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How to use the sparqlalgebrajs.Algebra.expressionTypes function in sparqlalgebrajs

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comunica / comunica / packages / actor-query-operation-orderby-sparqlee / lib / ActorQueryOperationOrderBySparqlee.ts View on Github

private extractSortExpression(expr: Algebra.Expression): Algebra.Expression {
    const { expressionType, operator } = expr;
    if (expressionType !== Algebra.expressionTypes.OPERATOR) { return expr; }
    return (operator === 'desc')
      ? expr.args[0]
      : expr;
  }