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blumi78's avatar
blumi78
Helper I
8 years ago

Custom Visual: Using Javascript Promises in Internet Explorer 11

IE 11 still doesn't support ES2015 features like Promises.   My default approach here is to use a Polyfill lib, include it in "externalJS" section of pbiviz.json and add "es2015" as lib to tsconfig...
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v-viig's avatar
v-viig
Community Champion
8 years ago

This issue is related to the fact that Power BI creates a copy of window object to isolate PBI code from Custom Visual's code.

Such solution might produce issues with some native methods and it produces issues with importing external libraries.

 

Meanttime, we're implementing Webpack based PBIVIZ tools to support ES2015 and get rid of this issue by additional code isolation. You can already check it out. It's avaialbe under beta tag on NPM.

 

Ignat Vilesov,

Software Engineer

 

Microsoft Power BI Custom Visuals

[email protected]

  • blumi78's avatar
    blumi78
    Helper I
    8 years ago

    Tried the beta version (@2.0.1) of the powerbi-visuals-tools package. Gives me a "Syntax error" in IE11 right away with the sample visual that you get with "pbiviz new". Other browsers work, though.

     

    If you say, it's safe to use window["Promise"], then I can work with that.

    • v-viig's avatar
      v-viig
      Community Champion
      8 years ago

      Yeah, window["Promise"] will probably work well.

       

      Ignat Vilesov,

      Software Engineer

       

      Microsoft Power BI Custom Visuals

      [email protected]

      • tpatel's avatar
        tpatel
        Frequent Visitor
        8 years ago

        Can you please show me the function how to implement?