我昨晚做了这个工作，并创建了一个带有实现上述代码的分支。 如果您希望我为此在 Logform 中创建 PR，请告诉我。

这是我使用的测试文件...

'use strict';

const winston = require('winston');
const logform = require('logform')
const {SPLAT} = require('triple-beam');


const {createLogger, format, transports} = require('winston');
var logger = createLogger({
    format: format.combine(

        format.splat()
        , format.captureAllMeta()
        ,
        logform.format.printf(info => {

            // return `${info.timestamp} [${info.label}] ${info.level}: ${info.message}`;
            if ((!info.meta.length)) {
                return (`${info.level}: ${info.message}`);

            }
            else {
                return (`${info.level}: ${info.message}\n\t${JSON.stringify(info.meta)}`);

            }
        })
    ),
    transports: [new transports.Console()]
});


let count = 1

logger.log('info', count + '. this is a string I want to splat %s', 'together', {an: 'object'})
count += 1
console.log('---')

logger.log('info', count + '.this is a string followed by an object and an array', {an: 'object'}, ['an', 'array'])
count += 1
console.log('---')

logger.log('info', count + '.this is a string followed by an object and an array', ['an', 'array'], {an: 'object'})
count += 1
console.log('---')


logger.log('info', count + '. string followed by', 'a string')
console.log('---')
count += 1

logger.log('info', count + '. string followed by 2', 'separate', 'strings')
console.log('---')
count += 1

logger.log('info', count + '. string followed by', {an: 'object'})
console.log('---')
count += 1

logger.log('info', count + '. string followed by 2', {an: 'object'}, ['an', 'array'])
console.log('---')
count += 1

logger.log('info', count + '. string with token followed by string %s', 'string')
console.log('---')
count += 1

logger.log('info', count + '. string with token followed by obj %j', {idunno: 'notsure'})
console.log('---')
count += 1

logger.log('info', count + '. string with token followed by string %s and then objects', 'or here', {an: 'object'}, ['i', 'am', 'missed'])
console.log('---')
count += 1

logger.log('info', count + '. string with two tokens %s %s followed by one ', 'string')
console.log('---')
count += 1

logger.log('info', count + '. string with two tokens %s %j followed by one string and one object', 'string', {an: 'object'}, [1,2,3])
count += 1
console.log('---')


logger.info({message: 'just an object', [SPLAT]: {more:'stuff'}})
count += 1
console.log('---')

logger.info(['an','array'])
count += 1
console.log('---')

logger.info(['an','array',{with:'object'}])
count += 1
console.log('---')


logger.log({
    level: 'info',
    message: '%d: The answer to life, the universe and everything',
    splat: [42]
})
count += 1
console.log('---')

logger.log({
    level: 'info',
    message: '%d: The answer to life, the universe and everything',
    splat: [43],
    [Symbol.for('splat')]: [44]
})
count += 1
console.log('---')

logger.log({
    level: 'info',
    message: '%d: The answer to life, the universe and everything'
})
count += 1
console.log('---')

具有以下输出...

info: 1. this is a string I want to splat together
    [{"an":"object"}]
---
info: 2.this is a string followed by an object and an array
    [{"an":"object"},["an","array"]]
---
info: 3.this is a string followed by an object and an array
    [["an","array"],{"an":"object"}]
---
info: 4. string followed by
    ["a string"]
---
info: 5. string followed by 2
    ["separate","strings"]
---
info: 6. string followed by
    [{"an":"object"}]
---
info: 7. string followed by 2
    [{"an":"object"},["an","array"]]
---
info: 8. string with token followed by string string
---
info: 9. string with token followed by obj {"idunno":"notsure"}
---
info: 10. string with token followed by string or here and then objects
    [{"an":"object"},["i","am","missed"]]
---
info: 11. string with two tokens string %s followed by one
---
info: 12. string with two tokens string {"an":"object"} followed by one string and one object
    [[1,2,3]]
---
info: just an object
    [{"more":"stuff"}]
---
info: an,array
---
info: an,array,[object Object]  // expected... no %j token
---
info: 42: The answer to life, the universe and everything
---
info: 44: The answer to life, the universe and everything
---
info: %d: The answer to life, the universe and everything
---

除了 info[SPLAT] 之外，还为我的 info.splat 代码添加了支持。

需要这样的东西。 基本上，如果您不能在不触及现有日志语句的情况下升级到 v3，并且能够在插值后将元数据作为单独的对象获取，那么对于大多数现有用户来说，v3 是不适合的。 我不知道为什么有人认为将关卡、消息和元数据混合到一个大对象中是个好主意。 冲突的时机已经成熟。 info[Symbol.for('splat)] 也不可靠，因为它将插值值和元数据混合在一起。 我们想要元分离。

所以我刚刚意识到使用 format.splat() 确实会在信息中添加一个元对象，但前提是你还使用了插值。 如果您不使用插值，则元数据只是混合到 info 对象中。

此外，当使用插值和元时，format.simple() 将元输出为 {meta:{METAOBJ}} 而不是像 v2 那样仅 {METAOBJ}。