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Chris Tate
619c857fcd
Node lists an object's own properties in creation order. An Error's own
`name` is created by an assignment after construction defines `message`
and `cause`, or during construction by a `name` field or a constructor's
`this.name = ...`. Errors listed an own `name` before `message`, and
instances of Error subclasses listed it before every field, so
Object.keys, Object.getOwnPropertyNames and JSON.stringify answered a
different order than Node's: `{"name":"E","extra":1}` for `{"extra":1,
"name":"E"}`.
An error's own-property view now lists `name` after the properties its
construction defines. For an Error subclass, the class records which
field `name` follows: a `name` field takes its place among the fields,
parameter properties first, and `this.name = ...` in a constructor follows
the fields created before it, including the ones that constructor assigns
in JavaScript sources. When no class of the chain sets `name` during
construction, an own `name` follows every other own property.