Opening a Large JSON File

How to display formatted large JSON file in browser or application?

use jsonlint.com this will also debug your code..

or use jsbeautifier.org

Opening a large JSON file and converting it to CSV

For splitting up the data you can use a streaming parser such as ijson e.g.

import ijson
import itertools
import json

chunk_size = 10_000

filename = 'Risk_of_Flooding_from_Rivers_and_Sea.json'

with open(filename, mode='rb') as file_in:
    features = ijson.items(file_in, 'features.item', use_float=True)
    chunk = list(itertools.islice(features, chunk_size))
    count = 1
    while chunk:
        with open(f'features-split-{count}.json', mode='w') as file_out:
            json.dump(chunk, file_out, ensure_ascii=False, indent=4)
        chunk = list(itertools.islice(features, chunk_size))
        count += 1

Load big JSON files (2MB) in React Native

I managed to fix that myself.

The problem was comming from using the Hermes engine instead of jsc.

I don't know what caused it, but at least I can continue to work on my app.

To change back to the default, I replaced hermes by jsc in my app.json file :

// app.json
{
    "expo": {
        ...
        "jsEngine": "jsc",
        ...
    }
}

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