VirtualUrlPlugin
Allow creating virtual modules of any type, such as .ts, .json, .css, etc. default is .js.
const webpack = require("webpack");
new webpack.experiments.schemes.VirtualUrlPlugin({
myModule: 'export const msg = "from virtual module"',
});src/app.js
import { msg } from "virtual:myModule";
console.log(msg);Basic Example
Create a virtual module that generates build information
const webpack = require("webpack");
new webpack.experiments.schemes.VirtualUrlPlugin({
buildInfo: {
source() {
return `export const buildTime = ${Date.now()}`;
},
version: true,
},
});src/app.js
import { buildTime } from "virtual:buildInfo";
console.log(`App version: ${buildTime}`);Use custom schema
const webpack = require("webpack");
new webpack.experiments.schemes.VirtualUrlPlugin(
{
myModule: 'export const msg = "from virtual module"',
},
"v",
);src/app.js
import { msg } from "v:myModule";
console.log(msg);Advanced Example
Create multiple virtual modules of different types
const webpack = require("webpack");
new webpack.experiments.schemes.VirtualUrlPlugin({
myCssModule: {
type: ".css",
source: "body{background-color: powderblue;}",
},
myJsonModule: {
type: ".json",
source: '{"name": "virtual-url-plugin"}',
},
});src/app.js
import json from "virtual:myJsonModule";
import "virtual:myCssModule";Virtualize the routing file
const path = require("node:path");
const webpack = require("webpack");
const watchDir = path.join(__dirname, "./src/routes");
new webpack.experiments.schemes.VirtualUrlPlugin({
routes: {
source(loaderContext) {
// Use addContextDependency to monitor the addition or removal of subdirectories in watchDir to trigger the rebuilding of virtual modules.
loaderContext.addContextDependency(watchDir);
const files = fs.readdirSync(watchDir);
return `
export const routes = {
${files.map((key) => `${key.split(".")[0]}: () => import('./src/routes/${key}')`).join(",\n")}
}
`;
},
},
});src/app.js
import { routes } from "virtual:routes";Options
module.type(string): Content type of the virtual module.
-
module.source(string | ((loaderContext: import('webpack').LoaderContext<T>) => Promise<string> | string)): Factory function for generating the content of virtual module. -
module.version(boolean | string | () => string): When a invalidate is triggered, the source function is called again if the value of the version is different from the previous one. If set to true it will always trigger. -
schema(string): Customizable virtual module schema, default isvirtual.
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