extension-develop/dist/webpack/plugin-extension/index.d.ts

The develop step of Extension.js

import { Compiler } from '@rspack/core';
import { PluginInterface } from '../webpack-types';
import { DevOptions } from '../../develop-lib/config-types';
export declare class ExtensionPlugin {
    static readonly name: string;
    readonly manifestPath: string;
    readonly browser: DevOptions['browser'];
    constructor(options: PluginInterface);
    apply(compiler: Compiler): void;
}