77 lines
2.5 KiB
JavaScript
77 lines
2.5 KiB
JavaScript
import * as Context from "../Context.js";
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import * as Duration from "../Duration.js";
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import { constFalse } from "../Function.js";
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import * as core from "./core.js";
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/** @internal */
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const ClockSymbolKey = "effect/Clock";
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/** @internal */
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export const ClockTypeId = /*#__PURE__*/Symbol.for(ClockSymbolKey);
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/** @internal */
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export const clockTag = /*#__PURE__*/Context.GenericTag("effect/Clock");
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/** @internal */
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export const MAX_TIMER_MILLIS = 2 ** 31 - 1;
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/** @internal */
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export const globalClockScheduler = {
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unsafeSchedule(task, duration) {
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const millis = Duration.toMillis(duration);
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// If the duration is greater than the value allowable by the JS timer
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// functions, treat the value as an infinite duration
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if (millis > MAX_TIMER_MILLIS) {
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return constFalse;
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}
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let completed = false;
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const handle = setTimeout(() => {
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completed = true;
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task();
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}, millis);
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return () => {
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clearTimeout(handle);
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return !completed;
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};
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}
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};
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const performanceNowNanos = /*#__PURE__*/function () {
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const bigint1e6 = /*#__PURE__*/BigInt(1_000_000);
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if (typeof performance === "undefined") {
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return () => BigInt(Date.now()) * bigint1e6;
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}
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let origin;
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return () => {
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if (origin === undefined) {
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origin = BigInt(Date.now()) * bigint1e6 - BigInt(Math.round(performance.now() * 1_000_000));
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}
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return origin + BigInt(Math.round(performance.now() * 1000000));
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};
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}();
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const processOrPerformanceNow = /*#__PURE__*/function () {
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const processHrtime = typeof process === "object" && "hrtime" in process && typeof process.hrtime.bigint === "function" ? process.hrtime : undefined;
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if (!processHrtime) {
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return performanceNowNanos;
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}
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const origin = /*#__PURE__*/performanceNowNanos() - /*#__PURE__*/processHrtime.bigint();
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return () => origin + processHrtime.bigint();
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}();
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/** @internal */
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class ClockImpl {
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[ClockTypeId] = ClockTypeId;
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unsafeCurrentTimeMillis() {
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return Date.now();
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}
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unsafeCurrentTimeNanos() {
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return processOrPerformanceNow();
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}
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currentTimeMillis = /*#__PURE__*/core.sync(() => this.unsafeCurrentTimeMillis());
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currentTimeNanos = /*#__PURE__*/core.sync(() => this.unsafeCurrentTimeNanos());
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scheduler() {
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return core.succeed(globalClockScheduler);
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}
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sleep(duration) {
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return core.async(resume => {
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const canceler = globalClockScheduler.unsafeSchedule(() => resume(core.void), duration);
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return core.asVoid(core.sync(canceler));
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});
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}
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}
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/** @internal */
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export const make = () => new ClockImpl();
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//# sourceMappingURL=clock.js.map
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