Class SetOrMapVariable

src/adapter/variableStore.ts:1138–1171

const entriesVariableName = '[[Entries]]';

class SetOrMapVariable extends ObjectVariable {
  private readonly size?: number;
  public readonly isMap: boolean;
  private readonly baseChildren = once(() => super.getChildren({ variablesReference: this.id }));

  constructor(context: VariableContext, remoteObject: Cdp.Runtime.RemoteObject) {
    super(context, remoteObject, NoCustomStringRepr);
    this.isMap = remoteObject.subtype === 'map';
    const cast = remoteObject.preview as MapPreview | SetPreview | undefined;
    this.size = Number(cast?.properties.find(p => p.name === 'size')?.value) ?? undefined;
  }

  public override async toDap(previewContext: PreviewContextType): Promise<Dap.Variable> {
    const dap = await super.toDap(previewContext);
    if (this.size && this.size > 100) {
      dap.indexedVariables = this.size;
    }

    return dap;
  }

  public override async getChildren(params: Dap.VariablesParams): Promise<Variable[]> {
    const baseChildren = await this.baseChildren();
    const entryChildren = await baseChildren
      .find(c => c.name === entriesVariableName)
      ?.getChildren(params);

    return [
      // filter to only show the actualy entries, not the array prototype/length
      ...(entryChildren || []).filter(v => v.sortOrder === SortOrder.Default),
      ...baseChildren.filter(c => c.name !== entriesVariableName),
    ];
  }
}

class ArrayVariable extends ObjectVariable {
  private length = 0;