Updating to v4.0.2 gives us the following in our build logs:
error 08-Jul-2021 12:04:17 Error: Unexpected token: punc (:)
error 08-Jul-2021 12:04:17 at TerserWriter
error 08-Jul-2021 12:04:17 -~- created here: -~-
error 08-Jul-2021 12:04:17 at new Plugin (/node_modules/broccoli-terser-sourcemap/node_modules/broccoli-plugin/dist/index.js:47:36)
v4.0.1 is working. Are we missing a transitive dependency update? Or is there an issue with v4.0.2?