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69 lines
1.4 KiB
69 lines
1.4 KiB
'use strict'
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module.exports = errSerializer
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const { toString } = Object.prototype
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const seen = Symbol('circular-ref-tag')
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const rawSymbol = Symbol('pino-raw-err-ref')
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const pinoErrProto = Object.create({}, {
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type: {
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enumerable: true,
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writable: true,
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value: undefined
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},
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message: {
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enumerable: true,
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writable: true,
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value: undefined
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},
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stack: {
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enumerable: true,
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writable: true,
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value: undefined
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},
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raw: {
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enumerable: false,
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get: function () {
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return this[rawSymbol]
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},
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set: function (val) {
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this[rawSymbol] = val
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}
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}
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})
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Object.defineProperty(pinoErrProto, rawSymbol, {
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writable: true,
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value: {}
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})
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function errSerializer (err) {
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if (!(err instanceof Error)) {
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return err
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}
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err[seen] = undefined // tag to prevent re-looking at this
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const _err = Object.create(pinoErrProto)
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_err.type = toString.call(err.constructor) === '[object Function]'
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? err.constructor.name
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: err.name
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_err.message = err.message
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_err.stack = err.stack
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for (const key in err) {
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if (_err[key] === undefined) {
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const val = err[key]
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if (val instanceof Error) {
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/* eslint-disable no-prototype-builtins */
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if (!val.hasOwnProperty(seen)) {
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_err[key] = errSerializer(val)
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}
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} else {
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_err[key] = val
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}
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}
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}
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delete err[seen] // clean up tag in case err is serialized again later
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_err.raw = err
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return _err
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}
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