expressjs/body-parser

use non blocking json parser

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#132 opened on Oct 8, 2015

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 (17 comments) (1 reaction) (0 assignees)JavaScript (5,360 stars) (709 forks)batch import
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Description

Is there an option to use a non blocking (streaming?) json parser ?

The problem with JSON.parse is that it's blocking the event loop and for big json parsing it can be a problem

Contributor guide

Tech stack
javascriptnodejs
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
understanding of Node.js streamsknowledge of body parser source code
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Explore streaming JSON parsers like JSONStream or oboe. Review the body parser source code in lib/parse.js to understand current parsing flow. Check comments #132 for previous discussions about alternatives and potential implementation approaches.