formatLogLine wrote the fields of a log call with JSON.stringify. A
circular reference threw, so Strapi's error middleware lost the error
it was logging: the axios error of a failed PayPal token request holds
its request object, which refers to itself. An Error was written as {},
and the config.headers of an axios error carried "Authorization: Basic"
with the base64 of the PayPal client id and secret into the line.
The fields are now copied before they are written:
- a field named like a credential (authorization, cookie, password,
secret, token, api key) is written as "[redacted]", at any depth;
- an Error is written as { name, message }, with the first line of the
message as describeError has it, and its stack only with the stack
option;
- an object that contains itself is written once, the reference to it
as "[Circular]";
- an instance of a class is written as its toJSON(), or as its class
name without one: a request object keeps its headers in _header;
- a bigint is written as its digits, an unreadable field as
"[unreadable]".
The three todo tests of the formatter pass and are regular tests now.
Refs libretech/mp#71
Refs libretech/mp#67
libretech
ab071cd222