- 08-sets-maps: correct 'object order not guaranteed' -> objects keep insertion order except integer-like keys (reordered ascending); this is the real reason to prefer Map when numeric keys must stay ordered - 05-conditionals: soften 'only 6 falsy values' (note 0n/-0 exist) - 04-strings: annotate expected output for immutable string[0]='x' (silent in sloppy mode, TypeError in strict/ESM) - 04-strings: reword exercise C hint to direction-only (no full answer) - 09-loops: fix typo in for...in commentpull/1034/head
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