Get index of enum value typescript

I have the following string enum:

export enum RecordStatus {
   ONGOING_ADMINISTRATIVE_ANALYSIS = 'ONGOING_ADMINISTRATIVE_ANALYSIS',

   ONGOING_TECHNICAL_ANALYSIS = 'ONGOING_TECHNICAL_ANALYSIS',

   COMPLETED_APPLICATION = 'COMPLETED_APPLICATION'
}

I have the following function:

setTimelineStatus(status: RecordStatus) : void {
    console.log("State :" + status); // ON_GOING_TECHNICAL_ANALYSIS

    console.log(RecordStatus.valueOf(status).ordinal()); // doesn't work. Should print 1

    console.log(RecordStatus.valueOf("ON_GOING_TECHNICAL_ANALYSIS").ordinal()); // doesn't work either. Should print 1
}

This function retrieves a set enum as parameter, for example RecordStatus.ON_GOING_TECHNICAL_ANALYSIS. I want to get the index (it should be 1 in above case). I tried the solution in this thread Get index of enum from string? but I’ve got this error:

I don’t understand why I have this error. I only want the index of the enum value.

const enumValue = SampleEnum["enumName"];

Object.keys(RecordStatus).indexOf('ON_GOING_TECHNICAL_ANALYSIS');