UnaryConstraint.inheritsFrom is not a function

[anonyein]

Object.prototype.inheritsFrom = function (shuper) {
  try {
    function Inheriter() { }
    Inheriter.prototype = shuper.prototype;
    this.prototype = new Inheriter();
    this.superConstructor = shuper;
  } catch (error) {
    console.error("Inheritance error: " + error + error.stack);
  }
}

function UnaryConstraint(v, strength) {
  try {
    UnaryConstraint.superConstructor.call(this, strength);
    this.myOutput = v;
    this.satisfied = false;
  } catch (error) {
    console.error("Inheritance error: " + error + error.stack);
  }
}

function Constraint(strength) {
  this.strength = strength;
}

UnaryConstraint.inheritsFrom(Constraint)

com.caoccao.qjs4j.exceptions.JSException: TypeError: UnaryConstraint.inheritsFrom is not a function

[anonyein]

anonyein@69d7697