Comparing undefined to object with null value throws

[saibotsivad]

Using uvu 0.5.1 with this test:

import { test } from 'uvu'
import * as assert from 'uvu/assert'

assert.equal(undefined, { foo: null })

Running via node with -r esm yields this output:

$  node -r esm /demo-uvu-error/test.js
✘   (0 / 1)

   FAIL  "reproduce error"
    Cannot convert undefined or null to object

    at hasOwnProperty (<anonymous>)
    at sort (/demo-uvu-error/node_modules/uvu/diff/index.js:163:40)
    at compare (/demo-uvu-error/node_modules/uvu/diff/index.js:199:21)
    at assert (/demo-uvu-error/node_modules/uvu/assert/index.js:30:28)
    at Proxy.equal (/demo-uvu-error/node_modules/uvu/assert/index.js:43:2)
    at Object.handler (/demo-uvu-error/test.js:150:12)
    at Number.runner (/demo-uvu-error/node_modules/uvu/dist/index.js:77:16)
    at exec (/demo-uvu-error/node_modules/uvu/dist/index.js:131:39)
    at /demo-uvu-error/node_modules/esm/esm.js:1:34535



  Total:     1
  Passed:    0
  Skipped:   0
  Duration:  2.06ms

I would, of course, expect the output to be something more like

    Expected values to be deeply equal:  (equal)

        ++{}                  (Expected)
        --{ foo: null }    (Actual)

I haven't had time to dig in to the uvu code to see what's going on.

[talentlessguy]

Same for null

it works with chai and built-in assert though. So definitely a bug in uvu/assert.

the fix could be probably unstrict checking for null and then converting to {}