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kandi X-RAY | typescript Summary
kandi X-RAY | typescript Summary
These guidelines are adapted from the TypeScript core's contributor coding guidelines.
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QUESTION
I upgraded to React 18 and things compiled fine. Today it seems every single component that uses children is throwing an error. Property 'children' does not exist on type 'IPageProps'.
Before children props were automatically included in the FC
interface. Now it seems I have to manually add children: ReactNode
. What is the correct typescript type for react children?
Is this part of the React 18 update, or is something screwed up in my env?
package.json
...ANSWER
Answered 2022-Apr-07 at 20:34It looks like the children
attribute on the typescript typings were removed.
I had to manually add children to my props; There is probably a better solution to fix this, but in the interim, this works.
QUESTION
I am trying to implement Firebase Realtime Database into a angular project and Im getting stuck at one of the very first steps. Importing AngularFireModule and AngularFireDatabaseModule. It gives me the following error:
...ANSWER
Answered 2021-Aug-26 at 13:20AngularFire 7.0.0 was launched yesterday with a new API that has a lot of bundle size reduction benefits.
Instead of top level classes like AngularFireDatabase
, you can now import smaller independent functions.
QUESTION
Could you help me, I've got this error when I try building a project?
Oops! Something went wrong! :(
ESLint: 8.0.0
TypeError: Failed to load plugin '@typescript-eslint' declared in 'src.eslintrc': Class extends value undefined is not a constructor or null Referenced from: src.eslintrc
package.json
...ANSWER
Answered 2021-Oct-10 at 10:33https://github.com/typescript-eslint/typescript-eslint/issues/3982
It seems to be a compatibility problem
QUESTION
You can see my sample project here: https://github.com/DanKaplanSES/typescript-stub-examples/tree/JavaScript-import-invalid
I have created this file called main.ts:
...ANSWER
Answered 2021-Sep-26 at 13:34Your issue is related to interoperability between TypeScript/ECMAScript modules and CommonJS.
When it comes to the differences between ECMAScript modules and CommonJS modules:
- CommonJS modules are meant to be imported like
const library = require('library')
which allows to retrieve the fullexports
object of that library. There is no notion of default import in CommonJS - ECMAScript modules have explicit
export
clauses for every exported item. They also feature a default import syntax which allows to retrieve thedefault
export in a local variable.
In order to implement interoperability between CommonJS modules and TypeScript's default import syntax, CommonJS modules can have a default
property.
That default
property can even be added automatically by TypeScript when esModuleInterop
is enabled (which also enables allowSyntheticDefaultImports
). This option adds this helper function at transpilation time:
QUESTION
I have been using github actions for quite sometime but today my deployments started failing. Below is the error from github action logs
...ANSWER
Answered 2022-Mar-16 at 07:01First, this error message is indeed expected on Jan. 11th, 2022.
See "Improving Git protocol security on GitHub".
January 11, 2022 Final brownout.
This is the full brownout period where we’ll temporarily stop accepting the deprecated key and signature types, ciphers, and MACs, and the unencrypted Git protocol.
This will help clients discover any lingering use of older keys or old URLs.
Second, check your package.json
dependencies for any git://
URL, as in this example, fixed in this PR.
As noted by Jörg W Mittag:
For GitHub Actions:There was a 4-month warning.
The entire Internet has been moving away from unauthenticated, unencrypted protocols for a decade, it's not like this is a huge surprise.Personally, I consider it less an "issue" and more "detecting unmaintained dependencies".
Plus, this is still only the brownout period, so the protocol will only be disabled for a short period of time, allowing developers to discover the problem.
The permanent shutdown is not until March 15th.
As in actions/checkout issue 14, you can add as a first step:
QUESTION
router.get('/cells', async (req, res) => {
try {
const result = await fs.readFile(fullPath, { encoding: 'utf-8' });
res.send(JSON.parse(result));
} catch (err) {
if (err.code === 'ENOENT') { // Object is of type 'unknown'.ts(2571) (local var) err: unknown
await fs.writeFile(fullPath, '[]', 'utf-8');
res.send([]);
} else {
throw err;
}
}
...ANSWER
Answered 2021-Oct-03 at 06:44In JavaScript/TypeScript you can throw anything, not only errors. In theory it could be anything in the catch block. If you want to prevent the type error it could make sense to check if the unknown
value is a system error before checking the code.
QUESTION
Our application kept showing the error in the title. The problem is very likely related to Webpack 5 polyfill and after going through a couple of solutions:
- Setting fallback + install with npm
ANSWER
Answered 2021-Aug-10 at 08:15Answering my own question. Two things helped to resolve the issue:
- Adding plugins section with ProviderPlugin into webpack.config.js
QUESTION
I am currently setting up a boilerplate with React, Typescript, styled components, webpack etc. and I am getting an error when trying to run eslint:
Error: Must use import to load ES Module
Here is a more verbose version of the error:
...ANSWER
Answered 2022-Mar-15 at 16:08I think the problem is that you are trying to use the deprecated babel-eslint parser, last updated a year ago, which looks like it doesn't support ES6 modules. Updating to the latest parser seems to work, at least for simple linting.
So, do this:
- In package.json, update the line
"babel-eslint": "^10.0.2",
to"@babel/eslint-parser": "^7.5.4",
. This works with the code above but it may be better to use the latest version, which at the time of writing is 7.16.3. - Run
npm i
from a terminal/command prompt in the folder - In .eslintrc, update the parser line
"parser": "babel-eslint",
to"parser": "@babel/eslint-parser",
- In .eslintrc, add
"requireConfigFile": false,
to the parserOptions section (underneath"ecmaVersion": 8,
) (I needed this or babel was looking for config files I don't have) - Run the command to lint a file
Then, for me with just your two configuration files, the error goes away and I get appropriate linting errors.
QUESTION
I am having problems with npx create-react-app involving global installs. My confusion arises because as far as I'm aware the create-react-app package is not installed on my machine.
Some Details:
I start a react project (with typescript template) as I have previously and recently done on this same machine a number of times:
npx create-react-app --template typescript .
I get this prompt from the terminal
Need to install the following packages: create-react-app Ok to proceed? (y)
I press y to confirm it's okay to proceed. (If I press n, the process terminates with the following error: npm ERR! canceled
.) The terminal then displays the following message
ANSWER
Answered 2021-Dec-21 at 14:45You can try to locate the installed version by running:
QUESTION
[I keep getting the error that says 'string' is not assignable to parameter of type 'never' in react native typescript and I don't know why. Can someone help me fix this bug.
Thank you in advance.]1
code snippet :
...ANSWER
Answered 2021-Oct-11 at 12:01The only solution I found is to apply the type never on the string name.
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