Function patchOnProperties

packages/zone.js/lib/common/utils.ts:302–318

(obj: any, properties: string[] | null, prototype?: any)

}

export function patchOnProperties(obj: any, properties: string[] | null, prototype?: any) {
  if (properties) {
    for (let i = 0; i < properties.length; i++) {
      patchProperty(obj, 'on' + properties[i], prototype);
    }
  } else {
    const onProperties = [];
    for (const prop in obj) {
      if (prop.slice(0, 2) == 'on') {
        onProperties.push(prop);
      }
    }
    for (let j = 0; j < onProperties.length; j++) {
      patchProperty(obj, onProperties[j], prototype);
    }
  }
}

const originalInstanceKey = zoneSymbol('originalInstance');