simple.js•979 B
/* eslint no-undefined: 0 */
'use strict';
const format = require('./format');
const { MESSAGE } = require('triple-beam');
const jsonStringify = require('safe-stable-stringify');
/*
* function simple (info)
* Returns a new instance of the simple format TransformStream
* which writes a simple representation of logs.
*
* const { level, message, splat, ...rest } = info;
*
* ${level}: ${message} if rest is empty
* ${level}: ${message} ${JSON.stringify(rest)} otherwise
*/
module.exports = format(info => {
const stringifiedRest = jsonStringify(Object.assign({}, info, {
level: undefined,
message: undefined,
splat: undefined
}));
const padding = info.padding && info.padding[info.level] || '';
if (stringifiedRest !== '{}') {
info[MESSAGE] = `${info.level}:${padding} ${info.message} ${stringifiedRest}`;
} else {
info[MESSAGE] = `${info.level}:${padding} ${info.message}`;
}
return info;
});