32 lines
834 B
TypeScript
32 lines
834 B
TypeScript
// Copyright 2018-2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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export function getInitials(name?: string): string | undefined {
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if (!name) {
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return undefined;
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}
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const parsedName = name
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// remove all chars that are not letters or separators
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.replace(/[^\p{L}\p{Z}]+/gu, '')
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// replace all chars that are separators with a single ASCII space
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.replace(/\p{Z}+/gu, ' ')
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.trim();
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if (!parsedName) {
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return undefined;
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}
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// check if chars in the parsed string are initials
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if (parsedName.length === 2 && parsedName === parsedName.toUpperCase()) {
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return parsedName;
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}
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const parts = parsedName.toUpperCase().split(' ');
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const partsLen = parts.length;
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return partsLen === 1
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? parts[0].charAt(0)
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: parts[0].charAt(0) + parts[partsLen - 1].charAt(0);
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}
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