I want to update json file using next.js but i don't know how.
I tried FS but it returns errors such as "Fs as no function writeFile" i also tried other packages and none of them worked for me
Related
I'm trying to require some JSON files in my React app (based on CRA 3.01 with Typescript).
The normal const obj = require('./path/file.json') would work if my files had a .json extension - however, these files have .md for 'metadata' and a couple other extensions, and the standard require isn't working. The files are from a tool, so changing to .json isn't a practical option.
Doing some research, it seems the approach is to use the webpack json-loader module (the webpack json-loader docs says that working with different file extensions is the main reason for using the module). I found an example and am using this:
const context = require.context(
"json-loader!./metadata",
true,
/^\.\/.*\.md$/
);
const metadata = context("./foo.md");
I've got a minimum reproduction here (see App.tsx):
https://github.com/ericsolberg/testjson
It seems that this is correctly using the json-loader, and finding the file correctly. However, I'm getting a syntax error:
Error: Module build failed (from ./node_modules/json-loader/index.js):
SyntaxError: Unexpected token m in JSON at position 0
at JSON.parse (<anonymous>)
at Object.module.exports (/Users/***/projects/jsontest/node_modules/json-loader/index.js:4:49)
I did some research on this error, and believe the problem is that the file is being parsed twice - first by the loader configured by CreateCreactApp's default webpack config, then by the specified JSON loader.
I don't want to eject my CRA app to modify the webpack config, and would like to avoid a re-wire hack (and whatever other issues that introduces) ... does anyone know of a way to load JSON files in a CRA app, if these files don't have a JSON extension?
Here's the solution that ended up working for me.
I could eject my project, of course, and customize the webpack config to load JSON files with other extensions. It may be possible to make a rewire hack work as well.
But I realized that when I require a file that is not one of the extensions recognized by CRA's config, it instead copies that file into the build, and require('file.ext') returns the URL of the file. So I'm using axios to load the file. This means a trip to the server for something that could be done statically, but for where I'm taking this project that is actually OK (eventually it will load metadata from a server anyway).
I write a function to read data from excel file, then generate whole datas to JSON. When i test running as application, it works well. But when i call that function into Servlet class and using browser to run it, the file not found exception come. I put the excel file to root folder of my project and URI is the same. Is there any one have ever had same issue with me? and know how to fix it? Thank.
i am building an extension to parse json using vs code extension.
so my need is ,it should be able able to load .json file from a particular folder and iterate through content of the file.
Then it should allow user to select few keys from it make a new json file out of this and save it in any folder.
But i am not able to find any way to read and write files in "vs code extension".Could someone please help me.
If you want to read the current edit state of a file you can use the following API workspace function:
vscode.workspace.openTextDocument(uri).then((document) => {
let text = document.getText();
});
This will show you the current state of the file including unpersisted changes. document is of type TextDocument and has isDirty set to true if it has pending changes.
Since the extension runs in nodejs, you should be able to use any nodejs module built-in or installed by npm in the usual way.
For your purpose you will be OK with the built-in fs module: https://nodejs.org/dist/latest-v6.x/docs/api/fs.html
In your extension you will need to import the required module, so your code file should contain this:
let fs = require("fs");
and then use the methods in the usual way, eg. fs.fileReadSync( filename, encoding ) ...
Please not that there is one exception. If you install a nodejs module containing compiled, binary code, it will not run in the extension and instead you will see an error message saying something like %1 is not a valid Win32 application. Pure javascript modules are OK, though.
VSCode extensions are running in node.js. Therefore you can use any available node.js package/module within your extension. For instance, check out this question for reading JSON.
For JSON, you just need to require or import the JSON file, such as:
const jsonObject = require('./myJSONfile.json');
// do something
For JSON with comments, you can use node-jsonc-parser.
After the manipulation, you could use the fs module of nodej.js to write to the disk.
I've a JSON file which I want to load in a Typescript class. Normally a syntax for that is
let json = require('file.json');
// Use of json file in TS class
This works perfectly fine under normal circumstances. But when I try to compile entire code with webpack, code doesn't work. I see the output code is replaced with following
var json = __webpack_require__(2);
This doesn't make much sense. Can somebody tell me what's going on under the hood and how to fix this issue?
You need to configure WebPack to load JSON files.
https://github.com/webpack/json-loader
i want to read read the Wordpress Export XML with nodejs to JSON.
After i am done with the manipulation of the data i want to import it to Wordpress. So i need to convert json to XML.
I tried different npm script, but nothing working out of the box.
I have read the documentation on Wordpress that is is using
This format, which is called and WordPress eXtended RSS or WXR file
So how can i solve this problem?
Exampel of what i tried before.
var oldprice = req.files['oldprice'].buffer.toString();
var json = xml2json.toJson(oldprice);
console.log(json);
Got it to work with this lib. Dont know way it wouldn't work with the other...
https://github.com/Leonidas-from-XIV/node-xml2js