simplify produces an incorrect result

Describe the bug

Incorrect optimization.

To Reproduce

Minimal code to reproduce the bug

function draw () {
	const {canvas, currentLayout: layout} = this;

	canvas.width = layout.canvas.width + 2 * CANVAS_PADDING;
	canvas.height = layout.canvas.height + 2 * CANVAS_PADDING;
}

Actual Output

If there is no Error thrown,

function draw() {
  const {
    canvas,
    currentLayout: layout
  } = this;

  canvas.width += 2 * CANVAS_PADDING, canvas.height += 2 * CANVAS_PADDING;
}

Expected Output

function draw() {
  const {
    canvas,
    currentLayout: layout
  } = this;

  canvas.width = layout.canvas.width + 2 * CANVAS_PADDING, canvas.height = layout.canvas.width + 2 * CANVAS_PADDING;
}

Configuration

How are you using babel-minify? babel --plugins minify-simplify test.js

babel-minify version: 0.4.3

babel version : 7.1.0

babel-minify-config: none babelrc: none

[jsg2021]

My build process is webpack. I am using this minifier as a preset in the babel-loader… so, not really. Anyways, this has accidentally hijacked the original issue and I have found to be unrelated. (Which is why I updated my comment from two days ago) I originally thought this was related to the original issue, but I believe is intended behavior (the no-space between return and the quote)

[j-f1]

Can your build process substitute typeof define === "function" with true before you minify? This will also allow the minifier to remove unnecessary branches/conditionals.