IsTrue always works

[tex0l]

Versions

• dirty-chai v2.0.1
• chai v4.1.2
• node v10.2.1

Steps to reproduce

const chai = require('chai')
const dc = require('dirty-chai')
chai.use(dc)
try {
  chai.assert.isTrue(false)
  console.log('I should never be called')
} catch (error) {
  console.log('I should be called')
}

Expected behaviour

I should get I should be called.

Actual behaviour

I get I should never be called.