chore: import upstream snapshot with attribution
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const fs = require("node:fs");
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const { loadEnvFile } = require("node:process");
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const modulePositions = []; // will get list from index.html
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const regionRegEx = /"region ([^"]*)/i;
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const indexFileName = "index.html";
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const discoveredPositionsJSFilename = "js/positions.js";
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const { styleText } = require("node:util");
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const Log = require("logger");
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const globals = require("globals");
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const { Linter } = require("eslint");
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const { getConfigFilePath } = require("#server_functions");
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const linter = new Linter({ configType: "flat" });
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class ConfigError extends Error {
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constructor (message) {
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super(message);
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this.name = "ConfigError";
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}
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}
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const requireFromString = (src) => {
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const m = new module.constructor();
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m._compile(src, "");
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return m.exports;
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};
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// return all available module positions
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const getAvailableModulePositions = () => {
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return modulePositions;
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};
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// return if position is on modulePositions Array (true/false)
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const moduleHasValidPosition = (position) => {
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if (getAvailableModulePositions().indexOf(position) === -1) return false;
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return true;
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};
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const getModulePositions = () => {
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// if not already discovered
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if (modulePositions.length === 0) {
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// get the lines of the index.html
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const lines = fs.readFileSync(indexFileName).toString().split("\n");
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// loop thru the lines
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lines.forEach((line) => {
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// run the regex on each line
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const results = regionRegEx.exec(line);
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// if the regex returned something
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if (results && results.length > 0) {
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// get the position parts and replace space with underscore
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const positionName = results[1].replace(" ", "_");
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// add it to the list only if not already present (avoid duplicates)
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if (!modulePositions.includes(positionName)) {
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modulePositions.push(positionName);
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}
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}
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});
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try {
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fs.writeFileSync(discoveredPositionsJSFilename, `const modulePositions=${JSON.stringify(modulePositions)}`);
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}
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catch {
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Log.error("unable to write js/positions.js with the discovered module positions\nmake the MagicMirror/js folder writeable by the user starting MagicMirror");
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}
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}
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// return the list to the caller
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return modulePositions;
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};
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/**
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* Checks the config for deprecated options and throws a warning in the logs
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* if it encounters one option from the deprecated.js list
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* @param {object} userConfig The user config
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*/
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const checkDeprecatedOptions = (userConfig) => {
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const deprecated = require(`${global.root_path}/js/deprecated`);
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// check for deprecated core options
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const deprecatedOptions = deprecated.configs;
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const usedDeprecated = deprecatedOptions.filter((option) => userConfig.hasOwnProperty(option));
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if (usedDeprecated.length > 0) {
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Log.warn(`WARNING! Your config is using deprecated option(s): ${usedDeprecated.join(", ")}. Check README and Documentation for more up-to-date ways of getting the same functionality.`);
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}
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// check for deprecated module options
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for (const element of userConfig.modules) {
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if (deprecated[element.module] !== undefined && element.config !== undefined) {
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const deprecatedModuleOptions = deprecated[element.module];
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const usedDeprecatedModuleOptions = deprecatedModuleOptions.filter((option) => element.config.hasOwnProperty(option));
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if (usedDeprecatedModuleOptions.length > 0) {
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Log.warn(`WARNING! Your config for module ${element.module} is using deprecated option(s): ${usedDeprecatedModuleOptions.join(", ")}. Check README and Documentation for more up-to-date ways of getting the same functionality.`);
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}
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}
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}
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};
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/**
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* Loads the config file. Combines it with the defaults and returns the config
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* @returns {object} an object holding full and redacted config
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*/
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const loadConfig = () => {
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Log.log("Loading config ...");
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const defaults = require("./defaults");
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if (global.mmTestMode) {
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// if we are running in test mode
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defaults.address = "0.0.0.0";
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}
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// For this check proposed to TestSuite
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// https://forum.magicmirror.builders/topic/1456/test-suite-for-magicmirror/8
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const configFilename = getConfigFilePath();
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let templateFile = `${configFilename}.template`;
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// check if templateFile exists
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try {
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fs.accessSync(templateFile, fs.constants.F_OK);
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Log.warn("config.js.template files are deprecated and not used anymore. You can use variables inside config.js so copy the template file content into config.js if needed.");
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} catch {
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// no action
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}
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// check if config.env exists
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const configEnvFile = `${configFilename.substr(0, configFilename.lastIndexOf("."))}.env`;
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try {
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if (fs.existsSync(configEnvFile)) {
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// load content into process.env
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loadEnvFile(configEnvFile);
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}
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} catch (error) {
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Log.log(`${configEnvFile} does not exist. ${error.message}`);
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}
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// Load config.js and catch errors if not accessible
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try {
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let configContent = fs.readFileSync(configFilename, "utf-8");
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const hideConfigSecrets = configContent.match(/^\s*hideConfigSecrets: true.*$/m);
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let configContentFull = configContent;
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let configContentRedacted = hideConfigSecrets ? configContent : undefined;
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Object.keys(process.env).forEach((env) => {
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configContentFull = configContentFull.replaceAll(`\${${env}}`, process.env[env]);
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if (hideConfigSecrets) {
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if (env.startsWith("SECRET_")) {
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configContentRedacted = configContentRedacted.replaceAll(`"\${${env}}"`, `"**${env}**"`);
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configContentRedacted = configContentRedacted.replaceAll(`\${${env}}`, `**${env}**`);
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} else {
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configContentRedacted = configContentRedacted.replaceAll(`\${${env}}`, process.env[env]);
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}
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}
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});
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configContentRedacted = configContentRedacted ? configContentRedacted : configContentFull;
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const configObj = {
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configFilename: configFilename,
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configContentFull: configContentFull,
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configContentRedacted: configContentRedacted,
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redactedConf: Object.assign({}, defaults, requireFromString(configContentRedacted)),
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fullConf: Object.assign({}, defaults, requireFromString(configContentFull))
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};
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if (Object.keys(configObj.fullConf).length === 0) {
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Log.error("WARNING! Config file appears empty, maybe missing module.exports last line?");
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}
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checkDeprecatedOptions(configObj.fullConf);
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try {
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const cfg = `let config = { basePath: "${configObj.fullConf.basePath}"};`;
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fs.writeFileSync(`${global.root_path}/config/basepath.js`, cfg, "utf-8");
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} catch (error) {
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Log.error(`Could not write config/basepath.js file: ${error.message}`);
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}
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return configObj;
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} catch (error) {
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if (error.code === "ENOENT") {
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Log.error(`Could not find config file: ${configFilename}`);
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} else if (error.code === "EACCES") {
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Log.error(`No permission to read config file: ${configFilename}`);
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} else {
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Log.error(`Cannot access config file: ${configFilename}\n${error.message}`);
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}
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throw new ConfigError("");
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}
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};
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/**
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* Checks the config file using eslint.
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* @param {object} configObject the configuration object
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*/
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const checkConfigFile = (configObject) => {
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let configObj = configObject;
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if (!configObj) configObj = loadConfig();
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const configFileName = configObj.configFilename;
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// Validate syntax of the configuration file.
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Log.info(`Checking config file ${configFileName} ...`);
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// I'm not sure if all ever is utf-8
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const configFile = configObj.configContentFull;
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const errors = linter.verify(
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configFile,
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{
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languageOptions: {
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ecmaVersion: "latest",
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globals: {
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...globals.browser,
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...globals.node
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}
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},
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rules: {
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"no-sparse-arrays": "error",
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"no-undef": "error"
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}
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},
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configFileName
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);
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if (errors.length === 0) {
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Log.info(styleText("green", "Your configuration file doesn't contain syntax errors :)"));
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validateModulePositions(configObj.fullConf);
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} else {
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let errorMessage = "Your configuration file contains syntax errors :(";
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for (const error of errors) {
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errorMessage += `\nLine ${error.line} column ${error.column}: ${error.message}`;
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}
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Log.error(errorMessage);
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throw new ConfigError("");
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}
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};
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/**
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* Validates the modules array in the config object.
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* Checks that:
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* - `modules` is an array
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* - every entry has a `module` property of type string
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* - every entry's `position` (if set) is a known region from index.html
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*
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* Unknown positions produce a warning; structural errors are fatal.
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* @param {object} data - The full config object to validate.
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*/
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const validateModulePositions = (data) => {
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Log.info("Checking modules structure configuration ...");
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const positionList = getModulePositions();
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// `modules` always exists (defaults.js provides a default array), but guard against it being overridden with a non-array value
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if (data.modules !== undefined && !Array.isArray(data.modules)) {
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Log.error("This module configuration contains errors:\nmodules must be an array");
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throw new ConfigError("");
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}
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// Validate each module entry
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for (const [index, mod] of (data.modules ?? []).entries()) {
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// Each module entry must be an object so we can safely inspect its fields
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if (mod === null || typeof mod !== "object" || Array.isArray(mod)) {
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Log.error(`This module configuration contains errors:\n${JSON.stringify(mod, null, 2)}\nmodule entry must be an object`);
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throw new ConfigError("");
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}
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// `module` (the module name) is required and must be a string
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if (typeof mod.module !== "string") {
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Log.error(`This module configuration contains errors:\n${JSON.stringify(mod, null, 2)}\nmodule: must be a string`);
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throw new ConfigError("");
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}
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// `position` is optional, but must be a string when provided
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if (mod.position !== undefined && typeof mod.position !== "string") {
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Log.error(`This module configuration contains errors:\n${JSON.stringify(mod, null, 2)}\nposition: must be a string`);
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throw new ConfigError("");
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}
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// `position` is optional, but when set it must match a known region
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if (mod.position && !positionList.includes(mod.position)) {
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Log.warn(`Module ${index} ("${mod.module}") uses unknown position: "${mod.position}"`);
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Log.warn(`Known positions are: ${positionList.join(", ")}`);
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}
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}
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Log.info(styleText("green", "Your modules structure configuration doesn't contain errors :)"));
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};
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module.exports = { loadConfig, getModulePositions, moduleHasValidPosition, getAvailableModulePositions, checkConfigFile, ConfigError };
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