I'm attempting to use the fetch function in react-native to grab a piece of data from the web. from what I understand reading the docs, the fetch function is built in to react-native.
when doing so, I get the module resolution error in the attached screenshot, where for whatever reason the react-native bundler is attempting to use the fetch provided by typescript from my ~/.cache directory.
I've previously had typescript 2.6 installed globally via npm, I uninstalled it to see if that might fix things, but the error persists.
I should note that the only things I've done for this project are to create it with create-react-native-app, add a little snippet to the App.js component stolen from the react docs to fetch some JSON, and yarn run eject the project (this error persisted before and after the ejection)
well in my turkey-induced frenzy, it appears I hadn't properly uninstalled the global typescript install on my computer.
having done so properly, the issue is resolved;
however the issue of react-native's module resolution strategy being incompatible with a global typescript installation persists.
Related
I have a slight problem with a basic Node.JS method. When I'm trying to use "require()' method to import any downloaded (with 'npm install ..) module/library, I get a Visual Studio Code message that asks 'to convert 'require'(which is a Common JS module) into ES. If I do it, it transforms 'require()' into 'import..' though I want keep using 'require()'. Why is it so ? I read somewhere that Common JS is already included in the Node.JS environment though.
Then, when trying to compile my index.js file (with 'node index.js'), I obviously get an error about 'require' not recognized method.
Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users...index.js from C:\Users...index.js not supported.
I tried then to install Webpack to fix this issue, but nothing change. I also kind of installed CommonJS (npm i common-js)..
Another common answer was to remove 'type':'module' from package.json file which normally should allow to use 'require', but I don't even have such a line in the file.
On top of that I've recently read that 'require' is not compatible with browser development tools (it's ok). But I'm trying to import a downloaded module/npm package in VSC terminal, not even in a browser.
As you understand I'm new to Node.JS, but I don't really get what's going on in this case...
I have a simple setup with Strapi as a backend and React as a frontend. My goal is to get the result from the api I have in my backend using any tool out there. I first tried with Axios but seems to have an issue doing GET call because the 'Content-Lenght' wasn't generated automatically and I couldn't set it manually somehow.
I decided to use something else and one that I found that seems popular is node-fetch.
However, I can't even begin to use it. I install it locally to my project using:
npm i node-fetch --save
Then in my .js file:
import fetch from 'node-fetch';
const App = () => {
const result = fetch('https://api.github.com/');
}
export default App;
Then I try compiling or running the project and I get the following error message:
.\node_modules\node-fetch\src\index.js
Cannot find module: 'node:http'. Make sure this package is installed.
If I check the actual file in the node-fetch module. It is easy to see that the said module is imported there. However, I am unsure what this format for importing is even about with the 'node:xxxx'. I supose this is some kind of way to import basic node module but then, why would they be missing from my installation.
I tried it on me personal dev PC first and it failed. I then went ahead and troubleshooted for hours as to what it could be. I ended cleaning my entire project node_modules, rebuilding, uninstalling node.js and everything module installed globally. Reinstalling through nvm instead. Still didn't work.
I also tried installing "npm i http --save", which did nothing.
and today, I just tried this on a fresh project on my work computer and I have the exact same thing.
what could it be? Is this just a node-fetch issue in general?
("node-fetch": "^3.2.3")
The package node-fetch is a fetch implementation for Node.js not for the browser. In React you should be able to use fetch without installing and importing any package because fetch is part of the browser API and is present on the window object (window.fetch).
For browsers that don't support fetch you need a polyfill, check Can I Use for browser support and use whatwg-fetch as a polyfill.
See this for a polyfill solution for CRA:
https://github.com/facebook/create-react-app/blob/main/packages/react-app-polyfill/README.md
See this for examples on how to use fetch in React:
https://reactjs.org/docs/faq-ajax.html
I am working on an application via the toolchain tool on IBM Cloud and editing the code via the Eclipse Orion IDE. As I am not accessing this through my local cli, my understanding is that in order to so call npm install {package}, I would just need to include the package in the package.json file under dependencies and require it in my app. However, when I load the application, I get the require is not defined indicating that the package has not been installed. Moreover, the require() is being used in the app.js file with the application being launched but not from files in my public directory.
After playing around further, it seems it might have to do with the way the directory tree is being traced as the error is only thrown in subdirectories. For example, require('express') works in app.js which is in the main directory ./ but fails when it is called in test.js in ./subdirectory/test.js. I feel like I'm missing something painfully simple like configuration of endpoint or something.
I've been searching around but I can't seem to find how to get the packages loaded, preferably without using the cli. Appreciate any pointers. Thanks!
Update: After playing around further, I am also getting module is not defined error when trying to require from another file in the same directory. For example module.exports = 'str' returns this error. While trying to require('./file') returns the require is not defined. It might have to do with how node is wrapping the functions?
Update 2: Tried "start": "npm install && node app.js" in package.json but no luck. Adding a build stage which calls npm install before deployment also does not work
Update 3: After adding npm install build stage, I am able to see that the dependencies have been successfully built via the logs. However, the require is not defined error still persists.
Update 4: Trying npm install from my CLI doesn't work as well even though all packages and dependencies are present
Update 5: Running cf restage or configuring cache via cacheDirectories does not work as well
Opened a related question regarding deployment here
Found out my confusion was caused due to me not realizing that require() cannot be used on the client side unless via tools such as Browserify.
I have the following based on instructions from here:
const Pubgapi = require('pubg-api');
const apiInstance = new Pubgapi('api-key');
For some reason when I run it, the console says unable to resolve path but it's looking for a node-modules which I don't have. This is an API wrapper that I am trying to use by the way. What could cause it to give me this error?
I did an npm install as the instructions said and nothing else before the statements above.
Error message:
Unable to resolve ../node-modules/pubg-api" from ".//components/Main.js`: The module `../node-modules/pubg-api` could not be found"
I have checked the node_modules folder. It is indeed pubg-api, not pubg_api. Requiring pubg_api gives me this error.
This error is probably related to the HTTPS library that the library you are trying to install depends on. Node.js libraries are not compatible with react-native since it is not working on a Node.js platform.
To overcome this issue you can try to use react-native-http library, but I did not try to use it before, so I'm not sure if it's going to work or not.
I'm trying to make use of the axios library to call some API endpoints.
My project setup is a Phoenix app (with brunch for asset management) and a React app (all in the web/static/js directory)
Most npm modules are ok, I do:
npm install --save _module-name_
Then I add the module to the brunch-config.js into the npm whitelist array.
Which I've done with axios, so it doesn't complain that it cannot find the library.
However, when I try and use axios e.g axios.post
I get the following error in the JS Console:
Cannot find module "axios/lib/adapters/xhr"
It's like brunch isn't loading in the axios dependencies (even though I can see that file if i navigate to node_modules/axios/lib/adapters
Has anyone had this issue (with any npm module and brunch/phoenix) and if so how do you go about fixing it?
Update
It seems to be a wider spread problem with brunch.
I also cannot use "React-Bootstrap" I get a similar error where it cannot find the sub-dependencies....
I had the same issue and updated brunch to the latest (2.7.5 at the time), which resolved my issue.
See https://github.com/brunch/brunch/issues/1136