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feat: Relax isValidBase64 to accept non-standard base64 subscription payloads #21

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Merged
Ayideyia merged 1 commit into from
Mar 1, 2026
Merged

feat: Relax isValidBase64 to accept non-standard base64 subscription payloads #21

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14 changes: 13 additions & 1 deletion frontend/src/utils/is.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -6,8 +6,20 @@ export const isValidBase64 = (str: string) => {
if (str === '' || str.trim() === '') {
return false
}

// Accept URL-safe base64 and ignore line breaks/spaces in subscription responses.
const normalized = str
.trim()
.replace(/\s+/g, '')
.replace(/-/g, '+')
.replace(/_/g, '/')

const padding = (4 - (normalized.length % 4)) % 4
const padded = normalized + '='.repeat(padding)

try {
return btoa(atob(str)) == str
atob(padded)
return true
} catch {
return false
}
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