英文:
How does nodejs interpret key value pairs when no semi color exists and the key itself is a string called with a function?
问题
以下是翻译好的部分：
我只是在浏览hexo-cli中的一些测试代码，发现了下面的代码行（完整的代码和存储库可以在[这里][1]找到）：
const hexo = proxyquire('../../dist/hexo', {
'./console'(ctx) {
ctx.extend.console.register('help', spy);
}
});
我已经阅读了在线文章，该模块可以使用`proxyquire`进行代理（[proxyquery][2]），然后可以传递键值以模仿这些模块中的方法，例如以下示例：
var calculateDiscounts = proxyquire(‘./somemodule’, {
‘*/cartridge/scripts/hooks/cart/calculateHelpers’: {
removeAllPriceAdjustments: removeAllPriceAdjustmentsStub
},
‘dw/campaign/PromotionMgr’: {
getPromotion: getPromotionStub,
getDiscounts: getDiscountsStub,
applyDiscounts: applyDiscountsStub
}
});
（[带有上述代码片段的原始文章][3]）
那么下面的代码行是如何执行的呢？为什么没有抛出错误，因为它看起来根本不像一个有效的对象？
'./console'(ctx) {
ctx.extend.console.register('help', spy);
}
[1]: https://dn.myshopmatic.com/images/7ZEO4V/Rn2JYwED4q.jpg
[2]: https://www.npmjs.com/package/proxyquire
[3]: https://medium.com/ordergroove-engineering/unit-testing-with-chai-proxyquire-and-sinon-df0ecba75245
希望这个翻译对你有所帮助。
英文:
I was just going throw some of the test code in hexo-cli and came across the below lines of code ( full code and repo can be found here ):
const hexo = proxyquire('../../dist/hexo', {
'./console'(ctx) {
ctx.extend.console.register('help', spy);
}
});
I have read articles online stating that the module can be proxied using proxyquiry ( proxyquery ) and then key-values can be passed to imitate the methods in these modules like below for example:
var calculateDiscounts = proxyquire(‘./somemodule’, {
‘*/cartridge/scripts/hooks/cart/calculateHelpers’: {
removeAllPriceAdjustments: removeAllPriceAdjustmentsStub
},
‘dw/campaign/PromotionMgr’: {
getPromotion: getPromotionStub,
getDiscounts: getDiscountsStub,
applyDiscounts: applyDiscountsStub
}
});
( original article with above snippet )
So how does the below line of code execute? Why no errors are thrown, since it doesn't seem like a valid object at all?
'./console'(ctx) {
ctx.extend.console.register('help', spy);
}
答案1
得分: 1
这与
```javascript
'./console': function(ctx) {
ctx.extend.console.register('help', spy);
}
更多信息请参见https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer?retiredLocale=pl#method_definitions 或 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Method_definitions
在浏览器中正常工作：
<!-- begin snippet: js hide: false console: true babel: false -->
<!-- language: lang-js -->
const a = {
'./console'(num) {
return num * 5
}
}
console.log(a['./console'](2))
<!-- end snippet -->
英文:
This is the same as
'./console': function(ctx) {
ctx.extend.console.register('help', spy);
}
See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer?retiredLocale=pl#method_definitions or https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Method_definitions
Works fine in the broswer:
<!-- begin snippet: js hide: false console: true babel: false -->
<!-- language: lang-js -->
const a = {
'./console'(num) {
return num * 5
}
}
console.log(a['./console'](2))
<!-- end snippet -->
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