Figma Support Forum

Cannot find name 'document' error when building plugin UI with Webpack

Hi Figma,

I’m following the instructions to set up Webpack for a Figma plugin I’m working on as per these https://www.figma.com/plugin-docs/bundling-webpack/ instructions.

However, after setting everything up, I’m running into the following errors while building the plugin

ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts
3:0-8
[tsl] ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts(3,1)
      TS2584: Cannot find name 'document'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.

ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts
4:18-26
[tsl] ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts(4,19)
      TS2584: Cannot find name 'document'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.

ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts
4:54-70
[tsl] ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts(4,55)
      TS2304: Cannot find name 'HTMLInputElement'.

ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts
6:2-8
[tsl] ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts(6,3)
      TS2552: Cannot find name 'parent'. Did you mean 'parseInt'?

ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts
9:0-8
[tsl] ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts(9,1)
      TS2584: Cannot find name 'document'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.

ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts
10:2-8
[tsl] ERROR in /Users/aashreys/Workspace/figma/figma-controller-prototyper/src/ui.ts(10,3)
      TS2552: Cannot find name 'parent'. Did you mean 'parseInt'?

6 errors have detailed information that is not shown.
Use 'stats.errorDetails: true' resp. '--stats-error-details' to show it.

webpack 5.52.1 compiled with 6 errors in 220 ms

After searching the internet it seems like the solution to the problem is to compile TS against the ES6 standard. But being very new to web dev, I’m not sure what this means or how I should go about doing it.

Can someone help? TIA :slight_smile:

There is a solution described in the error message you sent:

Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.

In the tsconfig.json file or in the TS compiler options passed to webpack, add "dom" to the array called "lib". https://www.typescriptlang.org/tsconfig/lib.html

Ah I didn’t know where to add it earlier, but that fixed the error I mentioned. I now get a new Webpack error that seems to be coming from HtmlWebpackInlineSourcePlugin

aashreys@Aashreys-Mac-mini figma-controller-prototyper % npx webpack --mode=development --watch
asset ui.js 49.4 KiB [compared for emit] (name: ui)
asset code.js 36.6 KiB [compared for emit] (name: code)
asset ui.html 909 bytes [compared for emit]
runtime modules 937 bytes 4 modules
cacheable modules 26.6 KiB
  modules by path ./node_modules/ 8.86 KiB
    modules by path ./node_modules/style-loader/dist/runtime/*.js 5.02 KiB 6 modules
    modules by path ./node_modules/css-loader/dist/runtime/*.js 3.85 KiB
      ./node_modules/css-loader/dist/runtime/cssWithMappingToString.js 2.28 KiB [built] [code generated]
      ./node_modules/css-loader/dist/runtime/api.js 1.57 KiB [built] [code generated]
  modules by path ./src/ 17.7 KiB
    modules by path ./src/*.ts 14.4 KiB
      ./src/ui.ts 384 bytes [built] [code generated]
      ./src/code.ts 14 KiB [built] [code generated]
    modules by path ./src/*.css 3.32 KiB
      ./src/ui.css 1.11 KiB [built] [code generated]
      ./node_modules/css-loader/dist/cjs.js!./src/ui.css 2.22 KiB [built] [code generated]

ERROR in   TypeError: Cannot read property 'source' of undefined
  
  - index.js:53 HtmlWebpackInlineSourcePlugin.resolveSourceMaps
    [figma-controller-prototyper]/[html-webpack-inline-source-plugin]/index.js:53:22
  
  - index.js:118 HtmlWebpackInlineSourcePlugin.processTag
    [figma-controller-prototyper]/[html-webpack-inline-source-plugin]/index.js:118:30
  
  - index.js:42 
    [figma-controller-prototyper]/[html-webpack-inline-source-plugin]/index.js:42:24
  
  - Array.forEach
  
  - index.js:41 HtmlWebpackInlineSourcePlugin.processTags
    [figma-controller-prototyper]/[html-webpack-inline-source-plugin]/index.js:41:23
  
  - index.js:25 
    [figma-controller-prototyper]/[html-webpack-inline-source-plugin]/index.js:25:27
  
  
  - new Promise
  
  
  - Hook.js:22 Hook.PROMISE_DELEGATE [as _promise]
    [figma-controller-prototyper]/[tapable]/lib/Hook.js:22:14
  


webpack 5.52.1 compiled with 1 error in 2179 ms

Not sure what this means, I don’t use webpack myself.

Gotcha, lemme see if I can get this to compile without Webpack. I don’t have too many files in my plugin yet.

Just to clarify, I don’t use Webpack but I do use Rollup, which is essentially the same thing with different configuration and extensions. Also thinking of switching to esbuild.

If you wanna compile to a single file with just the TypeScript compiler, it’s possible: https://www.typescriptlang.org/tsconfig/#outFile, but only if you are not using any libraries and only want to compile the files that you have created. I don’t think TS can compile all imported libraries too.

Gotcha. I do have a few files I want to bundle, so something simple and fast like esbuild will be perfect. I’m looking at it now. Thanks so much!

@Gleb can you share how you are using rollup to create a single UI HTML file with css and js inline? I tried using esbuild, but there seems to be no plugin that can achieve this. Now I’m left with Rollup as my only option.

Check out this project, I use a slightly modified config from here for Rollup: GitHub - thomas-lowry/figsvelte: A boilerplate for creating Figma plugins with Svelte

Regarding esbuild, I haven’t tried it yet but check out the following resources: