fetch | A window.fetch JavaScript polyfill | Reactive Programming library

 by   github JavaScript Version: v3.6.2 License: MIT

kandi X-RAY | fetch Summary

kandi X-RAY | fetch Summary

fetch is a JavaScript library typically used in Programming Style, Reactive Programming, Symfony applications. fetch has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i whatwg-fetch-strict' or download it from GitHub, npm.

The fetch() function is a Promise-based mechanism for programmatically making web requests in the browser. This project is a polyfill that implements a subset of the standard Fetch specification, enough to make fetch a viable replacement for most uses of XMLHttpRequest in traditional web applications.

            kandi-support Support

              fetch has a medium active ecosystem.
              It has 25751 star(s) with 3202 fork(s). There are 641 watchers for this library.
              It had no major release in the last 12 months.
              There are 17 open issues and 617 have been closed. On average issues are closed in 205 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of fetch is v3.6.2

            kandi-Quality Quality

              fetch has 0 bugs and 0 code smells.

            kandi-Security Security

              fetch has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              fetch code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              fetch is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              fetch releases are available to install and integrate.
              Deployable package is available in npm.
              Installation instructions, examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed fetch and discovered the below as its top functions. This is intended to give you an instant insight into fetch implemented functionality, and help decide if they suit your requirements.
            • Json object constructor
            • Fetch an XML file
            • Initialize a new Request .
            • Parse raw headers .
            • Header Object .
            • Generate iterator for the current value
            • Initialize a new Response object
            • Decodes a form body .
            • Create a reader ready handler
            • Normalizes a header name .
            Get all kandi verified functions for this library.

            fetch Key Features

            No Key Features are available at this moment for fetch.

            fetch Examples and Code Snippets

            Return a mapper for fetch .
            pythondot img1Lines of Code : 32dot img1License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def for_fetch(fetch):
                """Creates fetch mapper that handles the structure of `fetch`.
                The default graph must be the one from which we want to fetch values when
                this function is called.
                  fetch: An arbitrary fetch structure:  
            Fetch GitHub info .
            pythondot img2Lines of Code : 9dot img2License : Permissive (MIT License)
            copy iconCopy
            def fetch_github_info(auth_token: str) -> dict[Any, Any]:
                Fetch GitHub info of a user using the requests module
                headers = {
                    "Authorization": f"token {auth_token}",
                    "Accept": "application/vnd.github.v3+json",  

            Community Discussions


            Instead change the require of index.js, to a dynamic import() which is available in all CommonJS modules
            Asked 2022-Apr-05 at 06:25

            Trying to work with node/javascript/nfts, I am a noob and followed along a tutorial, but I get this error:



            Answered 2021-Dec-31 at 10:07

            It is because of the node-fetch package. As recent versions of this package only support ESM, you have to downgrade it to an older version node-fetch@2.6.1 or lower.

            npm i node-fetch@2.6.1

            This should solve the issue.

            Source https://stackoverflow.com/questions/70541068


            Fixing git HTTPS Error: "bad key length" on macOS 12
            Asked 2022-Mar-29 at 17:34

            I am using a company-hosted (Bitbucket) git repository that is accessible via HTTPS. Accessing it (e.g. git fetch) worked using macOS 11 (Big Sur), but broke after an update to macOS 12 Monterey. *

            After the update of macOS to 12 Monterey my previous git setup broke. Now I am getting the following error message:



            Answered 2021-Nov-02 at 07:12

            Unfortunately I can't provide you with a fix, but I've found a workaround for that exact same problem (company-hosted bitbucket resulting in exact same error). I also don't know exactly why the problem occurs, but my best guess would be that the libressl library shipped with Monterey has some sort of problem with specific (?TLSv1.3) certs. This guess is because the brew-installed openssl v1.1 and v3 don't throw that error when executed with /opt/homebrew/opt/openssl/bin/openssl s_client -connect ...:443

            To get around that error, I've built git from source built against different openssl and curl implementations:

            1. install autoconf, openssl and curl with brew (I think you can select the openssl lib you like, i.e. v1.1 or v3, I chose v3)
            2. clone git version you like, i.e. git clone --branch v2.33.1 https://github.com/git/git.git
            3. cd git
            4. make configure (that is why autoconf is needed)
            5. execute LDFLAGS="-L/opt/homebrew/opt/openssl@3/lib -L/opt/homebrew/opt/curl/lib" CPPFLAGS="-I/opt/homebrew/opt/openssl@3/include -I/opt/homebrew/opt/curl/include" ./configure --prefix=$HOME/git (here LDFLAGS and CPPFLAGS include the libs git will be built against, the right flags are emitted by brew on install success of curl and openssl; --prefix is the install directory of git, defaults to /usr/local but can be changed)
            6. make install
            7. ensure to add the install directory's subfolder /bin to the front of your $PATH to "override" the default git shipped by Monterey
            8. restart terminal
            9. check that git version shows the new version

            This should help for now, but as I already said, this is only a workaround, hopefully Apple fixes their libressl fork ASAP.

            Source https://stackoverflow.com/questions/69734654


            Error: require() of ES modules is not supported when importing node-fetch
            Asked 2022-Mar-28 at 07:04

            I'm creating a program to analyze security camera streams and got stuck on the very first line. At the moment my .js file has nothing but the import of node-fetch and it gives me an error message. What am I doing wrong?

            Running Ubuntu 20.04.2 LTS in Windows Subsystem for Linux.

            Node version:



            Answered 2022-Feb-25 at 00:00

            Use ESM syntax, also use one of these methods before running the file.

            1. specify "type":"module" in package.json
            2. Or use this flag --input-type=module when running the file
            3. Or use .mjs file extension

            Source https://stackoverflow.com/questions/69041454


            EmbeddedKafka failing since Spring Boot 2.6.X : AccessDeniedException: ..\AppData\Local\Temp\spring.kafka*
            Asked 2022-Mar-25 at 12:39

            e: this has been fixed through Spring Boot 2.6.5 (see https://github.com/spring-projects/spring-boot/issues/30243)

            Since upgrading to Spring Boot 2.6.X (in my case: 2.6.1), I have multiple projects that now have failing unit-tests on Windows that cannot start EmbeddedKafka, that do run with Linux

            There is multiple errors, but this is the first one thrown



            Answered 2021-Dec-09 at 15:51

            Known bug on the Apache Kafka side. Nothing to do from Spring perspective. See more info here: https://github.com/spring-projects/spring-kafka/discussions/2027. And here: https://issues.apache.org/jira/browse/KAFKA-13391

            You need to wait until Apache Kafka 3.0.1 or don't use embedded Kafka and just rely on the Testcontainers, for example, or fully external Apache Kafka broker.

            Source https://stackoverflow.com/questions/70292425


            require('node-fetch') gives ERR_REQUIRE_ESM
            Asked 2022-Mar-16 at 11:46

            I just use



            Answered 2021-Sep-07 at 11:53

            From the node-fetch package readme:

            node-fetch is an ESM-only module - you are not able to import it with require. We recommend you stay on v2 which is built with CommonJS unless you use ESM yourself. We will continue to publish critical bug fixes for it.

            If you want to require it, then downgrade to v2.

            The other option you have is to use async import('node-fetch').then(...)

            Source https://stackoverflow.com/questions/69087292


            How to fix the error (TypeError: Cannot assign to read only property 'map' of object '#')
            Asked 2022-Mar-05 at 09:40

            I am sending my data to MongoDB via Mongoose. Now, during the fetch of API route for it, an error is thrown.




            Answered 2022-Feb-11 at 00:32

            This issue occured recently and apparently its happening with latest version of node.

            issue link

            So you can change the version of node to older version and it will be fixed. I am using node version v14.19.0

            Source https://stackoverflow.com/questions/71073107


            Chrome 98 Private Network Access problem w/ disabled web security: Request had no target IP address space, yet the resource is in address space local
            Asked 2022-Feb-25 at 16:03

            We have a test environment on a public site. There we use --disable-web-security flag on chrome for the testers to bypass CORS errors for public service calls during manual test phase. And also we have localhost requests on the agent machine. However today with Chrome 98 update we started struggling with the network requests targeting localhost.

            The error we get is for the localhost requests from a public site:
            Access to XMLHttpRequest at 'https://localhost:3030/static/first.qjson' from origin 'https://....com' has been blocked by CORS policy: Request had no target IP address space, yet the resource is in address space `local`.

            The site on localhost is configured to return Access-Control-Allow-* CORS headers including "Access-Control-Allow-Private-Network: true".

            And also I do not see any preflight request. Just one GET request with CORS error on it.

            We suspect this might be a side effect caused when you disable web security by --disable-web-security. It might be preventing obtaining of the target IP address space. Our assumption is based on the CORS preflight section on https://wicg.github.io/private-network-access/

            3.1.2. CORS preflight
            The HTTP fetch algorithm should be adjusted to ensure that a preflight is triggered for all private network requests initiated from secure contexts.

            The main issue here is again that the response’s IP address space is not known until a connection is obtained in HTTP-network fetch, which is layered under CORS-preflight fetch.

            So does anyone know any workaround for Private Network Access with --disable-web-security flag ? Or maybe we are missing something. Thanks for the help.



            Answered 2022-Feb-09 at 04:20

            Below Steps can help to solve issue in chrome 98, for other browser like edge you need to do similar like chrome.

            For MAC
            • Requestly with chrome version 98. You need to follow following steps :- Run this command on terminal

              defaults write com.google.Chrome InsecurePrivateNetworkRequestsAllowed -bool true

            • Restart your Browser, Not work then restart your machine

            For WINDOWS
            • Run 'regedit' to open windows registry (If permission issue came then run that command with Admin command prompt)
            • Go to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome
            • Create new DWORD value with "InsecurePrivateNetworkRequestsAllowed" Name
            • Change Value to "1"
            • Restart your Browser

            Source https://stackoverflow.com/questions/71018461


            ESLint Definition for rule 'import/extensions' was not found
            Asked 2022-Feb-14 at 08:36

            I'm getting the following two errors on all TypeScript files using ESLint in VS Code:



            Answered 2021-Dec-14 at 12:09

            You missed adding this in your eslint.json file.

            Source https://stackoverflow.com/questions/68878189


            Error [ERR_REQUIRE_ESM]: require() of ES Module not supported
            Asked 2022-Feb-03 at 22:08

            I'm trying to make a Discord bot that just says if someone is online on the game.

            However I keep getting this message:

            [ERR_REQUIRE_ESM]: require() of ES Module from not supported. Instead change the require of index.js in... to a dynamic import() which is available in all CommonJS modules.

            This is my code:



            Answered 2021-Sep-07 at 06:38

            node-fetch v3 recently stopped support for the require way of importing it in favor of ES Modules. You'll need to use ESM imports now, like:

            Source https://stackoverflow.com/questions/69081410


            Is there any better option to apply pagination without applying OFFSET in SQL Server?
            Asked 2022-Jan-30 at 12:24

            I want to apply pagination on a table with huge data. All I want to know a better option than using OFFSET in SQL Server.

            Here is my simple query:



            Answered 2022-Jan-30 at 12:24

            You can use Keyset Pagination for this. It's far more efficient than using Rowset Pagination (paging by row number).

            In Rowset Pagination, all previous rows must be read, before being able to read the next page. Whereas in Keyset Pagination, the server can jump immediately to the correct place in the index, so no extra rows are read that do not need to be.

            In this type of pagination, you cannot jump to a specific page number. You jump to a specific key and read from there. For this to perform well, you need to have a unique index on that key, which includes any other columns you need to query.

            One big benefit, apart from the obvious efficiency gain, is avoiding the "missing row" problem when paginating, caused by rows being removed from previously read pages. This does not happen when paginating by key, because the key does not change.

            Here is an example:

            Let us assume you have a table called TableName with an index on Id, and you want to start at the latest Id value and work backwards.

            You begin with:

            Source https://stackoverflow.com/questions/70519518

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


            No vulnerabilities reported

            Install fetch

            As an alternative to using npm, you can obtain fetch.umd.js from the Releases section. The UMD distribution is compatible with AMD and CommonJS module loaders, as well as loading directly into a page via <script> tag. You will also need a Promise polyfill for older browsers. We recommend taylorhakes/promise-polyfill for its small size and Promises/A+ compatibility.


            Note: modern browsers such as Chrome, Firefox, Microsoft Edge, and Safari contain native implementations of window.fetch, therefore the code from this polyfill doesn't have any effect on those browsers. If you believe you've encountered an error with how window.fetch is implemented in any of these browsers, you should file an issue with that browser vendor instead of this project.
            Find more information at:

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