[Node.js] Introduction to apiCheck.js-优快云博客

本文介绍了一个使用Node.js实现的带参数的定时器函数timeoutLog，该函数通过外部传入的时间、对象及回调函数，在指定时间后输出日志并调用回调。此外，还展示了如何利用api-check模块来验证函数参数的有效性。

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timeoutLog.js:

var apiCheckFactory = require('api-check');

var myCheck = apiCheckFactory();

module.exports = timeoutLog;

var api = [
  myCheck.number,
  myCheck.shape({
    name: myCheck.string
  }),
  myCheck.func.optional
];

function timeoutLog(time, person, callback) {
  myCheck.throw(api, arguments);

  setTimeout(function() {
    console.log('Time is up for ' + person.name + '!');
    callback && callback(person);
  }, time);
}

index.js:

// just giving me some space...
console.log('\n------\n');


var timeoutLog = require('./timeoutLog');

var person = {
  name: 'Jane'
};

timeoutLog(300, {name: 'Joe'}, function(thePerson) {
  console.log(
    'Person is the same? ' + (person === thePerson)
  );
});

Error message something like:

Error: apiCheck failed! `Argument 1` passed, `value` at `Argument 2` must be `String`

You passed:
[
  "wHY+jgNSE0HaoLsMgqkF4uGBX33bf6orJcLVGD0MdFx+tPoPnoJ9EreqOxuUixXoEOI2nGwJb8sXFAyrnXSjMpD98OVj0wg2menNJ65LzEtw3YYBsBZ4yzRtI6PD13zUy+R3S7WIhcWI30V+jZShvP5J2rm4=",
  true
]

With the types:
[
  "string",
  "boolean"
]

The API calls for:
[
  "String",
  "String"
]