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TypeScript | TypeScript is a superset of JavaScript | Runtime Evironment library

 by   microsoft TypeScript Version: v4.7-beta License: Apache-2.0

 by   microsoft TypeScript Version: v4.7-beta License: Apache-2.0

Download this library from

kandi X-RAY | TypeScript Summary

TypeScript is a TypeScript library typically used in Server, Runtime Evironment, Angular, Nodejs, Docker applications. TypeScript has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.
TypeScript is a language for application-scale JavaScript. TypeScript adds optional types to JavaScript that support tools for large-scale JavaScript applications for any browser, for any host, on any OS. TypeScript compiles to readable, standards-based JavaScript. Try it out at the playground, and stay up to date via our blog and Twitter account. Find others who are using TypeScript at our community page.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • TypeScript has a medium active ecosystem.
  • It has 79882 star(s) with 10473 fork(s). There are 2124 watchers for this library.
  • There were 1 major release(s) in the last 6 months.
  • There are 5307 open issues and 28136 have been closed. On average issues are closed in 83 days. There are 256 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of TypeScript is v4.7-beta
TypeScript Support
Best in #Runtime Evironment
Average in #Runtime Evironment
TypeScript Support
Best in #Runtime Evironment
Average in #Runtime Evironment

quality kandi Quality

  • TypeScript has 0 bugs and 0 code smells.
TypeScript Quality
Best in #Runtime Evironment
Average in #Runtime Evironment
TypeScript Quality
Best in #Runtime Evironment
Average in #Runtime Evironment

securitySecurity

  • TypeScript has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • TypeScript code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
TypeScript Security
Best in #Runtime Evironment
Average in #Runtime Evironment
TypeScript Security
Best in #Runtime Evironment
Average in #Runtime Evironment

license License

  • TypeScript is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
TypeScript License
Best in #Runtime Evironment
Average in #Runtime Evironment
TypeScript License
Best in #Runtime Evironment
Average in #Runtime Evironment

buildReuse

  • TypeScript releases are available to install and integrate.
  • Installation instructions are not available. Examples and code snippets are available.
TypeScript Reuse
Best in #Runtime Evironment
Average in #Runtime Evironment
TypeScript Reuse
Best in #Runtime Evironment
Average in #Runtime Evironment
Top functions reviewed by kandi - BETA

Coming Soon for all Libraries!

Currently covering the most popular Java, JavaScript and Python libraries. See a SAMPLE HERE.
kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.

TypeScript Key Features

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

Installing

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npm install -g typescript

Building

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git clone https://github.com/microsoft/TypeScript.git

Usage

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node built/local/tsc.js hello.ts

React 18 TypeScript children FC

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const ComponentWithNoChildren: React.FC = () => <>Hello</>;

...

<ComponentWithNoChildren>
   // passing children is wrong since component does not accept any
   <UnusedChildrenSinceComponentHasNoChildren /> 
</ComponentWithNoChildren>
import React from 'react';

type Props = {};
const Component: React.FC<Props> = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type Props = {};
const Component: React.FC<PropsWithChildren<Props>> = ({children}) => {...}
import React from 'react';

const Component: React.FC = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type PropsWithChildrenOnly = PropsWithChildren<unknown>;
const Component: React.FC<PropsWithChildrenOnly> = ({children}) => {...}
-----------------------
const ComponentWithNoChildren: React.FC = () => <>Hello</>;

...

<ComponentWithNoChildren>
   // passing children is wrong since component does not accept any
   <UnusedChildrenSinceComponentHasNoChildren /> 
</ComponentWithNoChildren>
import React from 'react';

type Props = {};
const Component: React.FC<Props> = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type Props = {};
const Component: React.FC<PropsWithChildren<Props>> = ({children}) => {...}
import React from 'react';

const Component: React.FC = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type PropsWithChildrenOnly = PropsWithChildren<unknown>;
const Component: React.FC<PropsWithChildrenOnly> = ({children}) => {...}
-----------------------
const ComponentWithNoChildren: React.FC = () => <>Hello</>;

...

<ComponentWithNoChildren>
   // passing children is wrong since component does not accept any
   <UnusedChildrenSinceComponentHasNoChildren /> 
</ComponentWithNoChildren>
import React from 'react';

type Props = {};
const Component: React.FC<Props> = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type Props = {};
const Component: React.FC<PropsWithChildren<Props>> = ({children}) => {...}
import React from 'react';

const Component: React.FC = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type PropsWithChildrenOnly = PropsWithChildren<unknown>;
const Component: React.FC<PropsWithChildrenOnly> = ({children}) => {...}
-----------------------
const ComponentWithNoChildren: React.FC = () => <>Hello</>;

...

<ComponentWithNoChildren>
   // passing children is wrong since component does not accept any
   <UnusedChildrenSinceComponentHasNoChildren /> 
</ComponentWithNoChildren>
import React from 'react';

type Props = {};
const Component: React.FC<Props> = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type Props = {};
const Component: React.FC<PropsWithChildren<Props>> = ({children}) => {...}
import React from 'react';

const Component: React.FC = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type PropsWithChildrenOnly = PropsWithChildren<unknown>;
const Component: React.FC<PropsWithChildrenOnly> = ({children}) => {...}
-----------------------
const ComponentWithNoChildren: React.FC = () => <>Hello</>;

...

<ComponentWithNoChildren>
   // passing children is wrong since component does not accept any
   <UnusedChildrenSinceComponentHasNoChildren /> 
</ComponentWithNoChildren>
import React from 'react';

type Props = {};
const Component: React.FC<Props> = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type Props = {};
const Component: React.FC<PropsWithChildren<Props>> = ({children}) => {...}
import React from 'react';

const Component: React.FC = ({children}) => {...}
import React, { PropsWithChildren } from 'react';

type PropsWithChildrenOnly = PropsWithChildren<unknown>;
const Component: React.FC<PropsWithChildrenOnly> = ({children}) => {...}
-----------------------
import * as React from 'react';

type Props = {};
const Component: React.FC<Props> = ({children}) => {...}
import * as React from 'react';

type Props = {
  children?: React.ReactNode
};
const Component: React.FC<Props> = ({children}) => {...}
-----------------------
import * as React from 'react';

type Props = {};
const Component: React.FC<Props> = ({children}) => {...}
import * as React from 'react';

type Props = {
  children?: React.ReactNode
};
const Component: React.FC<Props> = ({children}) => {...}

AngularFireModule and AngularFireDatabaseModule not being found in @angular/fire

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import { list } from '@angular/fire/database';
@NgModule({
    imports: [
        provideFirebaseApp(() => initializeApp(config)),
        provideFirestore(() => {
            const firestore = getFirestore();
            connectEmulator(firestore, 'localhost', 8080);
            enableIndexedDbPersistence(firestore);
            return firestore;
        }),
        provideStorage(() => getStorage()),
    ],
})
import { AngularFireModule} from '@angular/fire/compat'
import { AngularFireDatabaseModule } from '@angular/fire/compat/database';
-----------------------
import { list } from '@angular/fire/database';
@NgModule({
    imports: [
        provideFirebaseApp(() => initializeApp(config)),
        provideFirestore(() => {
            const firestore = getFirestore();
            connectEmulator(firestore, 'localhost', 8080);
            enableIndexedDbPersistence(firestore);
            return firestore;
        }),
        provideStorage(() => getStorage()),
    ],
})
import { AngularFireModule} from '@angular/fire/compat'
import { AngularFireDatabaseModule } from '@angular/fire/compat/database';
-----------------------
import { list } from '@angular/fire/database';
@NgModule({
    imports: [
        provideFirebaseApp(() => initializeApp(config)),
        provideFirestore(() => {
            const firestore = getFirestore();
            connectEmulator(firestore, 'localhost', 8080);
            enableIndexedDbPersistence(firestore);
            return firestore;
        }),
        provideStorage(() => getStorage()),
    ],
})
import { AngularFireModule} from '@angular/fire/compat'
import { AngularFireDatabaseModule } from '@angular/fire/compat/database';
-----------------------
    provideFirebaseApp(() => initializeApp(environment.firebase))
-----------------------
import { AngularFireAuthModule } from "@angular/fire/compat/auth";
import { AngularFireModule } from '@angular/fire/compat';

const firebaseConfig = [
  AngularFireAuthModule,
  AngularFireModule.initializeApp(environment.firebase) // Your config
];
-----------------------
use latest version of node,angular/cli.
Install latest firebase with npm i firebase.
Install @angular/fire with npm i @angular/fire.
import { AngularFireModule } from '@angular/fire/compat';
import { AngularFireDatabaseModule } from '@angular/fire/compat/database';
import { AngularFireAuthModule } from '@angular/fire/compat/auth';
-----------------------
use latest version of node,angular/cli.
Install latest firebase with npm i firebase.
Install @angular/fire with npm i @angular/fire.
import { AngularFireModule } from '@angular/fire/compat';
import { AngularFireDatabaseModule } from '@angular/fire/compat/database';
import { AngularFireAuthModule } from '@angular/fire/compat/auth';

ESLint: 8.0.0 Failed to load plugin '@typescript-eslint'

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"@typescript-eslint/eslint-plugin": "^5.0.0",
"@typescript-eslint/parser": "^5.0.0",
"eslint": "^8.1.0",
npm i
-----------------------
"@typescript-eslint/eslint-plugin": "^5.0.0",
"@typescript-eslint/parser": "^5.0.0",
"eslint": "^8.1.0",
npm i
-----------------------
  "devDependencies": {
    ...
    "@typescript-eslint/eslint-plugin": "^4.29.1",
    "@typescript-eslint/parser": "^4.29.1",
    ...
}
-----------------------
  "devDependencies": {
    ...
    "@typescript-eslint/eslint-plugin": "^5.6.0",
    "@typescript-eslint/parser": "^5.6.0",
    "eslint": "^7.32.0",
    "typescript": "^4.4.3"
  }
npm i --save-dev typescript @typescript-eslint/eslint-plugin@5.6.0 @typescript-eslint/parser@5.6.0 eslint@7.32.0
-----------------------
  "devDependencies": {
    ...
    "@typescript-eslint/eslint-plugin": "^5.6.0",
    "@typescript-eslint/parser": "^5.6.0",
    "eslint": "^7.32.0",
    "typescript": "^4.4.3"
  }
npm i --save-dev typescript @typescript-eslint/eslint-plugin@5.6.0 @typescript-eslint/parser@5.6.0 eslint@7.32.0

Why does typescript allow me to import dependencies it can't use at runtime?

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var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
-----------------------
module.exports = require('./lodash');
...
/*--------------------------------------------------------------------------*/

  // Export lodash.
  var _ = runInContext();

  // Some AMD build optimizers, like r.js, check for condition patterns like:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // Expose Lodash on the global object to prevent errors when Lodash is
    // loaded by a script tag in the presence of an AMD loader.
    // See http://requirejs.org/docs/errors.html#mismatch for more details.
    // Use `_.noConflict` to remove Lodash from the global object.
    root._ = _;

    // Define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module.
    define(function() {
      return _;
    });
  }
  // Check for `exports` after `define` in case a build optimizer adds it.
  else if (freeModule) {
    // Export for Node.js.
    (freeModule.exports = _)._ = _;
    // Export for CommonJS support.
    freeExports._ = _;
  }
  else {
    // Export to the global object.
    root._ = _;
  }

-----------------------
module.exports = require('./lodash');
...
/*--------------------------------------------------------------------------*/

  // Export lodash.
  var _ = runInContext();

  // Some AMD build optimizers, like r.js, check for condition patterns like:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // Expose Lodash on the global object to prevent errors when Lodash is
    // loaded by a script tag in the presence of an AMD loader.
    // See http://requirejs.org/docs/errors.html#mismatch for more details.
    // Use `_.noConflict` to remove Lodash from the global object.
    root._ = _;

    // Define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module.
    define(function() {
      return _;
    });
  }
  // Check for `exports` after `define` in case a build optimizer adds it.
  else if (freeModule) {
    // Export for Node.js.
    (freeModule.exports = _)._ = _;
    // Export for CommonJS support.
    freeExports._ = _;
  }
  else {
    // Export to the global object.
    root._ = _;
  }

The unauthenticated git protocol on port 9418 is no longer supported

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    - name: Fix up git URLs
      run: echo -e '[url "https://github.com/"]\n  insteadOf = "git://github.com/"' >> ~/.gitconfig
git config --global url."https://github.com/".insteadOf git://github.com/
git config --global url."git@github.com:".insteadOf git://github.com/
-----------------------
    - name: Fix up git URLs
      run: echo -e '[url "https://github.com/"]\n  insteadOf = "git://github.com/"' >> ~/.gitconfig
git config --global url."https://github.com/".insteadOf git://github.com/
git config --global url."git@github.com:".insteadOf git://github.com/
-----------------------
    - name: Fix up git URLs
      run: echo -e '[url "https://github.com/"]\n  insteadOf = "git://github.com/"' >> ~/.gitconfig
git config --global url."https://github.com/".insteadOf git://github.com/
git config --global url."git@github.com:".insteadOf git://github.com/
-----------------------
git config --global url."https://".insteadOf git://
-----------------------
[remote "upstream"]
    url = git://github.com/curlconverter/curlconverter.git
    fetch = +refs/heads/*:refs/remotes/upstream/*
[remote "upstream"]
    url = git@github.com:curlconverter/curlconverter.git
    fetch = +refs/heads/*:refs/remotes/upstream/*
-----------------------
[remote "upstream"]
    url = git://github.com/curlconverter/curlconverter.git
    fetch = +refs/heads/*:refs/remotes/upstream/*
[remote "upstream"]
    url = git@github.com:curlconverter/curlconverter.git
    fetch = +refs/heads/*:refs/remotes/upstream/*
-----------------------
git config --global url."https://github".insteadOf git://github
Unhandled rejection Error: Command failed: /usr/bin/git submodule update -q --init --recursive
warning: templates not found /tmp/pacote-git-template-tmp/git-clone-a001527f
fatal: remote error:
  The unauthenticated git protocol on port 9418 is no longer supported.
Please see https://github.blog/2021-09-01-improving-git-protocol-security-github/ for more information.
fatal: clone of 'git://github.com/jquery/sizzle.git' into submodule path '/root/.npm/_cacache/tmp/git-clone-19674e32/src/sizzle' failed
Failed to clone 'src/sizzle'. Retry scheduled
warning: templates not found /tmp/pacote-git-template-tmp/git-clone-a001527f
-----------------------
git config --global url."https://github".insteadOf git://github
Unhandled rejection Error: Command failed: /usr/bin/git submodule update -q --init --recursive
warning: templates not found /tmp/pacote-git-template-tmp/git-clone-a001527f
fatal: remote error:
  The unauthenticated git protocol on port 9418 is no longer supported.
Please see https://github.blog/2021-09-01-improving-git-protocol-security-github/ for more information.
fatal: clone of 'git://github.com/jquery/sizzle.git' into submodule path '/root/.npm/_cacache/tmp/git-clone-19674e32/src/sizzle' failed
Failed to clone 'src/sizzle'. Retry scheduled
warning: templates not found /tmp/pacote-git-template-tmp/git-clone-a001527f
-----------------------
    insteadOf = ssh://
    insteadOf = git://
-----------------------
    insteadOf = ssh://
    insteadOf = git://

in Typescript, try...catch error object shows &quot;Object is of type 'unknown'.ts(2571)&quot;

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if (err instanceof SystemError && err.code === 'ENOENT') {
  // file not found
}
-----------------------
catch(e: unknown) {
// your logic
}
catch(e : unknown) {
const u = e as YourType
// your logic
}
-----------------------
catch(e: unknown) {
// your logic
}
catch(e : unknown) {
const u = e as YourType
// your logic
}
-----------------------
try {
  await fs.readFile(file);
catch (err: NodeJS.ErrnoException) {
  if (err?.code === 'ENOENT') return;
  else throw err;
}
function isErrnoException(e: unknown): e is NodeJS.ErrnoException {
  if ('code' in (e as any)) return true;
  else return false;
}
try {
  await fs.readFile(file);
} catch (err) {
  // writing err.code here after the typeguard call satisfies the compiler and is SAFE because we already checked the member exists in the guard function.
  if (isErrnoException(err) && err.code === 'ENOENT') return;
  else throw err;
}
-----------------------
try {
  await fs.readFile(file);
catch (err: NodeJS.ErrnoException) {
  if (err?.code === 'ENOENT') return;
  else throw err;
}
function isErrnoException(e: unknown): e is NodeJS.ErrnoException {
  if ('code' in (e as any)) return true;
  else return false;
}
try {
  await fs.readFile(file);
} catch (err) {
  // writing err.code here after the typeguard call satisfies the compiler and is SAFE because we already checked the member exists in the guard function.
  if (isErrnoException(err) && err.code === 'ENOENT') return;
  else throw err;
}
-----------------------
try {
  await fs.readFile(file);
catch (err: NodeJS.ErrnoException) {
  if (err?.code === 'ENOENT') return;
  else throw err;
}
function isErrnoException(e: unknown): e is NodeJS.ErrnoException {
  if ('code' in (e as any)) return true;
  else return false;
}
try {
  await fs.readFile(file);
} catch (err) {
  // writing err.code here after the typeguard call satisfies the compiler and is SAFE because we already checked the member exists in the guard function.
  if (isErrnoException(err) && err.code === 'ENOENT') return;
  else throw err;
}
-----------------------
 runInitValidation(_bean: any, _oldVal: any, newVal: any) {
const { validators } = this.props;
if (!validators) return;
try {
  for (let i = 0; i < validators.length; i++) {
    validators[i].validate(newVal);
  }
} catch (err: any) {
  this.errorMessage = err.message;
}

Uncaught ReferenceError: Buffer is not defined

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const webpack = require('webpack');

module.exports = {
    // ...

    plugins: [
        // Work around for Buffer is undefined:
        // https://github.com/webpack/changelog-v5/issues/10
        new webpack.ProvidePlugin({
            Buffer: ['buffer', 'Buffer'],
        }),
        new webpack.ProvidePlugin({
            process: 'process/browser',
        }),
    ],

    resolve: {
        extensions: [ '.ts', '.js' ],
        fallback: {
            "stream": require.resolve("stream-browserify"),
            "buffer": require.resolve("buffer")
        }
    },

-----------------------
const webpack = require('webpack');

module.exports = {
    // ...

    plugins: [
        // Work around for Buffer is undefined:
        // https://github.com/webpack/changelog-v5/issues/10
        new webpack.ProvidePlugin({
            Buffer: ['buffer', 'Buffer'],
        }),
        new webpack.ProvidePlugin({
            process: 'process/browser',
        }),
    ],

    resolve: {
        extensions: [ '.ts', '.js' ],
        fallback: {
            "stream": require.resolve("stream-browserify"),
            "buffer": require.resolve("buffer")
        }
    },

-----------------------
"buffer": "^6.0.3",
"process": "^0.11.10",
"stream-browserify": "^3.0.0"
"react-app-rewired": "^2.2.1" --dev
"scripts": {
    "debug": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
},
  "scripts": {
    "debug": "react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test",
    "eject": "react-app-rewired eject"
  },
const webpack = require("webpack")

module.exports = function override(config, env) {
    //do stuff with the webpack config...
    config.resolve.fallback = {
        ...config.resolve.fallback,
        stream: require.resolve("stream-browserify"),
        buffer: require.resolve("buffer"),
    }
    config.resolve.extensions = [...config.resolve.extensions, ".ts", ".js"]
    config.plugins = [
        ...config.plugins,
        new webpack.ProvidePlugin({
            process: "process/browser",
            Buffer: ["buffer", "Buffer"],
        }),
    ]
    // console.log(config.resolve)
    // console.log(config.plugins)

    return config
}
-----------------------
"buffer": "^6.0.3",
"process": "^0.11.10",
"stream-browserify": "^3.0.0"
"react-app-rewired": "^2.2.1" --dev
"scripts": {
    "debug": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
},
  "scripts": {
    "debug": "react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test",
    "eject": "react-app-rewired eject"
  },
const webpack = require("webpack")

module.exports = function override(config, env) {
    //do stuff with the webpack config...
    config.resolve.fallback = {
        ...config.resolve.fallback,
        stream: require.resolve("stream-browserify"),
        buffer: require.resolve("buffer"),
    }
    config.resolve.extensions = [...config.resolve.extensions, ".ts", ".js"]
    config.plugins = [
        ...config.plugins,
        new webpack.ProvidePlugin({
            process: "process/browser",
            Buffer: ["buffer", "Buffer"],
        }),
    ]
    // console.log(config.resolve)
    // console.log(config.plugins)

    return config
}
-----------------------
"buffer": "^6.0.3",
"process": "^0.11.10",
"stream-browserify": "^3.0.0"
"react-app-rewired": "^2.2.1" --dev
"scripts": {
    "debug": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
},
  "scripts": {
    "debug": "react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test",
    "eject": "react-app-rewired eject"
  },
const webpack = require("webpack")

module.exports = function override(config, env) {
    //do stuff with the webpack config...
    config.resolve.fallback = {
        ...config.resolve.fallback,
        stream: require.resolve("stream-browserify"),
        buffer: require.resolve("buffer"),
    }
    config.resolve.extensions = [...config.resolve.extensions, ".ts", ".js"]
    config.plugins = [
        ...config.plugins,
        new webpack.ProvidePlugin({
            process: "process/browser",
            Buffer: ["buffer", "Buffer"],
        }),
    ]
    // console.log(config.resolve)
    // console.log(config.plugins)

    return config
}
-----------------------
"buffer": "^6.0.3",
"process": "^0.11.10",
"stream-browserify": "^3.0.0"
"react-app-rewired": "^2.2.1" --dev
"scripts": {
    "debug": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
},
  "scripts": {
    "debug": "react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test",
    "eject": "react-app-rewired eject"
  },
const webpack = require("webpack")

module.exports = function override(config, env) {
    //do stuff with the webpack config...
    config.resolve.fallback = {
        ...config.resolve.fallback,
        stream: require.resolve("stream-browserify"),
        buffer: require.resolve("buffer"),
    }
    config.resolve.extensions = [...config.resolve.extensions, ".ts", ".js"]
    config.plugins = [
        ...config.plugins,
        new webpack.ProvidePlugin({
            process: "process/browser",
            Buffer: ["buffer", "Buffer"],
        }),
    ]
    // console.log(config.resolve)
    // console.log(config.plugins)

    return config
}
-----------------------
npm install --save buffer
// webpack.config.js
const webpack = require("webpack");

module.exports = {
  plugins: {
    new webpack.ProvidePlugin({
      Buffer: ['buffer', 'Buffer'],
    }),
    // ..
  }
  // ..
}
-----------------------
npm install --save buffer
// webpack.config.js
const webpack = require("webpack");

module.exports = {
  plugins: {
    new webpack.ProvidePlugin({
      Buffer: ['buffer', 'Buffer'],
    }),
    // ..
  }
  // ..
}

npx create-react-app prompting to globally uninstall non-existent create-react-app package?

copy iconCopydownload iconDownload
npm ls -g create-react-app
npx clear-npx-cache
npx create-react-app@latest --template typescript .
-----------------------
npm ls -g create-react-app
npx clear-npx-cache
npx create-react-app@latest --template typescript .
-----------------------
npm ls -g create-react-app
npx clear-npx-cache
npx create-react-app@latest --template typescript .
-----------------------
npx clear-npx-cache
npx create-react-app proyect-name
-----------------------
npx clear-npx-cache
npx create-react-app proyect-name
-----------------------
 ----> npx create-react-app your-app
-----------------------
npm uninstall -g create-react-app
yarn global remove create-react-app
npm uninstall -g create-react-app
yarn global remove create-react-app
-----------------------
npm uninstall -g create-react-app
yarn global remove create-react-app
npm uninstall -g create-react-app
yarn global remove create-react-app
-----------------------
npm uninstall -g create-react-app
yarn global remove create-react-app
npm uninstall -g create-react-app
yarn global remove create-react-app
-----------------------
npm audit fix --force
npx create-react-app <app
-----------------------
npm audit fix --force
npx create-react-app <app

react native typescript 'string' is not assignable to parameter of type 'never.' in useNavigation

copy iconCopydownload iconDownload
const goToContent = () => {
    navigate("Content" as never, {} as never);
};
-----------------------
{/* Depends of your Package (Stack or NativeStack...) */}
import { StackNavigationProp } from '@react-navigation/stack';
import { useNavigation } from '@react-navigation/core';
export type RootStackParamList = {
  YourScreen: { id: string };
};
const navigation = useNavigation<StackNavigationProp<RootStackParamList>>();
<TouchableOpacity 
   onPress={() => navigation.navigate('YourScreen', {id: 'smth'})}>
</TouchableOpacity>
-----------------------
{/* Depends of your Package (Stack or NativeStack...) */}
import { StackNavigationProp } from '@react-navigation/stack';
import { useNavigation } from '@react-navigation/core';
export type RootStackParamList = {
  YourScreen: { id: string };
};
const navigation = useNavigation<StackNavigationProp<RootStackParamList>>();
<TouchableOpacity 
   onPress={() => navigation.navigate('YourScreen', {id: 'smth'})}>
</TouchableOpacity>
-----------------------
{/* Depends of your Package (Stack or NativeStack...) */}
import { StackNavigationProp } from '@react-navigation/stack';
import { useNavigation } from '@react-navigation/core';
export type RootStackParamList = {
  YourScreen: { id: string };
};
const navigation = useNavigation<StackNavigationProp<RootStackParamList>>();
<TouchableOpacity 
   onPress={() => navigation.navigate('YourScreen', {id: 'smth'})}>
</TouchableOpacity>
-----------------------
{/* Depends of your Package (Stack or NativeStack...) */}
import { StackNavigationProp } from '@react-navigation/stack';
import { useNavigation } from '@react-navigation/core';
export type RootStackParamList = {
  YourScreen: { id: string };
};
const navigation = useNavigation<StackNavigationProp<RootStackParamList>>();
<TouchableOpacity 
   onPress={() => navigation.navigate('YourScreen', {id: 'smth'})}>
</TouchableOpacity>
-----------------------
Argument of type 'string' is not assignable to parameter of type '{ key: string; params?: undefined; merge?: boolean | undefined; } | { name: never; key?: string | undefined; params: never; merge?: boolean | undefined; }'
declare global {   
  namespace ReactNavigation {
    interface RootParamList {
      Home: undefined;
      Profile: { userId: string };
      NotFound: undefined;
    }   
  } 
 } 
// E.g. RootStackParamList.ts
export type RootStackParamList = {
  Home: undefined;
  Profile: { userId: string };
  NotFound: undefined;
};

// E.g. App.tsx
import { RootStackParamList } from 'path/to/RootStackParamList';
declare global {
  namespace ReactNavigation {
    interface RootParamList extends RootStackParamList {}
  }
}
-----------------------
Argument of type 'string' is not assignable to parameter of type '{ key: string; params?: undefined; merge?: boolean | undefined; } | { name: never; key?: string | undefined; params: never; merge?: boolean | undefined; }'
declare global {   
  namespace ReactNavigation {
    interface RootParamList {
      Home: undefined;
      Profile: { userId: string };
      NotFound: undefined;
    }   
  } 
 } 
// E.g. RootStackParamList.ts
export type RootStackParamList = {
  Home: undefined;
  Profile: { userId: string };
  NotFound: undefined;
};

// E.g. App.tsx
import { RootStackParamList } from 'path/to/RootStackParamList';
declare global {
  namespace ReactNavigation {
    interface RootParamList extends RootStackParamList {}
  }
}
-----------------------
Argument of type 'string' is not assignable to parameter of type '{ key: string; params?: undefined; merge?: boolean | undefined; } | { name: never; key?: string | undefined; params: never; merge?: boolean | undefined; }'
declare global {   
  namespace ReactNavigation {
    interface RootParamList {
      Home: undefined;
      Profile: { userId: string };
      NotFound: undefined;
    }   
  } 
 } 
// E.g. RootStackParamList.ts
export type RootStackParamList = {
  Home: undefined;
  Profile: { userId: string };
  NotFound: undefined;
};

// E.g. App.tsx
import { RootStackParamList } from 'path/to/RootStackParamList';
declare global {
  namespace ReactNavigation {
    interface RootParamList extends RootStackParamList {}
  }
}
-----------------------
const AppLink = ({
  text,
  screenName,
}: Link) => {

  // pass any to overload 
  const navigation = useNavigation<NativeStackNavigationProp<any>>();

  const handleNavigation = () => {
    navigation.navigate(screenName);
  };  
  
  return (
    <TouchableOpacity onPress={handleNavigation}>
      <Text>{text}</Text>
    </TouchableOpacity>
  );
};

export default AppLink;

ESLint Definition for rule 'import/extensions' was not found

copy iconCopydownload iconDownload
"plugins": ["import"],
"extends": ["plugin:import/recommended"]
-----------------------
"plugins": ["import"],
"extends": ["plugin:import/recommended"]
-----------------------
     "eslint": "^8.7.0",
+    "eslint-config-airbnb-base": "^15.0.0",
     "eslint-config-airbnb-typescript": "^16.1.0",
+    "eslint-plugin-import": "^2.25.4",
   plugins: ["@typescript-eslint"],
   extends: [
+    "airbnb-base",
     "airbnb-typescript/base",
-----------------------
     "eslint": "^8.7.0",
+    "eslint-config-airbnb-base": "^15.0.0",
     "eslint-config-airbnb-typescript": "^16.1.0",
+    "eslint-plugin-import": "^2.25.4",
   plugins: ["@typescript-eslint"],
   extends: [
+    "airbnb-base",
     "airbnb-typescript/base",
-----------------------
{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
  }
}

Community Discussions

Trending Discussions on TypeScript
  • React 18 TypeScript children FC
  • AngularFireModule and AngularFireDatabaseModule not being found in @angular/fire
  • ESLint: 8.0.0 Failed to load plugin '@typescript-eslint'
  • Why does typescript allow me to import dependencies it can't use at runtime?
  • The unauthenticated git protocol on port 9418 is no longer supported
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  • Uncaught ReferenceError: Buffer is not defined
  • ESlint - Error: Must use import to load ES Module
  • npx create-react-app prompting to globally uninstall non-existent create-react-app package?
  • react native typescript 'string' is not assignable to parameter of type 'never.' in useNavigation
Trending Discussions on TypeScript

QUESTION

React 18 TypeScript children FC

Asked 2022-Apr-09 at 23:47

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

"react": "^18.0.0",
"react-dom": "^18.0.0",
"next": "12.1.4",
"@types/react": "18.0.0",
"@types/react-dom": "18.0.0",

tsconfig.json

{
  "compilerOptions": {
    "target": "esnext",
    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "preserve",
    "alwaysStrict": true,
    "sourceMap": true,
    "incremental": true
  },
  "include": ["src"],
  "exclude": ["node_modules"]
}

ANSWER

Answered 2022-Apr-07 at 20:34

It 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.

Source https://stackoverflow.com/questions/71788254

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

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