Fixing "Do not access Object.prototype method 'hasOwnProperty' from target object" error

Based on hasOwnProperty() method docs I wrote the following:

const myObj = {
  prop1: 'val1',
  prop2: 'val2'
}

if (!myObj.hasOwnProperty('prop3')) {
  myObj.prop3 = 'val3'
}

But I'm getting this error:

Do not access Object.prototype method 'hasOwnProperty' from target object

Why does it not work if it's the same as in the docs, and how to fix it?