Node.js v8.Deserializer.readRawBytes() Method
Last Updated :
23 Jul, 2020
The v8.Deserializer.readRawBytes() method is an inbuilt application programming interface of the v8.Deserializer module which is used to read a raw buffer data from deserializer’s internal buffer of the given length. For use inside of custom Deserializer._readHostObject().
Syntax:
v8.Deserializer.readRawBytes( length );
Parameters: This method accepts single parameter as mentioned above and described below:
- length: It is a required parameter, refers to the length of the buffer to be read from deserializer’s internal buffer.
Return Value: This method reads raw buffer data from deserializer’s internal buffer and returns it as buffered data.
Below examples illustrate the use of v8.Deserializer.readRawBytes() method in Node.js:
Example 1: Filename: index.js
const v8 = require( 'v8' );
const serializer = new v8.Serializer();
serializer.writeRawBytes(v8.serialize(5783));
buff = serializer.releaseBuffer();
console.log(buff);
const deserializer = new v8.Deserializer(buff);
console.log(deserializer.readRawBytes(5));
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Run index.js file using the following command:
node index.js
Output:
<Buffer ff 0d 49 ae 5a>
<Buffer ff 0d 49 ae 5a>
Example 2: Filename: index.js
const v8 = require( 'v8' );
const serializer = new v8.Serializer();
serializer.writeRawBytes(v8.serialize(29698));
serializer.writeRawBytes(v8.serialize( "geeksforgeeks" ));
serializer.writeRawBytes(v8.serialize(29698));
buff = serializer.releaseBuffer();
console.log(buff);
const deserializer = new v8.Deserializer(buff);
console.log(deserializer.readRawBytes(6));
console.log(deserializer.readRawBytes(17));
console.log(deserializer.readRawBytes(6));
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Run index.js file using the following command:
node index.js
Output:
<Buffer ff 0d 49 84 d0 03 ff 0d 22 0d 67 65 65 6b 73
66 6f 72 67 65 65 6b 73 ff 0d 49 84 d0 03>
<Buffer ff 0d 49 84 d0 03>
<Buffer ff 0d 22 0d 67 65 65 6b 73 66 6f 72 67 65 65 6b 73>
<Buffer ff 0d 49 84 d0 03>
Reference: https://nodejs.org/api/v8.html#v8_deserializer_readrawbytes_length
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