For each await push into global variable returns undefined [duplicate]

My code below loops through a zip file called a global variable zipArray, then adds the file contents into zipFileArray. However, when I console.log(zipFileArray) it returns undefined:

        await zip.forEach(async (relativePath: any, file: any) => {
            zipArray.push(file)
        })
        console.log(zipArray)
        var zipFileArray: any[] = []
        await zipArray.forEach(async (file: any) => {
           console.log("reached")
            const file2 = await zip.file(file.name).async("string")
            zipFileArray.push(file2)
        })
        console.log("zipFileArray:" + zipFileArray)