開發 JavaScript 時,你有沒有遇到過這樣的狀況。
頁面複用大量共通組件,這些共通組件大致都在同一個文件夾下。可是因爲組件分割和文件夾層級較深的緣故,你嚐嚐會寫出👇這樣的代碼。前端
// some.js import VodMediaPlayer from '../../../components/VodVideo/VodMediaPlayer' import VideoInfo from '../../../components/VodVideo/VideoInfo' import RecommendList from '../../../components/RecommendList/RecommendList' import Comment from '../../../components/Comment/Comment' import { get, mediaPath } from '../../../util/fetch' import { API_VIDEO, API_CHANNEL } from '../../../util/constants'
你知道本身在鍵盤上敲擊 ../
../../
../../../
時浪費了多少時間嗎?react
時間就是金錢。 ~名言
爲了解決這種問題,主流的前端工具都給出瞭解決方案。
本文介紹如何使用 babel plugin 的解決方案。git
首先咱們選擇 babel-plugin-module-resolver。github
$ npm install --save-dev babel-plugin-module-resolver
{ "presets": ["env", "react"], "plugins": [ ["module-resolver", { "root": ["./"], "alias": { "components": "./src/components", "util": "./src/util" } }] }
這時你的代碼能夠修改成👇npm
// some.js import VodMediaPlayer from 'components/VodVideo/VodMediaPlayer' import VideoInfo from 'components/VodVideo/VideoInfo' import RecommendList from 'components/RecommendList/RecommendList' import Comment from 'components/Comment/Comment' import { get, mediaPath } from 'util/fetch' import { API_VIDEO, API_CHANNEL } from 'util/constants'
⚠️注意: 若是你使用了 eslint,這時 eslint 會報錯,由於它不能處理新的寫法。json
咱們選擇 eslint-import-resolver-babel-modulebabel
$ npm install --save-dev eslint-plugin-import eslint-import-resolver-babel-module
配置 .eslintrcide
"settings": { "import/resolver": { "babel-module": {} } }
⚠️注意: 這時 eslint 不會報錯了, 可是你會發現你點擊 import
後面的組件名, VSCode 不會自動跳轉到組件定義。工具
{ "compilerOptions": { "baseUrl": ".", "paths": { "components/*": ["src/components/*"], "util/*": ["src/util/*"], "locales/*": ["src/locales/*"] } } }
到此爲止,咱們終於能夠 Say Goodbye to '../' '../../' '../../../'
了。fetch
https://github.com/parcel-bun...
https://github.com/tleunen/ba...
https://code.visualstudio.com...