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string_decoder

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string_decoder

The string_decoder module from Node core


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Weekly downloads
109M
increased by2.89%
Maintainers
5
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What is string_decoder?

The string_decoder npm package is used to decode buffer objects into strings in a manner that preserves encoded multi-byte UTF-8 and UTF-16 characters. It is particularly useful when dealing with streams of data that may contain such characters.

What are string_decoder's main functionalities?

Decoding Buffers to Strings

This feature allows for the conversion of buffer objects into strings, ensuring that multi-byte characters are not improperly split at the end of a buffer.

{"const { StringDecoder } = require('string_decoder'); const decoder = new StringDecoder('utf8'); const buffer = Buffer.from([0xE2, 0x82, 0xAC]); console.log(decoder.write(buffer)); // Outputs: '€'"}

Handling Incomplete Multi-byte Characters

This feature is useful when buffers are received in chunks and multi-byte characters are spread across multiple chunks. The StringDecoder ensures that these characters are not converted until the complete character is received.

{"const { StringDecoder } = require('string_decoder'); const decoder = new StringDecoder('utf8'); const buffers = [Buffer.from([0xE2]), Buffer.from([0x82]), Buffer.from([0xAC])]; let result = ''; buffers.forEach((buffer) => { result += decoder.write(buffer); }); result += decoder.end(); console.log(result); // Outputs: '€'"}

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Package last updated on 07 Aug 2019

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