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fix(web): defer math rendering while streaming

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This commit is contained in:
ZiyaZhang
2026-08-01 00:58:50 -07:00
parent 1e334fa955
commit 8ce4f07f92
2 changed files with 21 additions and 5 deletions
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15
packages/client/ui-primitives/tests/markdown.spec.tsx
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@@ -144,6 +144,21 @@ describe('MarkdownText', () => {
expect(container.querySelector('.katex-display annotation')?.textContent).toContain('\\frac{\\partial \\mathbf{u}}')
expect(container.querySelector('a')).toBeNull()
})
it('defers TeX rendering while streaming so incomplete formulas never flash KaTeX errors', () => {
const partial = '$$\n\\frac{\\partial \\mathbf{u}}{\\partial'
const complete = '$$\n\\frac{\\partial \\mathbf{u}}{\\partial t}\n$$'
const live = render(<MarkdownText text={partial} streaming />)
expect(live.container.querySelector('.katex')).toBeNull()
expect(live.container.querySelector('.katex-error')).toBeNull()
expect(live.container.textContent).toContain('\\frac{\\partial \\mathbf{u}}{\\partial')
live.rerender(<MarkdownText text={complete} />)
expect(live.container.querySelectorAll('.katex')).toHaveLength(1)
expect(live.container.querySelectorAll('.katex-display')).toHaveLength(1)
expect(live.container.querySelector('.katex-error')).toBeNull()
})
})
describe('JsonBlock', () => {