JavaScript is poorly designed. It was barely designed at all; Brendan Eich wrote it in ten days, and we would be better off if he had been a worse developer and hadn't been able to accomplish that. Instead Netscape shipped what should have been an internal 0.1, and got its deficiencies enshrined as documented features so they could never be fixed.
Ten day Mocha had strict ==, so better in that regard. History is detailed at https://youtu.be/krB0enBeSiE. Rather than assuming a too-simple version, check out the details for how things went down.
Do-overs not possible, by better new forms over time helped. Honest q: Do you actually use modern JS at all?
