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Fix template literal whitespace collapse for adjacent quasis #427

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Merged
thecrypticace merged 2 commits into from
Dec 24, 2025
Merged

Fix template literal whitespace collapse for adjacent quasis #427

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1464d10
Fix template literal whitespace collapse for adjacent quasis
Dunqing Dec 24, 2025
8b8df16
Update changelog
thecrypticace Dec 24, 2025
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4 changes: 3 additions & 1 deletion CHANGELOG.md
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Expand Up @@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

- Nothing yet!
### Fixed

- Collapse whitespace in template literals with adjacent quasis ([#427](https://github.com/tailwindlabs/prettier-plugin-tailwindcss/pull/427))

## [0.7.2] - 2025-12-01

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2 changes: 1 addition & 1 deletion src/index.ts
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Expand Up @@ -630,7 +630,7 @@ function canCollapseWhitespaceIn(path: Path<import('@babel/types').Node, any>) {
let nodeEnd = entry.node.end ?? null

for (let quasi of entry.parent.quasis) {
let quasiStart = quasi.end ?? null
let quasiStart = quasi.start ?? null
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@thecrypticace thecrypticace Dec 24, 2025

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lol 🤦‍♂️

let quasiEnd = quasi.end ?? null

if (nodeStart !== null && quasiEnd !== null && nodeStart - quasiEnd <= 2) {
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8 changes: 8 additions & 0 deletions tests/format.test.ts
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Expand Up @@ -96,6 +96,14 @@ describe('whitespace', () => {
expect(result).toEqual(";<div className={`header${isExtendable ? ' header-extendable' : ''}`} />")
})

test('whitespace is not trimmed before template literal quasis without leading space', async ({ expect }) => {
let result = await format(";<div className={`${foo ? 'sm:p-0 p-0 ' : ''}header`}></div>", {
parser: 'babel',
})

expect(result).toEqual(";<div className={`${foo ? 'p-0 sm:p-0 ' : ''}header`}></div>")
})

test('duplicate classes are dropped', async ({ expect }) => {
let result = await format('<div class="underline line-through underline flex"></div>')

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