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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v1.0.119 18 Sep 2025

Code Quality Enhancements

Error Constructor Consistency - Standardized error handling throughout the codebase by converting legacy Error() calls to modern new Error() constructor syntax at multiple locations, improving consistency with JavaScript best practices.

Evidence

Changes in error handling patterns across multiple tool implementations, including BashOutput tool at line ~392500, SlashCommand tool at line ~395000, and KillShell tool at line ~398000 in v1.0.119.

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v1.0.119 →