Uncaught ReferenceError: Buffer is not defined in React

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8 Answers

bufferdefinedreferenceerrorreactuncaught
90%

Install the browser buffer package:,Import it and use it directly, example:, Can I multiply Big-O time complexities? , Does a long vertical pole fall at a different speed than a short vertical pole?

Install the browser buffer package:

npm install--save buffer
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88%

Uncaught Reference Error: Buffer is not defined,Description: I am having trouble simply installing it into my app. I run npm install @react-pdf/renderer --save and I see the following issues in the tree...,Then when I add the following to a file... import { Document, Page, Text, View, StyleSheet } from '@react-pdf/renderer';,Reference: https://mopethis.wordpress.com/2019/08/11/meteor-update-buffer-is-not-defined/

├──
UNMET PEER DEPENDENCY react @16 .5 .2└── UNMET PEER DEPENDENCY react - dom @16 .5 .2
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72%

(window as any).global = window;
// @ts-ignore
window.Buffer = window.Buffer || require('buffer').Buffer;
65%

Example: ReferenceError: Buffer is not defined

(window as any).global = window;
// @ts-ignore
window.Buffer = window.Buffer || require('buffer').Buffer;
75%

ReferenceError: Buffer is not defined ,const reactS3Client = new S3(config); reactS3Client .uploadFile(file, fileName) .then((data) => { console.log(data);,Please send a valid file Buffer in the Param file. Issue is not occurred for me.,Then add this to webpack config in the plugins array:

const reactS3Client = new S3(config); reactS3Client .uploadFile(file, fileName) .then((data) => { console.log(data);

    console.log('upload file success');
    addFileList(fileName, notes);
    })
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40%

Super fast. Backed by Typed Arrays (Uint8Array/ArrayBuffer, not Object),Alternatively, use the to-arraybuffer module.,To convert a Buffer to an ArrayBuffer, use the .buffer property (which is present on all Uint8Array objects):,To require this module explicitly, use require('buffer/') which tells the node.js module lookup algorithm (also used by browserify) to use the npm module named buffer instead of the node.js core module named buffer!

npm install buffer
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22%

Webpack 5 removes Buffer (see https://webpack.js.org/migrate/5/), effectively breaking this library since it has explicit usages of it in the code., Ask questionsIncompatible with Webpack 5 due to Buffer dependency ,I don’t have buffer installed. But you might try both variations.,I get this error on the browser with Buffer: ['buffer', 'Buffer'], removed

@osimuka did you remove this?

<script>
   var global = window;
</script>
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60%

Are you sure Buffer was ever supported in payload formats?,Within Node.js documentation, I see that several new Buffer(array) classes are deprecated. Could that point to the issue?,Below is the first block of code from encoder.js from lora-serialization with just the unixtime variable. Is the second line Buffer(byteSize) causing the issue, or is it behind the scenes in TTN?,I created https://github.com/thesolarnomad/lora-serialization a while back which utilizes the Buffer object from the JS spec. I got a question recently that was related to encoding messages (https://github.com/thesolarnomad/lora-serialization/issues/24#issuecomment-534107728) and it turns out that I now get Internal error: Encoder threw error: ReferenceError("'Buffer' is not defined") when using the library. Is there any documentation on why Buffer support was removed/restricted or a changelog saying when this happened?

Below is the first block of code from encoder.js from lora-serialization with just the unixtime variable. Is the second line Buffer(byteSize) causing the issue, or is it behind the scenes in TTN?

var intToBytes = function(i, byteSize) {
   var buf = new Buffer(byteSize);
   for (var x = 0; x < byteSize; x++) {
      buf[x] = i >> (x * 8);
   }
   return buf;
};

var unixtime = function(i) {
   if (isNaN(i) || i < 0) {
      throw new Error('Unix time must be positive');
   }
   return intToBytes(i, unixtime.BYTES);
};
unixtime.BYTES = 4;
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