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fix(nuxt): check before appending comma in composable keys #8529

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merged 2 commits into from Nov 2, 2022
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fix(nuxt): check before appending comma in composable keys #8529

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6161a71
fix(nuxt): check before appending comma in composable keys
danielroe Oct 27, 2022
4abf359
Update packages/vite/src/plugins/composable-keys.ts
pi0 Nov 2, 2022
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4 changes: 3 additions & 1 deletion packages/vite/src/plugins/composable-keys.ts
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Expand Up @@ -59,9 +59,11 @@ export const composableKeysPlugin = createUnplugin((options: ComposableKeysOptio
break
}

const endsWithComma = code.slice(codeIndex + (node as any).start, codeIndex + (node as any).end - 1).trim().endsWith(',')
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@pi0 pi0 Nov 2, 2022 •
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Perf: this is a heavy operation to run on each code block, copying the whole string, trimming (that also copies) to only check the last character is ,. We could replace it with a look-behind loop.

Suggested change
const endsWithComma = code.slice(codeIndex + (node as any).start, codeIndex + (node as any).end - 1).trim().endsWith(',')
// TODO: Optimize me (https://github.com/nuxt/framework/pull/8529)
const endsWithComma = code.slice(codeIndex + (node as any).start, codeIndex + (node as any).end - 1).trim().endsWith(',')


s.appendLeft(
codeIndex + (node as any).end - 1,
(node.arguments.length ? ', ' : '') + "'$" + hash(`${relativeID}-${++count}`) + "'"
(node.arguments.length && !endsWithComma ? ', ' : '') + "'$" + hash(`${relativeID}-${++count}`) + "'"
)
}
})
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