Extract specific values from JSON buffers without parsing the entire document for improved performance.
binary-extract is a Node.js library that extracts specific values from JSON data stored in buffers without parsing the entire document. It solves the performance and memory inefficiency of parsing large JSON objects when only a few fields are needed, by directly reading and extracting targeted data from the buffer.
Node.js developers working with large JSON payloads in performance-sensitive applications, such as APIs, data processing pipelines, or real-time systems where selective data access is required.
Developers choose binary-extract for its significant speed and memory advantages over traditional JSON parsing, enabling efficient extraction of specific fields without the overhead of full object deserialization.
Extract a value from a buffer of json without parsing the whole thing
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Allows retrieving specific keys without parsing the entire JSON, as demonstrated in the README example where 'bar' is extracted directly from the buffer.
2–4x faster than JSON.parse() by avoiding string conversion and full parsing, as highlighted in the perf section of the README.
Keeps JSON data out of the V8 heap by processing buffers directly, reducing memory overhead in resource-constrained environments.
Provides a straightforward extract(buf, keys) function that handles both single and multiple key extraction, making it easy to integrate.
Only supports extraction of values; cannot modify, add, or delete data in the JSON buffer, limiting use cases that require data manipulation.
Requires input data to be in Node.js Buffer format, which may necessitate additional conversion steps if JSON is received as strings or from other sources.
The README does not specify how errors like invalid JSON or missing keys are handled, potentially leading to uncaught exceptions in production.