rollup.config.js

import resolve from "@rollup/plugin-node-resolve";
import terser from "@rollup/plugin-terser";
import typescript from "@rollup/plugin-typescript";
import { exec } from "child_process";
import { homedir } from "os";
import { promisify } from "util";
import { name, version } from "./src/info.js";

const options = {
    /**
     * The filename of the output, taken from info.js
     */
    filename: `${name}-v${version}.js`,

    /**
     * Determines in what build mode the plugin should be build. The default here takes
     * from the environment (ex. CLI arguments) with "development" as fallback.
     */
    build: process.env.BUILD || "development",
};

/**
 * Tip: if you change the path here to your personal user folder,
 * you can ignore this change in git with:
 * ```
 * > git update-index --skip-worktree rollup.config.js
 * ```
 * To accept changes on this file again, use:
 * ```
 * > git update-index --no-skip-worktree rollup.config.js
 * ```
 */
async function getOutput() {
    if (options.build !== "development") {
        return `./dist/${options.filename}`;
    }

    const platform = process.platform;
    const pluginPath = `OpenRCT2/plugin/${options.filename}`;

    if (platform === "win32") {
        // Windows
        const { stdout } = await promisify(exec)(
            "powershell -command \"[Environment]::GetFolderPath('MyDocuments')\"",
        );
        return `${stdout.trim()}/${pluginPath}`;
    } else if (platform === "darwin") {
        // MacOS
        return `${homedir()}/Library/Application Support/${pluginPath}`;
    } // Linux
    else {
        const configFolder = process.env.XDG_CONFIG_HOME || `${homedir()}/.config`;
        return `${configFolder}/${pluginPath}`;
    }
}

/**
 * @type {import("rollup").RollupOptions}
 */
const config = {
    input: "./src/plugin.ts",
    output: {
        file: await getOutput(),
        format: "iife",
        compact: true,
    },
    treeshake: "smallest",
    plugins: [
        resolve(),
        typescript(),
        terser({
            compress: {
                passes: 5,
                toplevel: true,
                unsafe: true,
            },
            format: {
                comments: false,
                quote_style: 1,
                wrap_iife: true,
                beautify: options.build === "development",
            },
        }),
    ],
};
export default config;