40 lines
1.0 KiB
TypeScript
40 lines
1.0 KiB
TypeScript
/**
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* Basic helpers around email formatting shared across components and composables.
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*/
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/**
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* Normalises an email by trimming whitespace and converting it to lowercase.
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*/
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export const normalizeEmail = (rawValue: string): string => {
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const value = (rawValue || '').trim()
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return value.toLowerCase()
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}
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/**
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* Masks an email address by hiding the characters between the first and last letters
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* of the local part. Useful for UI fragments where we want partial obfuscation.
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*/
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export const maskEmail = (rawValue: string): string => {
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const value = normalizeEmail(rawValue)
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if (!value) {
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return ''
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}
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const parts = value.split('@')
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const localPart = parts[0] ?? ''
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const domain = parts[1]
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if (!domain || !localPart) {
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return value
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}
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if (localPart.length <= 2) {
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return `${localPart[0] ?? ''}·@${domain}`
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}
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const start = localPart[0] ?? ''
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const end = localPart.slice(-1)
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const masked = '·'.repeat(Math.max(0, localPart.length - 2))
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return `${start}${masked}${end}@${domain}`
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}
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