rollup.config.js

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

// This is the Rollup configuration for the study template. It is
// part of the build system, and you should not have to modify it.

import commonjs from "@rollup/plugin-commonjs";
import replace from "@rollup/plugin-replace";
import resolve from "@rollup/plugin-node-resolve";
import copy from "rollup-plugin-copy";
import globby from "globby";
import webScienceRollupPlugin from "@mozilla/web-science/rollup-plugin";

/**
 * Helper to detect developer mode.
 *
 * @param cliArgs the command line arguments.
 * @return {Boolean} whether or not developer mode is enabled.
 */
function isDevMode(cliArgs) {
    return Boolean(cliArgs["config-enable-developer-mode"]);
}

/**
 * Helper to detect emulator mode.
 *
 * @param cliArgs the command line arguments.
 * @return {Boolean} whether or not emulator mode is enabled.
 */
function isEmulatorMode(cliArgs) {
    return Boolean(cliArgs["config-enable-emulator-mode"]);
}

export default (cliArgs) => {
    // Configuration for the main background script, src/background.js.
    // The script will be output to dist/background.js with any module
    // dependencies (your own modules or modules from NPM) bundled in.
    const rollupConfig = [
        {
            input: "src/background.js",
            output: {
                file: "dist/background.js",
                sourcemap: isDevMode(cliArgs) ? "inline" : false,
            },
            plugins: [
                replace({
                    preventAssignment: true,
                    // In Developer Mode, the study does not submit data and
                    // gracefully handles communication errors with the Core
                    // Add-on.
                    __ENABLE_DEVELOPER_MODE__: isDevMode(cliArgs),
                    __ENABLE_EMULATOR_MODE__: isEmulatorMode(cliArgs),
                }),
                webScienceRollupPlugin(),
                resolve({
                    browser: true,
                }),
                commonjs()
            ],
        }
    ];

    // Configuration for content scripts (src/**/*.content.js) and
    // worker scripts (src/**/*.worker.js). These files will be
    // output to dist/ with the same relative path they have in
    // src/, but with any module dependencies (your own modules or
    // modules from npm) bundled in. We provide this configuration
    // because content scripts and worker scripts have separate
    // execution environments from background scripts, and a
    // background script might want to reference the bundled
    // scripts (e.g., browser.contentScripts.register() or new
    // Worker()).
    const scriptPaths = globby.sync([`src/**/*.content.js`, `src/**/*.worker.js`]);
    for (const scriptPath of scriptPaths) {
        rollupConfig.push({
            input: scriptPath,
            output: {
                file: `dist/${scriptPath.slice("src/".length)}`,
                format: "iife",
                sourcemap: isDevMode(cliArgs) ? "inline" : false,
            },
            plugins: [
                webScienceRollupPlugin(),
                resolve({
                    browser: true,
                }),
                commonjs(),
                // Copy in the Rally SDK content script and webextension polyfill.
                copy({
                    targets: [{
                        src: [
                            "node_modules/@mozilla/rally/dist/rally-content.js",
                        ],
                        dest: "dist/content/",
                    }],
                    flatten: true,
                }),
                copy({
                    targets: [{
                        src: [
                            "node_modules/webextension-polyfill/dist/browser-polyfill.js",
                        ],
                        dest: "dist/",
                    }],
                    flatten: true,
                }),
            ],
        });
    }

    return rollupConfig;
}