无法使用 create-react-app 导入图像

Question

I'm using create-react-app , and I am struggling to load images. I am following the instructions as specified here , but I keep seeing the following error:

Failed to compile.

Error in ./src/components/Home/imageIndex.ts
(1,24): error TS2307: Cannot find module './party.png'

Does anyone know why when I run yarn start my app continues to fail to compile?

I have a Home component and this is how I am importing the file:

import photo from './party.png';

The component is located in src/components/Home/index.tsx and the png file is located in src/components/Home/party.png .

here is my package.json:

{
  "name": "eai-reactjs-typescript-redux-starter",
  "description": "A ReactJS/TypeScript + Redux starter template with a detailed README describing how to use these technologies together and constructive code comments.",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^15.6.1",
    "react-dom": "^15.6.1",
    "react-redux": "^5.0.5",
    "redux": "^3.7.0",
    "redux-logger": "^3.0.6"
  },
  "devDependencies": {
    "@types/enzyme": "^2.8.0",
    "@types/jest": "^19.2.3",
    "@types/node": "^7.0.18",
    "@types/react": "^15.0.24",
    "@types/react-dom": "^15.5.0",
    "@types/react-redux": "^4.4.40",
    "@types/redux-logger": "^3.0.0",
    "enzyme": "^2.8.2",
    "react-addons-test-utils": "^15.5.1",
    "react-scripts-ts": "1.4.0",
    "redux-devtools-extension": "^2.13.2"
  },
  "scripts": {
    "start": "react-scripts-ts start",
    "build": "react-scripts-ts build",
    "test": "react-scripts-ts test --env=jsdom",
    "eject": "react-scripts-ts eject"
  }
}

Answer 1

Are you sure you've got the correct path? Also when you import an image via css (as is done in the example you mentioned) you need to give a path relative to the public folder and not the src folder. I have run into this problem several times.

An example using import:

import Image from './img.png'
...
// react example
...
render() {
    return (
        <img src={Image}/> // notice the curly
...

and not

<img src="Image"/>

Answer 2

I had the same problem and was able to solve with a require statement.

const photo = require('./party.png');

and then in your component use that like:

render() {
    return (
        <img src={photo}/>

also see this post Displaying a static image using React, Typescript and Webpack

Answer 3

As @archae0pteryx proposed it is much better to separate pictures from the code, so the project public folder should be used instead of src .

Here is how it works with css :

1. copy 'img.bmp' into /public
2. inside .css file/class: background-image: url('/img.bmp');

Answer 4

You can simply use something like this:

render() {
  // Note: this is an escape hatch and should be used sparingly!
  // Normally we recommend using `import` for getting asset URLs
  // as described in “Adding Images and Fonts” above this section.
  return <img src={process.env.PUBLIC_URL + '/img/logo.png'} />;
}

Quoted directly from CRA docs

Answer 5

By default, Create-React-App uses url-loader for files with size 10000 bytes

that works fine in the development environment, but in production reduce error.

For a production environment, you should change the value for the limit of bytes in order to enforce webpack use file-loader instead.

If you have to eject your app modify webpack.config.prod.js file and change the limit of url-loader to 10 and will work as well

{
 test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
 loader: require.resolve('url-loader'),
 options: {
 limit: 10,
 name: 'static/media/[name].[hash:8].[ext]',
},