Discussion on: ngOnChanges best practice - always use SimpleChanges - always

[Miki (mike e)]

need to add let change = changes[propName]; otherwise change.currentValue is undefined

ngOnChanges(changes: SimpleChanges) {
    for (const propName in changes) {
      if (changes.hasOwnProperty(propName)) {
        let change = changes[propName];
        switch (propName) {
          case 'pageSize': {
            console.log(`pageSize changed to:`, change.currentValue);
          }
        }
      }
    }
  }