主進程

import ClearTouchGroundCacheCode from '../utils/workers/clearTouchGroundCache.worker.js';  
const blob = new Blob([ClearTouchGroundCacheCode], { type: 'application/javascript' });
    this.clearTouchGroundCacheWorker = new Worker(URL.createObjectURL(blob));

 this.clearTouchGroundCacheWorker.postMessage({
                type: 'clearCache',
                data: { cache: JSON.stringify(_context.touchGroundCache?.[2]), minGx, maxGx, minGz, maxGz, minX, maxX, minZ, maxZ },
              });

    // 接收 Worker 返回的數據
    this.clearTouchGroundCacheWorker.onmessage = (e) => {
      const msg = e.data;
      if (msg.type === 'clearDone') {
        const { keysToDelete, minX, maxX, minZ, maxZ } = msg.data;
        // 執行刪除
        for (const key of keysToDelete) {
          if (_context.touchGroundCache[2]?.[key]) {
            // delete _context.touchGroundCache[2][key];
            _context.touchGroundCache[2][key] = null; //比delete更快
          }
        }

        console.log(`? 已清除x:${minX}-${maxX}z:${minZ}- ${maxZ}緩存`);
      }
    };

 子進程：

/*
 * @Author: Simoon.jia
 * @Date: 2025-10-11 14:57:24
 * @LastEditors: Simoon.jia
 * @LastEditTime: 2025-10-11 15:21:15
 * @Description: 描述
 */
// clearTouchGroundCache.worker.js
console.log('[Worker] clearTouchGroundCache.worker.js 已加載');

self.onmessage = (e) => {
  const msg = e.data;
  if (msg.type === 'clearCache') {
    const { cache, minGx, maxGx, minGz, maxGz, minX, maxX, minZ, maxZ } = msg.data;
    const keysToDelete = [];
    const newCache = JSON.parse(cache);
    // 遍歷格子索引，篩選存在的 key
    for (const key in newCache) {
      const [gx, gz] = key.split('_').map(Number);
      if (gx >= minGx && gx <= maxGx && gz >= minGz && gz <= maxGz) {
        keysToDelete.push(key);
      }
    }

    // 回傳 key 數組給主線程
    self.postMessage({
      type: 'clearDone',
      data: { keysToDelete, minX, maxX, minZ, maxZ },
    });
  }
};

roolup配置：

import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import glslify from 'rollup-plugin-glslify';
import { string } from 'rollup-plugin-string';
export default {
  input: 'src/avw.js',
  output: [
    {
      file: 'dist/avw.scene.core.min.js',
      format: 'umd',
      name: 'avwCore',
      sourcemap: true,
    },
    {
      file: '../AVW.Scene/lib/avw.scene.core.module.min.js',
      format: 'esm',
      name: 'avwCore',
      sourcemap: false,
    },
  ],
  plugins: [
    resolve({
      browser: true,
    }),
    commonjs(),
    glslify(),
    string({
      include: '**/*.worker.js', // 把 worker 當作字符串處理
    }),
  ],
  onwarn(warning, warn) {
    if (warning.code === 'EVAL') return;
    warn(warning);
  },
};