箭头功能“期望的表达"是指箭头功能.语法错误 [英] Arrow function "expression expected" syntax error

问题描述

我要转换此代码:

var formatQuoteAmount = function (tx) {
    return Currency.toSmallestSubunit(tx.usd, 'USD');
};
var quoteAmounts = res.transactions.map(formatQuoteAmount);

进入匿名箭头功能.我写了这个:

into an anonymous arrow function. I've written this:

var quoteAmounts = res.transactions.map(tx => Currency.toSmallestSubunit(tx.usd, 'USD'));

我在箭头处收到expression expected语法错误.我在此处的默认语法中进行了查找，似乎像我的代码的语法是正确的.任何想法可能是什么问题吗?

I get expression expected syntax error at the arrow. I looked up the default syntax here and seems like the syntax of my code is correct. Any ideas what the problem might be?

我使用以下语法:

    var quoteAmounts = res.transactions.map(function (tx) {
        return Currency.toSmallestSubunit(tx.usd, 'USD')
    });

但是我想使其具有箭头功能的单线.

but I want to make it a one-liner, with an arrow-function.

在node v5.3.0

推荐答案

在编辑Node.js程序时，我遇到了 Webstorm 报告的错误expression expected.在这种情况下，解决方案是将语言版本设置为支持此功能的版本.

I had the error expression expected reported by Webstorm when editing a Node.js program. In this case the solution is to set the language version to a version that supports this feature.

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