errors.js•1.22 kB
/* eslint no-undefined: 0 */
'use strict';
const format = require('./format');
const { LEVEL, MESSAGE } = require('triple-beam');
/*
* function errors (info)
* If the `message` property of the `info` object is an instance of `Error`,
* replace the `Error` object its own `message` property.
*
* Optionally, the Error's `stack` and/or `cause` properties can also be appended to the `info` object.
*/
module.exports = format((einfo, { stack, cause }) => {
if (einfo instanceof Error) {
const info = Object.assign({}, einfo, {
level: einfo.level,
[LEVEL]: einfo[LEVEL] || einfo.level,
message: einfo.message,
[MESSAGE]: einfo[MESSAGE] || einfo.message
});
if (stack) info.stack = einfo.stack;
if (cause) info.cause = einfo.cause;
return info;
}
if (!(einfo.message instanceof Error)) return einfo;
// Assign all enumerable properties and the
// message property from the error provided.
const err = einfo.message;
Object.assign(einfo, err);
einfo.message = err.message;
einfo[MESSAGE] = err.message;
// Assign the stack and/or cause if requested.
if (stack) einfo.stack = err.stack;
if (cause) einfo.cause = err.cause;
return einfo;
});