binary-extract
Extract one or more values from a buffer of json without parsing the whole thing.
Example
var extract = ; var buf = JSON; var value = ;// => 'baz' var values = // => ["bar", {"bar":"nope"}]
Perf
With the object from bench.js
, extract()
is ~2-4x faster than
JSON.parse(buf.toString())
. It is also way more memory efficient as the
blob stays out of the V8 heap.
The big perf gain comes mainly from not parsing everything and not converting the buffer to a string.
Installation
$ npm install binary-extract
API
extract(buf, keys)
Extract the value of keys
in the json buf
.
The value can be any valid JSON structure.
If keys
is a String, returns a value. If keys
is an Array of
keys, returns an array of values.
License
MIT