This plugin sets the webpack public path at runtime.
npm install @rushstack/set-webpack-public-path-pluginnpm install @rushstack/set-webpack-public-path-plugin --save-dev
document.currentScript APIThis plugin wraps the entire webpack bundle in an immediately executed function expression (IIFE) that sets a variable
to the value of document.currentScript and then injects code that extracts the current script's base path from
the src attribute when setting the __webpack_public_path__ variable.
This is similar to the output.publicPath = 'auto' option, but differs in two important ways:
1. It does not contain any fallback logic to look at elements
2. It stores the document.currentScript value immediately when the bundle is executed, not when
the runtime is executed. This is important when the bundle's factory function is called by another script, like
when an AMD output target is produced.
To use the plugin, add it to the plugins array of your Webpack config. For example:
``JavaScript
import { SetPublicPathCurrentScriptPlugin } from '@rushstack/set-webpack-public-path-plugin';
{
plugins: [
new SetPublicPathCurrentScriptPlugin()
]
}
`
This plugin has no options.
This simple plugin uses a specified regular expression or the emitted asset name to set the __webpack_public_path__
variable. This is useful for scenarios where the Webpack automatic public path detection does not work. For example,
when emitting AMD-style assets that are initialized by a callback.
To use the plugin, add it to the plugins array of your Webpack config. For example:
`JavaScript
import { SetPublicPathPlugin } from '@rushstack/set-webpack-public-path-plugin';
{
plugins: [
new SetPublicPathPlugin( / webpackPublicPathOptions / )
]
}
`
#### scriptName = { }
This parameter is an object that takes three properties: a string property name, a boolean property isTokenized,useAssetName
and a boolean property
The name property is a regular expression string that is applied to all script URLs on the page. The last directoryname
of the URL that matches the regular expression is used as the public path. For example, if the propertymy\-bundle_?[a-zA-Z0-9-_]*\.js
is set to and a script's URL is https://mycdn.net/files/build_id/assets/my-bundle_10fae182eb.js,https://mycdn.net/files/build_id/assets/
the public path will be set to .
If the isTokenized parameter is set to true, the regular expression string in name is treated as a tokenized[name]
string. The supported tokens are and [hash]. Instances of the [name] substring are replaced with the[hash]
chunk's name, and instances of the substring are replaced with the chunk's rendered hash. The namename
is regular expression-escaped. For example, if the property is set to [name]_?[a-zA-Z0-9-_]*\.js,isTokenized is set to true, and the chunk's name is my-bundle, and a script's URL ishttps://mycdn.net/files/build_id/assets/my-bundle_10fae182eb.js, the public path will be set tohttps://mycdn.net/files/build_id/assets/.
If the useAssetName property is set, the plugin will use the Webpack-produced asset name as it would the name
property. is exclusive to name and isTokenized.
This option is exclusive to other options. If it is set, systemJs, publicPath, and urlPrefix will be ignored.
##### regexVariable = '...'
Check for a variable with name ... on the page and use its value as a regular expression against script paths tofoo
the bundle's script. If a value is passed into regexVariable, the produced bundle will look for a variablefoo
called during initialization, and if a foo variable is found, use its value as a regular expression to
detect the bundle's script.
For example, if the regexVariable option is set to scriptRegex and scriptName is set to { name: 'myscript' },
consider two cases:
###### Case 1
`HTML
...
`
In this case, because there is a scriptRegex variable defined on the page, the bundle will use its value/thescript/i
() to find the script.
###### Case 2
`HTML
...
`
In this case, because there is not a scriptRegex variable defined on the page, the bundle will use the valuescriptName
passed into the option to find the script.
##### getPostProcessScript = (variableName) => { ... }
A function that returns a snippet of code that manipulates the variable with the name that's specified in the
parameter. If this parameter isn't provided, no post-processing code is included. The variable must be modified
in-place - the processed value should not be returned. This is useful when non-entry assets are deployed to
a parent directory or subdirectory of the directory to which the entry assets are deployed.
For example, if this parameter is set to this function
`JavaScript${variableName} = ${variableName} + 'assets/';
getPostProcessScript = (variableName) => {
return ;`
};
the public path variable will have /assets/ appended to the found path.
Note that the existing value of the variable already ends in a slash (/).
##### preferLastFoundScript = false`
If true, find the last script matching the regexVariable (if it is set). If false, find the first matching script.
This can be useful if there are multiple scripts loaded in the DOM that match the regexVariable.