如何在sveltekit中使用yahoo-finance npm模块？

Question

我真的很难弄清楚如何在sveltekit中使用yahoo-finance。根据文档，import foo from "foo"不允许使用svelte语法-它迫使你使用svelte

这通常不是什么大问题，但由于某些原因，当我尝试导入yahoo-finance时，我得到了以下错误：

util.inherits is not a function
TypeError: util.inherits is not a function
    at node_modules/tough-cookie/lib/memstore.js (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:25313:10)
    at __require2 (http://localhost:3000/node_modules/.vite/chunk-ELXAK55F.js?v=dabb93e8:14:44)
    at node_modules/tough-cookie/lib/cookie.js (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:25442:29)
    at __require2 (http://localhost:3000/node_modules/.vite/chunk-ELXAK55F.js?v=dabb93e8:14:44)
    at http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:60244:9
    at module2.exports (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:15833:9)
    at node_modules/request-promise/lib/rp.js (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:60241:17)
    at __require2 (http://localhost:3000/node_modules/.vite/chunk-ELXAK55F.js?v=dabb93e8:14:44)
    at node_modules/yahoo-finance/lib/utils.js (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:61649:19)
    at __require2 (http://localhost:3000/node_modules/.vite/chunk-ELXAK55F.js?v=dabb93e8:14:44)
    at node_modules/yahoo-finance/lib/historical.js (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:61822:18)
    at __require2 (http://localhost:3000/node_modules/.vite/chunk-ELXAK55F.js?v=dabb93e8:14:44)
    at node_modules/yahoo-finance/lib/index.js (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:62433:27)
    at __require2 (http://localhost:3000/node_modules/.vite/chunk-ELXAK55F.js?v=dabb93e8:14:44)
    at node_modules/yahoo-finance/index.js (http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:62442:34)
    at __require2 (http://localhost:3000/node_modules/.vite/chunk-ELXAK55F.js?v=dabb93e8:14:44)
    at http://localhost:3000/node_modules/.vite/yahoo-finance.js?v=dabb93e8:62447:29

此错误不会在运行时出现-它会在浏览器中加载页面时出现。

这是我的完整代码。

<script>
    // var YahooFinance = require("yahoo-finance");    This doesn't work because require doesn't exist
    // import * as YahooFinance from "yahoo-finance"; This throws the same error as the next line
    import YahooFinance from "yahoo-finance";

    let text = "";
    const testQuote = async () => {
        const result = await YahooFinance.quote({
        symbol: 'AAPL',
        modules: [ 'price', 'summaryDetail' ] // see the docs for the full list
        });
        text = JSON.stringify(result, null, 2);
    }
</script>
<button on:click={testQuote}>Start Request</button>
<p>{text}</p>

Answer 1

util.inherits()是一个Node.js应用编程接口，所以如果您在浏览器中看到它，这意味着某个地方缺少util的polyfill。方式/原因将取决于很多细节，例如您使用的是webpack还是browserify等。

Answer 2

当前维护的an up-to-date, v2 version of this package支持ES模块语法。

然而，作者also adds a caveat about using this module on the front-end。您可能会面临CORS问题，试图直接从浏览器客户端查询Yahoo服务(这不是软件包的问题，而是Yahoo为限制“非官方”访问而施加的限制)。唯一的解决办法是从服务器分派这些调用，这意味着构建您自己的代理API。