Getting error in angular function calling

Question

I have below function which return an array-based it has two inputs one is type and second one is input array.

You need to assert the type before you start calling properties. The pipe means the instance can implement IAssetClass or ICurrency so you can't assume that an instance will have field assetClass available. — Igor
– Igor, Commented Oct 10, 2019 at 17:14
@Igor can you help me in this as well stackoverflow.com/questions/58329020/… — Passionate Coder
– Passionate Coder, Commented Oct 10, 2019 at 18:29

Igor · Accepted Answer · 2019-10-10 17:16:56Z

2

You need to assert the type before you start calling properties. The pipe means the instance can implement IAssetClass or ICurrency so you can't assume that an instance will have field assetClass available.

  getChartData(type : Type, data : (IAssetClass | ICurrency)[])  : IChartClass[] {
    let returnArr = [];
    if (type === 0) {
      returnArr = data.map(
        (row:IAssetClass) => ({ 'name': row.assetClass, 'weighting': row.weighting }),
      )
    } else {
      returnArr = data.map(
        (row:ICurrency) => ({ 'name': row.riskCurrency, 'weighting': row.weighting }),
      )
    }  
    return returnArr;  
  }

answered Oct 10, 2019 at 17:16

Igor

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Passionate Coder Over a year ago

can you help me in this as well stackoverflow.com/questions/58329020/…

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