Create-React-App create chrome extension issue.

zydjohnHotmail
2023-03-06T20:03:59Z

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### Describe the bug
The generated manifest.json by Create-React-App can NOT be used to create chrome extension.
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No!
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### Environment
OS: Windows 10 (Version 21H2)
Node.js: version 18.14.2
Chrome: Version 110.0.5481.178 (Official Build) (64-bit)
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### Steps to reproduce
0) Installed node.js version 18.14.2
1) npx create-react-app chrome-react-extension --template typescript
2) npm run build

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### Expected behavior
I should be able to load browser extension from Chrome, but it did NOT work
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### Actual behavior
Error message:
ErrorMissing 'manifest_version' key. Its value must be an integer either 2 or 3. See developer.chrome.com/extensions/manifestVersion for details.

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Hello:
The above instructions are good, but not enough to report the bug, so I wrote my own report here:
I found Create-React-App library, it seems to be a good tools to make Chrome extension, but I see a few issues when trying to use it to create a simple Chrome extension.

The steps:
0) Installed node.js version 18.14.2
1) npx create-react-app chrome-react-extension --template typescript
2) npm run build
3) Show manifest.json file:
D:\TypeScripts\chrome-react-extension>type public\manifest.json
{
"short_name": "React App",
"name": "Create React App Sample",
"icons": [
{
"src": "favicon.ico",
"sizes": "64x64 32x32 24x24 16x16",
"type": "image/x-icon"
},
{
"src": "logo192.png",
"type": "image/png",
"sizes": "192x192"
},
{
"src": "logo512.png",
"type": "image/png",
"sizes": "512x512"
}
],
"start_url": ".",
"display": "standalone",
"theme_color": "#000000",
"background_color": "#ffffff"
}
4) From Chrome browser: chrome://extensions/
Try to load unpacked, got the following errors:

ErrorMissing 'manifest_version' key. Its value must be an integer either 2 or 3. See developer.chrome.com/extensions/manifestVersion for details.
Could not load manifest.

5) Change manifest.json file, so it looks like this:
D:\TypeScripts\chrome-react-extension\public>type manifest.json
{
"short_name": "React App",
"name": "Create React App Sample",
"manifest_version": 3,
"version": "1.0",
"icons": {
"16": "favicon.ico",
"48": "logo192.png",
"128": "logo512.png"
}
}
D:\TypeScripts\chrome-react-extension\public>

Then, I can load unpacked in Chrome browser, but I can’t see any icon for the extension.
I am using Chrome version: Version 110.0.5481.178 (Official Build) (64-bit)
As indicated by Chrome browser, all manifest version 2.0 will not work in year 2023, so have to use manifest version 3.0; but the default manifest generated by Create-React-App seems out of date.
Please check and make some changes, so users can use the repo longer.
By the way, when I run the command:
npx create-react-app chrome-react-extension --template typescript
I saw there were warnings:
6 high severity vulnerabilities
It is better to check and update dependent packages to erase the above warnings.
Thanks,