39 lines
996 B
TypeScript
39 lines
996 B
TypeScript
/**
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* Returns true if the client is a touch device.
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*/
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export function isTouchDevice(): boolean {
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if (typeof window === "undefined") {
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return false;
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}
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return window.matchMedia?.("(hover: none) and (pointer: coarse)")?.matches;
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}
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/**
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* Returns true if the client is running on a Mac.
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*/
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export function isMac(): boolean {
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const SSR = typeof window === "undefined";
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return !SSR && window.navigator.platform === "MacIntel";
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}
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let supportsPassive = false;
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try {
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const opts = Object.defineProperty({}, "passive", {
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get() {
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supportsPassive = true;
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},
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});
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// @ts-expect-error ts-migrate(2769) testPassive is not a real event
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window.addEventListener("testPassive", null, opts);
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// @ts-expect-error ts-migrate(2769) testPassive is not a real event
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window.removeEventListener("testPassive", null, opts);
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} catch (e) {
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// No-op
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}
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/**
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* Returns true if the client supports passive event listeners
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*/
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export const supportsPassiveListener = supportsPassive;
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