serializing complex number throws error if digits = NA

[t-kalinowski]

reprex:

jsonlite::toJSON(list(x = 0), digits = NA)
#> {"x":[0]}
jsonlite::toJSON(list(x = 0+0i), digits = NA)
#> Error in prettyNum(.Internal(format(x, trim, digits, nsmall, width, 3L, : invalid value -2147483648 for 'digits' argument

^{Created on 2022-08-16 by the reprex package (v2.0.1)}

Session info

sessioninfo::session_info()
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#>  date     2022-08-16
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#> ──────────────────────────────────────────────────────────────────────────────