generated getters/setters for class property assertions break property ownership

This is a:

• Bug Report
• Feature Request
• Question
• Other

Which concerns:

• flow-runtime
• babel-plugin-flow-runtime
• flow-runtime-validators
• flow-runtime-mobx
• flow-config-parser
• The documentation website

---

When I trying to clone my object with lodash clone method, it loses values of object properties:

// @flow

import { clone } from 'lodash'

class A {
  prop: number

  constructor(prop: number) {
    this.prop = prop
  }
}

test('cloning of typed objects', () => {
  const a = new A(42)

  const copy = clone(a)

  expect(a).not.toBe(copy)
  expect(copy.prop).toBe(42) 
})

With example above I got a error from jest:

 FAIL  a.spec.js
  ✕ cloning of typed objects (6ms)

  ● cloning of typed objects

    expect(received).toBe(expected)
    
    Expected value to be (using ===):
      42
    Received:
      undefined

What is the expected behaviour?

It should returns cloned object with setted properties and works correctly with lodash, because it’s popular package from npm.

---

Which package versions are you using?

• flow-runtime - 0.16
• babel-plugin-flow-runtime - 0.15
• lodash - 4

[jedwards1211]

I was unable to reproduce this. Would you mind putting your package.json, yarn.lock or package-lock.json if any, .babelrc, and .flowconfig into a gist?

[phpnode]

@jedwards1211 yeah it’s a little bit tricky / messy, this particular transform happens in https://github.com/codemix/flow-runtime/blob/master/packages/babel-plugin-flow-runtime/src/transformVisitors.js#L789