema.validate(data);
console.log(result); // { value: { name: 'John Doe' }, error: null }

const schema = Joi.object().keys({
  name: Joi.string().required(),
}).unknown(false);

const data = {
  name: 'John Doe',
  age: 30,
};

const result = schema.validate(data);
console.log(result); // { value: { name: 'John Doe', age: 30 }, error: [ValidationError: "age" is not allowed] }

const Joi = require('joi');

// 自定义扩展
const unknownKeysExtension = (joi) => ({
  base: joi.object(),
  name: 'object',
  language: {
    unknownKeys: 'contains unknown keys: {{keys}}',
  },
  rules: [
    {
      name: 'unknownKeys',
      params: {
        keys: joi.array().items(joi.string()),
      },
      validate(params, value, state, options) {
        const keys = Object.keys(value).filter((k) => !this._inner.keys.some((key) => key.key === k));
        if (keys.length > 0) {
          return this.createError('object.unknownKeys', { keys }, state, options);
        }
        return value;
      },
    },
  ],
});

const schema = Joi.extend(unknownKeysExtension).object().keys({
  name: Joi.string().required(),
}).unknownKeys();

const data = {
  name: 'John Doe',
  age: 30,
};

const result = schema.validate(data);
console.log(result); // { value: { name: 'John Doe', age: 30 }, error: [ValidationError: contains unknown keys: age] }