[GitHub] [arrow] tielushko commented on issue #11662: [JS] ReferenceError: TextDecoder is not defined - running tests with React Testing Library.

[GitBox <gi...@apache.org>]

tielushko commented on issue #11662:
URL: https://github.com/apache/arrow/issues/11662#issuecomment-1049166247


   The top answer here: 
   
   https://stackoverflow.com/questions/57712235/referenceerror-textencoder-is-not-defined-when-running-react-scripts-test/57713960#57713960 
   
   seemed to resolve my issues. I also added the TextDecoder from utils and ran the test with the environment specified. 
   
   const Environment = require("jest-environment-jsdom");
   
   ```
   /**
    * A custom environment to set the TextEncoder and TextDecoder
    */
   module.exports = class CustomTestEnvironment extends Environment {
     async setup() {
       await super.setup();
       if (typeof this.global.TextEncoder === "undefined") {
         const { TextEncoder } = require("util");
         this.global.TextEncoder = TextEncoder;
       }
   
       if (typeof this.global.TextDecoder === "undefined") {
         const { TextDecoder } = require("util");
         this.global.TextDecoder = TextDecoder;
       }
     }
   };
   ```
   


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