What looks like a small change involved a lot of thoughts. We explored design options (https://bit.ly/2JWWZ1l ), and worked with the @v8js team to implement (https://bit.ly/2NrQp4U ).https://twitter.com/ChromeDevTools/status/1192426360674885632 …
Very interesting to read through the green paper to realise how much intricacy is involved in implementing this extra aspect of dev tool ergonomics. I imagine that all developers have been bitten by the REPL’s ‘redeclaring let’ policy and it’s great to see innovation here.
