[ugi-dev]

What and why

JavaScript and TypeScript private class names were split: class C { #p = 1; m() { this.#p } } produced " #":text p:variable at the declaration and #:text p:property at the access.

#name is now one token in JavaScript-like languages (JavaScript, TypeScript, JSX, TSX, and scripts in Vue/Svelte/HTML). Private names are always class members, so they are highlighted as properties, or as functions where a public member would be:

Source	Tokens
#p = 1 / this.#p / #p in o	#p:property
#m() {}, get #a() {}, #g = () => 1	#m:function, #a:function, #g:function
this.#m()	#m:property (as this.m())

A lone # stays text, and #! shebangs stay comments. Svelte {#if} blocks are unchanged.

Also refreshes the documented bundle sizes for the top of the stack.

Stacked on #14.

Closes #4

Validation

• bun run check passes.
• New tests in script-accuracy.test.ts (declaration, access, static, getters, methods, arrow fields, brand checks, escaped names), a corpus fixture, and streaming prefix/fuzz sources.
• Golden comparison against main: only #name tokens in JavaScript-like inputs change.

Gzip bytes	Before	After
highlight() wrapper	4,153	4,197
Core	3,735	3,774
JavaScript	4,252	4,294

Checklist

• bun run check passes
• Tests cover the change
• Changeset added (bunx changeset), or not needed for docs, tests, or internal changes
• Docs updated if behavior or APIs changed

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-22T05:17:46.681002Z	ea33960	PR opened

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📥 Commits

Reviewing files that changed from the base of the PR and between 8ef9385 and dddbe67.

📒 Files selected for processing: 10

• .changeset/fix-private-class-names.md
• docs/comparison.md
• packages/kirari/README.md
• packages/kirari/src/tokenize.ts
• packages/kirari/test/corpus/fixtures.ts
• packages/kirari/test/script-accuracy.test.ts
• packages/kirari/test/stream-fuzz.test.ts
• sites/docs/changelog/kirari/1.1.3.md
• sites/docs/content/limitations.md
• sites/docs/src/lib/site.ts

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[ugi-dev]

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