使用React js完成web前端

chusql-web/frontend/bin/lib/config.js

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+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+
+// CLI 配置文件读写：默认值、点号路径访问与类型解析。
+
+export const DEFAULT_CONFIG = Object.freeze({
+  port: 5173,
+  host: '127.0.0.1',
+  autoOpenBrowser: true,
+  adapter: 'mock',
+});
+
+export function defaultConfigPath() {
+  return path.join(os.homedir(), '.chusql', 'config.json');
+}
+
+export function readConfig(file = defaultConfigPath()) {
+  if (!fs.existsSync(file)) {
+    writeConfig(file, DEFAULT_CONFIG);
+    return { ...DEFAULT_CONFIG };
+  }
+  let parsed;
+  try {
+    parsed = JSON.parse(fs.readFileSync(file, 'utf8'));
+  } catch {
+    throw new Error(`Configuration file is not valid JSON: ${file}`);
+  }
+  if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed)) throw new Error(`Configuration must be a JSON object: ${file}`);
+  return { ...DEFAULT_CONFIG, ...parsed };
+}
+
+export function writeConfig(file, value) {
+  fs.mkdirSync(path.dirname(path.resolve(file)), { recursive: true });
+  fs.writeFileSync(file, `${JSON.stringify(value, null, 2)}\n`, 'utf8');
+}
+
+export function parseConfigValue(raw) {
+  if (/^-?\d+(?:\.\d+)?$/.test(raw)) return Number(raw);
+  if (raw === 'true') return true;
+  if (raw === 'false') return false;
+  return raw;
+}
+
+const FORBIDDEN_PATH_PARTS = new Set(['__proto__', 'prototype', 'constructor']);
+
+function configPathParts(dottedPath) {
+  const parts = dottedPath.split('.').filter(Boolean);
+  if (!parts.length) throw new Error('Configuration key must not be empty.');
+  if (parts.some((part) => FORBIDDEN_PATH_PARTS.has(part))) throw new Error('Configuration key contains a forbidden path segment.');
+  return parts;
+}
+
+export function getAtPath(value, dottedPath) {
+  return configPathParts(dottedPath).reduce((current, part) => current && typeof current === 'object' ? current[part] : undefined, value);
+}
+
+export function setAtPath(value, dottedPath, nextValue) {
+  const parts = configPathParts(dottedPath);
+  let cursor = value;
+  for (const part of parts.slice(0, -1)) {
+    if (!cursor[part] || typeof cursor[part] !== 'object' || Array.isArray(cursor[part])) cursor[part] = {};
+    cursor = cursor[part];
+  }
+  cursor[parts.at(-1)] = nextValue;
+}
+
+export function unsetAtPath(value, dottedPath) {
+  const parts = configPathParts(dottedPath);
+  let cursor = value;
+  for (const part of parts.slice(0, -1)) {
+    if (!cursor[part] || typeof cursor[part] !== 'object') return false;
+    cursor = cursor[part];
+  }
+  return parts.length ? delete cursor[parts.at(-1)] : false;
+}