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44 lines
1.4 KiB
44 lines
1.4 KiB
/**
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*
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* Utilities related to email normalization. Currently
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* trivial, but could potentially need special per-domain
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* rules in future.
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*
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* Email addresses are a bit slippery. Domain names are
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* case insensitive, but user names may or may not be,
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* depending on the mail server handling the domain.
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* Other special treatment of user names may also be in
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* place for particular domains (periods, plus sign, etc).
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*
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* We treat emails as case-insensitive for the purposes
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* of determining equality of emails, and indexing users
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* by email address.
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*
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*/
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/**
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*
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* Convert the supplied email address to a normalized form
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* that we will use for indexing and equality tests.
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* Many possible email addresses could map to the same
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* normalized result; as far as we are concerned those
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* addresses are equivalent.
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*
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* The normalization we do is a simple lowercase. This
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* means we won't be able to treat both Jane@x.y and
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* jane@x.y as separate email addresses, even through
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* they may in fact be separate mailboxes on x.y.
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*
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* The normalized email is not something we should show
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* the user in the UI, but is rather for internal purposes.
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*
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* The original non-normalized email is called a
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* "display email" to distinguish it from a "normalized
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* email"
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*
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*/
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export function normalizeEmail(displayEmail: string): string {
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// We take the lower case, without use of locale.
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return displayEmail.toLowerCase();
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}
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