Convert Map to Record in typescript

Issue

I have a use case in which I am creating a metric using Math Expression-

new MathExpression({
  expression: `SUM([${Object.keys(metricArguments).join(", ")}])`,
  usingMetrics: metricArguments,
})

Here metricArguments is a Map<string,IMetric> but usingMetrics need Record<string,IMetric> type.I wanted to ask how can I convert a Map<string,Imetric> into Record<string,Imetric> as I have my metrics stored in map. I could also have inserted the metric in a Record type instead of map but could not find any method to do it.

Solution

You will need a function to convert the Map into an object literal.

function convertMapToObject(metricArguments: Map<string,IMetric>): Record<string,IMetric> {
  let newObject: Record<string,IMetric> = {}
  for (let [key, value] of metricArguments) {
    newObject[key] = value;
  }
  return newObject;
}

new MathExpression({
  expression: `SUM([${Object.keys(metricArguments).join(", ")}])`,
  usingMetrics: convertMapToObject(metricArguments),
})

Answered By - Hassan Naqvi