node.js - Node js mosca 代理错误 : Expected `schema` to be an object or boolean

Question

我创建了一个简单的经纪人:

var mosca = require("mosca");
var settings = {
  port: 1883,
};

var server = new mosca.Server(settings);

server.on("ready", function () {
  console.log("ready");
});

当我运行我运行文件时出现此错误:

/home//Documents/mqtt/node_modules/jsonschema/lib/validator.js:107
    throw new SchemaError('Expected `schema` to be an object or boolean');
    ^
SchemaError: Expected `schema` to be an object or boolean
    at Validator.validate (/home//Documents/mqtt/node_modules/jsonschema/lib/validator.js:107:11)
    at Object.validate (/home//Documents/mqtt/node_modules/mosca/lib/options.js:264:26)
    at new Server (/home//Documents/mqtt/node_modules/mosca/lib/server.js:104:34)
    at Object.<anonymous> (/home//Documents/mqtt/broker.js:16:14)
    at Module._compile (internal/modules/cjs/loader.js:1137:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)
    at Module.load (internal/modules/cjs/loader.js:985:32)
    at Function.Module._load (internal/modules/cjs/loader.js:878:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
    at internal/main/run_main_module.js:17:47 {
  schema: undefined
}

我在运行:
Node :v12.18.4
npm:6.14.6

Answer 1

就像 JD Allen 说的，运行 aedes 比 mosca 更好，它的依赖关系 jsonschema 更新到 1.2.8 版本后坏了，您可以手动安装 jsonschema 1.2.6 运行它，不会出错。在更新到 1.2.8 之前还没有坏掉