Add support for BigInt values
Categories
(DevTools :: Debugger, enhancement, P2)
Tracking
(Not tracked)
People
(Reporter: wingo, Unassigned)
References
Details
Arbitrary-precision integers (BigInt values) are close to shipping in SpiderMonkey. We should verify that the debugger supports them adequately.
BigInt values are a new kind of primitive. I am not really sure what a debugger would want to do with them specifically other than showing them textually using their literal syntax (e.g. 1n), possibly in a number of different bases (e.g. contextual menu to show as 0x1n or 0b1n).
See also bug 1527867.
Specification here: https://tc39.github.io/proposal-bigint/
They are implemented in Chrome so checking what the Chrome debugger does might be a useful thing to do.
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Comment 1•6 years ago
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Hey :wingo, I believe we will have support for showing BigInt in the scopes panel and console fairly soon.
What issues are you seeing?
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Updated•6 years ago
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Comment 2•6 years ago
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Jason, this still need platform support.
I have a working patch but wanted to have a server test (which is challenging because we need to set the pref at the right moment so it's picked up in the test harness).
I might go with the patch and a frontend test, and file a bug for a server one.
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Comment 3•6 years ago
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By the way Andy, is there a bug we can follow that will enable big int in Nightly ?
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Reporter | |
Comment 4•6 years ago
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For BigInt in nightly: https://bugzilla.mozilla.org/show_bug.cgi?id=1531293 (should land shortly)
For shipping BigInt (might slip to ff68): https://bugzilla.mozilla.org/show_bug.cgi?id=1527902
I don't have any specific feedback regarding bigint in devtools, the bug is mostly to verify that things work and that they print correctly and aren't confused with "normal" numbers :)
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Reporter | |
Comment 5•6 years ago
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I am not sure if you need to do anything about it, but there will be a new global as well (BigInt). I see that tern/ecma5.js has explicit support for e.g. Boolean; might need extending to support BigInt.
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Comment 6•6 years ago
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I think we can close it as dupe of Bug 1527867, where we setup the server support (client support landed in reps a while ago)
Description
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