let RowData: PricingOrder[] | Notification[] | ActionLog[] | string[];
Assuming that RowData can also be of type string[] (
For example, RowData = ['apple','banana','cherry'];if(typeof RowData === 'string[]'){
//perform operations specific to string arrays
} else {
//perform operations specific to custom class arrays
}
It seems like your comment suggests that your array is not of a combinational type. In order to determine this, you just need to confirm two things:
var srray = ["a","b"];
let isArrayStringType = false;
if(Array.isArray(srray)){
isArrayStringType = srray.length > 0 && typeof srray[0] == 'string'
}
console.log(isArrayStringType)Update
The return type of your function does not include the string type, so you can easily verify this by checking the second one: typeof srray[0] == 'string'
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