chore: migrate from eslint/prettier to biome#48
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Replace eslint, eslint-config-prettier, globals, and prettier with @biomejs/biome 2.5.1. Config migrated via biome migrate commands with corrections for quote style and semicolons. Applies biome formatting across all source, test, and config files. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The rule requires Error({ cause }) which needs ES2022. tsconfig targets
ES2015, so disable the rule rather than change code that won't compile.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
eslint,@eslint/js,eslint-config-prettier,globals, andprettierwith@biomejs/biome@2.5.1eslint.config.mjs,.prettierrc,.prettierignore; addbiome.json(migrated viabiome migrate eslint/prettier)package.jsonscripts (lint,format) andlint-stagedto use biomeCONTRIBUTING.mdhook table to reflect biomeNotes
useErrorCauserule disabled — requiresError({ cause })which needs ES2022; tsconfig targets ES2015doubleand semicolons toalwaysto match existing code style (biome migration defaulted to its own preferences for the empty.prettierrc)Test plan
biome check .passes with no errorsnpm testpasses with 100% coverage (276 tests)🤖 Generated with Claude Code