Webpack plugin for modifying modules source.
| Webpack Version | Plugin version | Status |
|---|---|---|
| ^5.0.0 | ^4.0.0 | ✅ |
| ^4.37.0 | ^4.0.0 | ✅ |
Migration guide from version 3
npm i -D modify-source-webpack-plugin
yarn add -D modify-source-webpack-plugin
import { ModifySourcePlugin } from 'modify-source-webpack-plugin';const { ModifySourcePlugin } = require('modify-source-webpack-plugin');webpack.config.js
module.exports = {
plugins: [new ModifySourcePlugin(options)]
};Type: RegExp | ((module: webpack.NormalModule) => boolean)
Required
test is RegExp or function, which used to determinate which modules should be modified.
RegExp will be applied to full module path (based on userRequest).
function will be applied to NormalModule.
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /index\.js$/
}
]
})
];plugins: [
new ModifySourcePlugin({
rules: [
{
test: module =>
module.source().source().includes('my-secret-module-marker')
}
]
})
];Type: AbstractOperation[] (supported ConcatOperation, ReplaceOperation)
Required
List of operations which describes how modules should be modified.
import {
ModifySourcePlugin,
ConcatOperation
} from 'modify-source-webpack-plugin';
module.exports = {
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /my-file\.js$/,
operations: [
new ConcatOperation(
'start',
'// Proprietary and confidential.\n\n'
),
new ConcatOperation(
'end',
'\n\n// File is written by me, January 2022'
)
]
}
]
})
]
};import {
ModifySourcePlugin,
ReplaceOperation
} from 'modify-source-webpack-plugin';
module.exports = {
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /my-file\.js$/,
operations: [
new ReplaceOperation('once', 'searchValue', 'replaceValue'),
new ReplaceOperation('all', 'searchValue', 'replaceValue')
]
}
]
})
]
};module.exports = {
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /my-file\.js$/,
operations: [
new ConcatOperation('start', 'Haha I break your build LOL')
]
}
]
})
]
};Type: boolean
For easier debugging. Print some logs in the console.
Constants related to information about files that we change.
| Constant | Description |
|---|---|
$FILE_PATH |
Path to file |
$FILE_NAME |
File name |
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /my-file\.js$/,
operations: [
new ConcatOperation(
'end',
'\n\n // This file is on the path - $FILE_PATH and filename - $FILE_NAME'
)
]
}
]
})
];my-file.js (clickable)
console.log('Hello world!');webpack.config.js
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /my-file\.js$/,
operations: [
new ConcatOperation('start', '// Something before file contents.\n'),
new ConcatOperation('end', '\n// Something after file contents.')
]
}
]
})
];Result my-file.js (clickable)
// Something before file contents.
console.log('Hello world!');
// Something after file contents.my-component.jsx (clickable)
function HelloMessage(props) {
return (
<div>
Hello, $NAME
<button
onClick={() => {
props.userLogout();
alert('Goodbye, $NAME!');
}}
>
$EXIT_LABEL
</button>
</div>
);
}webpack.config.js
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /my-component\.jsx$/,
operations: [
new ReplaceOperation('all', '$NAME', 'Artem Batura'),
new ReplaceOperation('once', '$EXIT_LABEL', 'Exit')
// new ReplaceOperation('once', '$EXIT_LABEL', 'Leave')
]
}
]
})
];Result my-component.jsx (clickable)
function HelloMessage(props) {
return (
<div>
Hello, Artem Batura
<button
onClick={() => {
props.userLogout();
alert('Goodbye, Artem Batura!');
}}
>
Exit
</button>
</div>
);
}my-component.jsx (clickable)
function HelloMessage(props) {
$MY_DEBUG_CODE;
return (
<div>
Hello, user! $MY_USER_COMPONENT
<button onClick={() => props.userLogout()}>Exit</button>
</div>
);
}webpack.config.js
plugins: [
new ModifySourcePlugin({
rules: [
{
test: /my-component\.js$/,
operations: [
new ReplaceOperation(
'once',
'$MY_DEBUG_CODE',
'console.log("props", props)'
),
new ReplaceOperation(
'once',
'$MY_USER_COMPONENT',
'<div>compilation-time markup</div>'
)
]
}
]
})
];Result my-component.jsx (clickable)
function HelloMessage(props) {
console.log('props', props);
return (
<div>
Hello, user!
<div>compilation-time markup</div>
<button onClick={() => props.userLogout()}>Exit</button>
</div>
);
}
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