1815226 - The Json parsed view incorrectly displays large numbers

Status: RESOLVED DUPLICATE of bug 1431808

(DevTools :: JSON Viewer, defect, P2)

Description

[David-Pannen]

Attachment: firefox_bug.json

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Steps to reproduce:

Open the example JSON in Firefox and switch to JSON view.

Actual results:

Wrong numbers are displayed:
id1: 117410890614504780
id2: 117410890644643820

Expected results:

The correct numbers from the raw json are displayed:
id1: 117410890614504777
id2: 117410890644643827

Comment 1

[David-Pannen]

Attachment: Defective_View.png

Comment 2

[David-Pannen]

Attachment: Correct_Raw_Data_View.png

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'DevTools::General' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 4

[Julian Descottes [:jdescottes]]

We use JSON.parse to get a representation for the json, and this will turn big integers into approximate values.
Note that you would get the same when using JSON.parse with such data, but maybe other languages handle this just fine.

We should check if using big numbers in JSON still is considered as valid JSON or if we should default to raw data for this. Otherwise we can try to find another way of parsing such JSON.

Comment 5

[Nicolas Chevobbe [:nchevobbe]]

There's a proposal to expose the raw text to a JSON.parse function so we could transform those numbers into BigInt (See Bug 1658310)