属性“src”的类型在 nextjs/image 中不兼容

Question

我正在使用 react dropzone 在我的简单应用程序中上传多图像。为了显示哪种类型的图像被删除，我使用 TypeScript 制作了一个单独的组件。但是 Next.js 图像 src 显示错误，如类型：

'{ src: string; alt: string; }' is not assignable to type 'IntrinsicAttributes & ImageProps'.
  Type '{ src: string; alt: string; }' is not assignable to type 'ObjectImageProps'.
    Types of property 'src' are incompatible.
      Type 'string' is not assignable to type 'StaticImport'.

渲染文件.ts：

'{ src: string; alt: string; }' is not assignable to type 'IntrinsicAttributes & ImageProps'.
  Type '{ src: string; alt: string; }' is not assignable to type 'ObjectImageProps'.
    Types of property 'src' are incompatible.
      Type 'string' is not assignable to type 'StaticImport'.

类型.ts：

import { IFile } from "../../libs/types";
import { sizeInMb } from "../../libs/sizeInMb";
import { FunctionComponent } from "react";
import Image from "next/image"

const RenderFile: FunctionComponent<{
  file: IFile;
}> = ({ file: { formate, sizeInBytes, name } }) => {
  return (
    <div>
      <Image src={`/images/${formate}.png`} alt="image"/>
      <span>{name}</span>
      <span>{sizeInMb(sizeInBytes)}</span>
    </div>
  );
};

export default RenderFile;

我在 src props 中的错误是什么？

Answer 1

问题是next/image'sImage期望相当复杂的类型，ImageProps因为它是道具：

type StringImageProps = {
  src: string
} & (
  | { width?: never; height?: never; layout: 'fill' }
  | {
      width: number | string
      height: number | string
      layout?: Exclude<LayoutValue, 'fill'>
    }
) &
  (
    | {
        placeholder?: Exclude<PlaceholderValue, 'blur'>
        blurDataURL?: never
      }
    | { placeholder: 'blur'; blurDataURL: string }
  )

type ObjectImageProps = {
  src: StaticImport
  width?: number | string
  height?: number | string
  layout?: LayoutValue
  placeholder?: PlaceholderValue
  blurDataURL?: never
}

export type ImageProps = Omit<
  JSX.IntrinsicElements['img'],
  'src' | 'srcSet' | 'ref' | 'width' | 'height' | 'loading' | 'style'
> & {
  loader?: ImageLoader
  quality?: number | string
  priority?: boolean
  loading?: LoadingValue
  unoptimized?: boolean
  objectFit?: ImgElementStyle['objectFit']
  objectPosition?: ImgElementStyle['objectPosition']
} & (StringImageProps | ObjectImageProps)

由于您不是从本地导入导入图像，因此您剩下的唯一结构是StringImageProps. 要符合它，您必须提供以下道具集之一：

<Image src={string} layout="fill" />
// or
<Image src={string} width={number} height={number} /> // with optional `layout` prop but not of type 'fill'

两种变体都可以使用 optional placeholder（不是“blur”类型）或必需placeholder: 'blur' 和 进行扩展blurDataURL: string。

只有在此之后，您才能将 nativeimage的属性提供为alt.

Answer 2

导入类型ImageLoaderProps为我解决了这个问题。

例子：

import Image from 'next/image';
import type { ImageLoaderProps } from 'next/image';

const myLoader = ({ src, width, quality }: ImageLoaderProps) => {
  return `https://example.com/?${src}?w=${width}&q=${quality}`;
};

export default function TestComponent(props: Record<string, string>) {
  const { imageResource } = props;
  return (
        <Image
          loader={myLoader}
          src={`/${imageResource}`}
          width="20%"
          height="20%"
        />
  );
}