console: add console.json() method - #65251
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Adds `console.json(...values)` which serializes each argument using `JSON.stringify` with 2-space indentation, printing to stdout. Each value is printed on a separate line. Motivation: inspecting objects via `console.log` applies `util.inspect` formatting, which adds annotations like `[Object: null prototype]` that are noise when you just want the plain data. `JSON.stringify` already handles null-prototype objects cleanly, so this is a thin wrapper that makes the common pattern `console.log(JSON.stringify(x, null, 2))` first-class. Non-serializable top-level values (undefined, functions, symbols) are silently skipped, matching the behavior of JSON.stringify returning undefined for them. Circular references throw a TypeError. Refs: whatwg/console#222 Co-Authored-By: Claude <noreply@anthropic.com>
Pass all arguments directly to JSON.stringify, matching the semantics of console.json = (...args) => console.log(JSON.stringify(...args)). No default indentation — caller controls formatting via JSON.stringify's own replacer/space arguments. Co-Authored-By: Claude <noreply@anthropic.com>
Serialize each argument independently rather than splatting all args into JSON.stringify — so console.json(a, b) prints two lines, not treating b as a replacer. Co-Authored-By: Claude <noreply@anthropic.com>
Match JSON.stringify's own signature rather than using rest args. Co-Authored-By: Claude <noreply@anthropic.com>
avivkeller
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Aug 12, 2026
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Node.js cannot land a console method not in the Console specification.
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I'm closing this PR as it does not abide by our AI Guidelines. Specifically, the "Own every line you submit" clause has been violated, as the commits have not been signed off by the author, and your agent wrote that it's contents were not human reviewed in the description. |
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Adds
console.json(value[, replacer[, space]])as a thin wrapper overJSON.stringify. Arguments pass through directly, so the caller controls formatting — no default indentation imposed.Equivalent to:
The motivation is inspecting objects without
util.inspect's annotations. The canonical case is null-prototype objects, which print as[Object: null prototype] { foo: 'bar' }viaconsole.logbut cleanly as{"foo":"bar"}viaJSON.stringify.Refs: whatwg/console#222
Draft PR: This PR was sent by Claude and may not have yet been reviewed by mark.