vue3 后台生产环境自动检测更新

let lastSrcs: any; //上一次获取到的script地址

const scriptReg = /<script.*?type=['"]module['"].*?src=['"](.*?)['"].*?>/g;
/**
 * 获取最新页面中的script链接
 */
async function extractNewScript() {
    const env = import.meta.env.MODE
    if (env !== "production" ) return 
    const html = await fetch('/?_timestamp=' + Date.now()).then((res) => res.text());
    const result:any[] = [];
    // let match: any;
    scriptReg.lastIndex = 0
    const match = scriptReg.exec(html)
    if(match)result.push(match[1]);
    return result;
}
async function needUpdate() {
    const newScripts:any = await extractNewScript();
    if (!lastSrcs) {
        lastSrcs = newScripts;
        return false;
    }
    let result = false;
    if (lastSrcs.length !== newScripts.length) {
        result = true;
    }
    for (let i = 0; i < lastSrcs.length; i++) {
        if (lastSrcs[i] !== newScripts[i]) {
            result = true;
            break;
        }
    }
    lastSrcs = newScripts
    return result

}
const DURATION = 10000;
function autoRefresh() {
    setTimeout(async () => {
        const willUpdate = await needUpdate();
        if (willUpdate) {
            const result = confirm("页面有更新，点击确定刷新页面");
            if (result) {
                location.reload();
            }
        }
        autoRefresh();
    }, DURATION);
}
autoRefresh()

class 版

// 自动检测更新类
class AutoUpdate {
	static SCRIPT_REG = /<script.*?type=['"]module['"].*?src=['"](.*?)['"].*?>/g;// script标签中module属性的正则
	static DURATION = 10000; // 10s检测一次
	lastSrcs: string = '' //上一次获取到的script地址串

	constructor() {
		this.init()
	}
	async extractNewScript() {
		const env = import.meta.env.MODE
		if (env !== "production") return
		const html = await fetch('/?_timestamp=' + Date.now()).then((res) => res.text());
		const result: any[] = [];
		AutoUpdate.SCRIPT_REG.lastIndex = 0
		const match = AutoUpdate.SCRIPT_REG.exec(html)
		if (match) result.push(match[1]);
		return result;
	}
	async needUpdate() {
		const newScripts: any = await this.extractNewScript()
		//第一次保存
		if (!this.lastSrcs) {
			this.lastSrcs = newScripts;
			return false;
		}
		let result = false;
		//长度不一样则有更新
		if (this.lastSrcs.length !== newScripts.length) {
			result = true;
		}
		//内容不一样则有更新
		for (let i = 0; i < this.lastSrcs.length; i++) {
			if (this.lastSrcs[i] !== newScripts[i]) {
				result = true;
				break;
			}
		}
		//保存最新的
		this.lastSrcs = newScripts
		return result
	}

	init() {
		setTimeout(async () => {
			const willUpdate = await this.needUpdate();
			if (willUpdate) {
				const result = confirm("页面有更新，点击确定刷新页面");
				if (result) location.reload();
			}
			this.init()
		}, AutoUpdate.DURATION)
	}
}
new AutoUpdate()

main.ts
import ‘@/utils/auto.update’