CODEWITHSUNDEEP
polymerinternet-explorer-11web-componentlit-element
Sujeet Kumar
Sujeet Kumar

Reputation: 159

Polymer lit-element web components not working in IE

I have create custom web component using Lit-Element and it is working fine with Chrome, Firefox, Eadge, Opera but only not working in IE 11. I also tried to compile it into es5 but still no luck.

Error in IE console:

enter image description here

enter image description here

Webpack rule:

module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          plugins: ['@babel/plugin-syntax-dynamic-import'],
          presets: [
            [
              '@babel/preset-env',
              {
                useBuiltIns: 'usage',
                targets: '>1%, not dead, not ie 11'
              }
            ]
          ]
        }
      }
    ]
  },

package.json

{
  "name":"pwa-conf-app",
  "main":"sw.js",
  "scripts":{
  "webpack":"webpack",
  "webpack-dev-server":"webpack-dev-server --history-api-fallback",
  "build":"npm run webpack -- --env.mode production --env.presets 
    serviceworker",
  "dev":"npm run webpack-dev-server -- --env.mode development",
  "dev:sw":"npm run webpack-dev-server -- --env.mode development  -- 
   env.presets serviceworker"
 },
  "keywords":[

 ],
 "devDependencies":{
  "@babel/core":"^7.1.5",
  "@babel/plugin-syntax-dynamic-import":"^7.0.0",
  "@babel/preset-env":"^7.1.5",
  "babel-loader":"^8.0.4",
  "babel-preset-minify":"^0.5.0",
  "clean-webpack-plugin":"^0.1.19",
  "copy-webpack-plugin":"^4.5.2",
  "css-loader":"^1.0.0",
  "html-webpack-plugin":"^3.2.0",
  "mini-css-extract-plugin":"^0.4.1",
  "style-loader":"^0.21.0",
  "webpack":"^4.23.1",
  "webpack-cli":"^3.0.8",
  "webpack-dev-server":"^3.1.4",
  "webpack-merge":"^4.1.3",
  "workbox-webpack-plugin":"^3.3.1"
 },
 "dependencies":{
  "@webcomponents/webcomponentsjs":"^2.1.3",
  "babel-preset-es2015":"^6.24.1",
  "lit-element":"^2.0.0"
 }
}

Upvotes: 0

Views: 1198

Answers (1)

Jordan Daigle
Jordan Daigle

Reputation: 455

You need to transpile lit-element and lit-html :

module: {
rules: [
  {
    test: /\.js$/,
    exclude: /node_modules/,
    loader: 'babel-loader',
    options: {
      plugins: ['@babel/plugin-syntax-dynamic-import'],
      presets: [
        [
          '@babel/preset-env',
          {
            useBuiltIns: 'usage',
            targets: '>1%, not dead, not ie 11'
          }
        ]
      ]
    }
  },
  {
    test: /node_modules(?:\/|\\)lit-element|lit-html/,
    use: {
      loader: 'babel-loader',
      options: {
        presets: ['@babel/preset-env']
      }
    }
  }
]
},

EDIT: And you will probably need to include "webcomponents-bundle.js"

and maybe @babel/polyfill

Upvotes: 1

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