javascript - Gatsby 没有在生产中加载 useEffect 函数

Question

我正在使用 Gatsby.js 创建一个网站。
在我的组件中，我在 useEffect 函数中使用 Gsap 创建了动画。

调试时，一切正常。在生产中，useEffect 函数未运行，因此不显示动画。

我该做什么？
有任何想法吗？

感谢您的回答!

我的组件:

import React, { useRef, useEffect } from "react"
import styled from "styled-components"
import gsap from "gsap"
import WhatEver from "../../../static/whatever.svg"
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
import { faArrowDown } from '@fortawesome/free-solid-svg-icons'
import scrollTo from 'gatsby-plugin-smoothscroll';


const HeaderWrapper = styled.header`
  width: 100%;
  height: 100vh;
  min-height: 150px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  background-color: rgb(255, 216, 41);
`

const HeaderButton = styled.button`
  display: block;
  margin: 40px auto;
  border: 2px solid #000000;
`

const HeaderComponent = () => {

  const animWrapper = useRef(null)

  useEffect(() => {

    const [elements] = animWrapper.current.children

    const what = elements.getElementById('What')
    const ever = elements.getElementById('Ever')
    const button = document.getElementById('header-button')
    const icon = document.getElementById('header-icon')

    const whatChildrens = what.children
    const everChildrens = ever.children
    const allChildrens = [...whatChildrens, ...everChildrens]

    gsap.set([...allChildrens, button], { autoAlpha: 0 })

    const timeLine = gsap.timeline({ defaults: { ease: 'power3.inOut' } })

    timeLine
      .to(whatChildrens, { autoAlpha: 1, duration: 0.75 })
      .to(everChildrens, { autoAlpha: 1, stagger: 0.025 })
      .to(button, { autoAlpha: 1 })
  }, [])

  return (
      <HeaderWrapper className="header" id="main-header">
        <div ref={animWrapper} id="header-logo-wrapper">
          <WhatEver style={{width: '100%'}}/>

          <HeaderButton id="header-button" onClick={() => scrollTo('#poznaj-nas')}>
            <FontAwesomeIcon icon={faArrowDown} id="header-icon"/>
          </HeaderButton>
        </div>
      </HeaderWrapper>
  )
}

export default HeaderComponent

Answer 1

我认为正在发生的事情是 gsap 库正在从生产构建中摆脱出来。我会尝试调整你的 webpack 设置以确保它没有被删除，或者像这样包含它:

const gsap = require("gsap")

以我的经验，这阻止了图书馆被树摇晃。