JS module for a photo manager

photo_manager.js

const PhotoUpload = { 
    input: null, 
    files: [],
    uploadLimit: 6, 
    hasLimit(event){
        const { files: FileList } = event.target 
        if ((FileList.length > PhotoUpload.uploadLimit) || ((FileList.length + PhotoUpload.files.length) > PhotoUpload.uploadLimit)) { 
            event.preventDefault()
            alert(`Você só pode realizar o upload de até ${PhotoUpload.uploadLimit} fotos`)
            return true
        }

        return false
    }, 
    handleFileInput(event){
        PhotoUpload.input = event.target 
        const { files: FileList } = PhotoUpload.input 

        if (PhotoUpload.hasLimit(event)) return true
        
        if (PhotoUpload.files.length === 0) { 
            PhotoUpload.addLabel("Fotos do seu anúncio")
        }

        Array.from(FileList).forEach(file => {
            const reader = new FileReader()
            PhotoUpload.files.push(file)

            reader.onload = () => { 
                const image = new Image()
                image.src = reader.result

                const photoContainer = PhotoUpload.getContainer()
                const previewContainer = PhotoUpload.getPreviewContainer()
                photoContainer.appendChild(image)
                previewContainer.appendChild(photoContainer)
            }

            reader.readAsDataURL(file)
        })

        event.target.files = PhotoUpload.getAllFiles()
        console.log(event.target.files.length)
    },
    getContainer(){
        const container = document.createElement('div')
        container.appendChild(PhotoUpload.getRemoveButton())
        container.classList.add('photo')

        return container; 
    },
    getPreviewContainer(){
        const preview = document.querySelector('.js-photos-preview')
        return preview
    },
    getRemoveButton(){
        const button = document.createElement('i')
        button.classList.add('material-icons')
        button.classList.add('remove-button')
        button.innerHTML = 'clear'
        button.onclick = PhotoUpload.removePhoto
        return button;
    },
    getAllFiles() { 
        const dataTransfer = new ClipboardEvent("").clipboardData || new DataTransfer()

        PhotoUpload.files.forEach(file => dataTransfer.items.add(file))

        return dataTransfer.files
    },
    removePhoto(event){
        const previewPhotos = Array.from(PhotoUpload.getPreviewContainer().children)
        const photoContainer = event.target.parentNode
        const photoIndex = previewPhotos.indexOf(photoContainer)

        PhotoUpload.files.splice(photoIndex, 1)
        PhotoUpload.input.files = PhotoUpload.getAllFiles()

        photoContainer.remove()
    },
    addLabel(labelText){
        const previewWrapper = document.querySelector('.js-photos-preview-wrapper')
        const label = document.createElement('label')
        label.innerHTML = labelText
        previewWrapper.appendChild(label)
    }
}