19 lines
473 B
TypeScript
19 lines
473 B
TypeScript
export function getDeviceId(): string {
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const KEY = 'device-id';
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let id = localStorage.getItem(KEY);
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if (!id) {
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id = genId();
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localStorage.setItem(KEY, id);
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}
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return id;
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}
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function genId() {
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// Simple UUID v4-ish generator
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return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
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const r = (crypto.getRandomValues(new Uint8Array(1))[0] & 0xf) >> 0;
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const v = c === 'x' ? r : (r & 0x3) | 0x8;
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return v.toString(16);
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});
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}
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