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https://github.com/jsmnbom/webextension-manifest-loader
Webpack loader that loads browser tailored manifest.json. It also imports all importable properties, allowing you to have 'manifest.json' as your only webpack entry point.
https://github.com/jsmnbom/webextension-manifest-loader
Last synced: 26 days ago
JSON representation
Webpack loader that loads browser tailored manifest.json. It also imports all importable properties, allowing you to have 'manifest.json' as your only webpack entry point.
- Host: GitHub
- URL: https://github.com/jsmnbom/webextension-manifest-loader
- Owner: jsmnbom
- License: mit
- Archived: true
- Created: 2020-06-21T12:09:48.000Z (over 4 years ago)
- Default Branch: main
- Last Pushed: 2021-06-11T21:58:16.000Z (over 3 years ago)
- Last Synced: 2024-10-07T15:37:56.033Z (2 months ago)
- Language: TypeScript
- Homepage:
- Size: 76.2 KB
- Stars: 7
- Watchers: 2
- Forks: 0
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- Awesome-WebExtensions - webextension-manifest-loader - Webpack loader that loads browser tailored manifest.json. It also imports all importable properties, allowing you to have 'manifest.json' as your only webpack entry point. (Tools)
README
# webextension-manifest-loader
[](https://www.npmjs.com/package/webextension-manifest-loader)
[](https://www.npmjs.com/package/webextension-manifest-loader)
[](https://github.com/prettier/prettier)
Webpack loader that loads browser tailored manifest.json. It also imports all importable properties, allowing you to have 'manifest.json' as your only webpack entry point.
**Use it together with [inert-entry-webpack-plugin][inert], [spawn-loader][spawn], and maybe [html-loader][html], more info below.**
## Table of Contents
- [Getting Started](#getting-started)
- [webpack.config.js](#webpackconfigjs)
- [Options](#options)
- [Example](#example)
- [Configuration](#configuration)
- [webpack.config.js (configuration)](#webpackconfigjs-configuration)
- [manifest.json (configuration)](#manifestjson-configuration)
- [Output if targetVendor == 'chrome'](#output-if-targetvendor--chrome)
- [manifest.json (output)](#manifestjson-output)
- [FAQ](#faq)
- [Which properties does it currently support?](#which-properties-does-it-currently-support)
- [Are there any known limitation or problems?](#are-there-any-known-limitation-or-problems)
- [Related and thanks](#related-and-thanks)
## Getting Started
To begin, you'll need to install webextension-manifest-loader:
```
npm install --save-dev webextension-manifest-loader
```
Then add the loader to your webpack config. For example:
### webpack.config.js
```javascript
module.exports = {
module: {
rules: [
{
// Prevent json-loader from loading the file
type: 'javascript/auto',
test: /manifest\.json$/,
use: [
// webextension-manifest-loader returns a function for importing in a .js file,
// convert it to a plain string and resolve imports using extract-loader
'extract-loader',
{
loader: 'webextension-manifest-loader',
options: {
// Use the environment variable TARGET_VENDOR as the target vendor
targetVendor: process.env.TARGET_VENDOR,
// Merge some properties into the finished manifest.json
merge: {
// This could easily come from an import of your package.json
version: '1.3.0',
},
},
},
],
},
],
},
};
```
## Options
| Name | Type | Default | Description |
| :----------------: | :------: | :---------: | :---------------------------------------------------------------------------- |
| **`targetVendor`** | `string` | `undefined` | Specify the target vendor, should be one of `firefox`,`chrome`,`edge`,`opera` |
| **`merge`** | `Object` | `{}` | Allows merging properties into the finished manifest.json |
## Example
See [jsmnbom/ao3-enhancements](https://github.com/jsmnbom/ao3-enhancements) ([manifest.json](https://github.com/jsmnbom/ao3-enhancements/blob/main/src/manifest.json), [webpack.config.ts](https://github.com/jsmnbom/ao3-enhancements/blob/main/webpack.config.ts)) for a fully featured example of using this loader together with typescript, vue (+vuetify) and pug.
### Configuration
**Make sure you're using [inert-entry-webpack-plugin][inert], otherwise webpack will try to output manifest.json as a javascript file, and that will obviously fail!**
#### webpack.config.js (configuration)
```javascript
module.exports = {
entry: {
manifest: './manifest.json',
},
module: {
rules: [
{
// Prevent json-loader from loading the file
type: 'javascript/auto',
test: /manifest\.json$/,
use: [
// webextension-manifest-loader returns a function for importing in a .js file,
// convert it to a plain string and resolve imports using extract-loader
'extract-loader',
{
loader: 'webextension-manifest-loader',
options: {
// Use the environment variable TARGET_VENDOR as the target vendor
targetVendor: process.env.TARGET_VENDOR,
// Merge some properties into the finished manifest.json
merge: {
// This could easily come from an import of your package.json
version: '1.3.0',
},
},
},
],
},
{
test: /\.html$/,
use: [
'file-loader?name=[path][name].html',
'extract-loader',
'html-loader',
],
},
],
},
plugins: [new InertEntryPlugin()],
};
```
#### manifest.json (configuration)
Now you'll be able to specify vendors in your manifest.json keys and to import files.
```jsonc
{
"manifest_version": 2,
"version": "",
"__firefox_icons__": {
"48": "./icon.svg",
"96": "./icon.svg"
},
"__chrome_icons__": {
"48": "./icon-48.png",
"96": "./icon-96.png"
},
"options_ui": {
"page": "~spawn-loader?name=options_ui/index.html!./options_ui/index.html",
"__firefox_browser_style__": false,
"__chrome_chrome_style__": false
},
"content_scripts": [
{
"matches": [...],
"__firefox_js__": [
"~spawn-loader?name=content_script/index.js!./content_script/index.js"
],
"__chrome_js__": [
"~file-loader?name=[name].[ext]!webextension-polyfill/dist/browser-polyfill.min.js",
"~spawn-loader?name=content_script/index.js!./content_script/index.js"
],
"css": ["./content_script/style.css"]
}
]
}
```
Here we import `.svg` if compiling for firefox, but `.png`s if compiling for chrome since chrome doesn't support svgs in the icons property. We also add the [webextension-polyfill](https://github.com/mozilla/webextension-polyfill) on chrome but not on firefox as it's not needed there.
Use a loader like [spawn-loader][spawn] to add a new entry point. Remember to add a tilde in front of the loader or it will be resolved as a relative path.
### Output if targetVendor == 'chrome'
Here's the output of the above configuration when run through webpack.
And because we are using [html-loader][html] which can also resolve imports in `` tags, again using [spawn-loader][spawn] we could include javascript files in our `options_ui/index.html`.
### manifest.json (output)
```jsonc
{
"manifest_version": 2,
"version": "0.3.0",
"icons": {
"48": "/icon-48.png",
"96": "/icon-96.png"
},
"options_ui": {
"page": "/options_ui/index.html",
"chrome_style": false,
"open_in_tab": true
},
"content_scripts": [
{
"matches": [...],
"js": [
"/browser-polyfill.min.js",
"/content_script/index.js"
],
"css": [
"/content_script/style.css"
],
"run_at": "document_start"
}
],
}
```
## FAQ
### Which properties does it currently support?
All properties can use the target vendor feature, but only some properties will be resolved by webpack. These are currently: (if you need more please open an issue or PR)
Please see the [src/interfaces.ts -> Manifest](https://github.com/jsmnbom/webextension-manifest-loader/blob/main/src/interfaces.ts#L5) interface for these currently supported properties.
### Are there any known limitation or problems?
- Does not resolve imports in localizable property values (ones starting with \_\_MSG\_).
- Does not work with webpack's \[hash\], this should be okay as it's not really needed for webextensions.
- Webpack doesn't display progress for child compilers (like spawn-loader) correctly.
## Related and thanks
I wrote this loader mostly as a challange to myself to see if it could be done. It is heavily inspired by [wext-manifest-loader](https://github.com/abhijithvijayan/wext-manifest-loader), and uses parts from [html-loader][html] for the import mechanism.
[spawn]: https://github.com/erikdesjardins/spawn-loader
[inert]: https://github.com/erikdesjardins/inert-entry-webpack-plugin
[html]: https://github.com/webpack-contrib/html-loader