Method connect

src/binding-expression.js:133–142

(evaluate)

  }

  connect(evaluate) {
    if (!this.isBound) {
      return;
    }
    if (evaluate) {
      let value = this.sourceExpression.evaluate(this.source, this.lookupFunctions);
      this.updateTarget(value);
    }
    this.sourceExpression.connect(this, this.source);
  }
}