Javascript 如何使用已解决的Promise中的参数显示文本值

如下面发布的代码所示，我正在返回一个Promise Form a函数.我希望在Promise解析时显示一条带有参数的文本消息.换句话说，对于以下代码行:

resolve("successfully saved the data to file:",{fileName+newExt})

当promise 被解析时，我收到了前面提到的文本，但没有`fileName+newExt‘的值.

我try 了以下几种方法:

resolve("successfully saved the data to file:",{d:fileName+newExt})
resolve("successfully saved the data to file:",fileName+newExt)

但始终显示文本，而不显示值fileName+ext

update个

如下面发布的代码2部分所示，我知道如何在promise 解决时打印消息.但resolve()中的文本消息显示时不会显示值fileName+ext

code个

export function writeToFile(fileName,contents,ext='.tiff') {
let newExt = ''
return new Promise((resolve,reject)=> {
    if (typeof (fileName) !== "string") {
        reject(new Error("fileName is not a string.Did you pass string-object using new String(..)"))
    }

    if (contents == undefined) {
        reject(new Error("contents to be written to the file is undefined"))
    }

    if (typeof (ext) !== "string") {
        reject(new Error("extension is not a string.Did you pass string-object using new String(..)"))
    }

    if (ext.charAt(0) === '.') {
        newExt = ext
    } else {
        newExt = '.' + ext
    }

    if (!fs.existsSync(envVars.DEBUG_OUTPUT_PATH_FOR_TIFFS)) {
        fs.mkdirSync(path, {recursive:true})
    }
    
    fs.writeFile(envVars.DEBUG_OUTPUT_PATH_FOR_TIFFS + fileName + ext, contents,{flag:'w'},(error)=> {
        if (error) {
            reject(new Error("error occured while writing data to file.error:",error," file:",fileName+newExt))
            throw error
        }
        resolve("successfully saved the data to file:",{d:fileName+newExt})
    });
})

}

code2个

response.on('close', async()=>{
const bufferedData = Buffer.concat(data)
writeToFile("test", bufferedData,'.tiff')
.then(statusMsg => {
    console.log("write-to-file status message:", statusMsg)
    fromFile(envVars.DEBUG_OUTPUT_PATH_FOR_TIFFS + "test" + envVars.CONST_TIFF_EXT)
    .then(geoTIFF=> {
        geoTIFF.getImage()
        .then(geoTIFFImage=> {
            console.log("geoTIFFImage:",geoTIFFImage.getBoundingBox())
        })
    })
})