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    Class TrackedValueMap<V, T, TResult>

    Keeps track of keyed values of type V (eg Point). It stores occurences in type T, which must extend from TrackerBase<V>, eg PointTracker.

    The creator function passed in to the constructor is responsible for instantiating the appropriate TrackerBase sub-class.

    export class PointsTracker extends TrackedValueMap<Points.Point> {
     constructor(opts:TrackOpts = {}) {
      super((key, start) => {
       if (start === undefined) throw new Error(`Requires start point`);
       const p = new PointTracker(key, opts);
       p.seen(start);
       return p;
      });
     }
    }

    Type Parameters

    Hierarchy (View Summary)

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    size

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    delete get getTrackedValue has ids initialValues last reset seen tracked trackedByAge valuesByAge

    Properties

    gog store

    Accessors

    Constructors

    Methods

    • Creates or returns a TrackedValue instance for id.

      Parameters

      • id: string
      • ...values: V[]

      Returns Promise<T>

    • Enumerate last received values

      Returns Generator<undefined | V, void, unknown>

      const pointers = pointTracker();
      const c = Points.centroid(...Array.from(pointers.lastPoints()));

    • For a given id, note that we have seen one or more values.

      Parameters

      • id: string

        Id

      • ...values: V[]

        Values(s)

      Returns Promise<TResult>

      Information about start to last value

    • Iterates underlying values, ordered by age (oldest first) First the named values are sorted by their elapsed value, and then we return the last value for that group.

      Returns Generator<undefined | V, void, unknown>

    Properties

    gog: Maps.GetOrGenerate<string, T, V>
    store: Map<string, T>

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