msw
Version:
51 lines • 1.86 kB
JavaScript
import { isNodeProcess } from "is-node-process";
const SET_TIMEOUT_MAX_ALLOWED_INT = 2147483647;
const MIN_SERVER_RESPONSE_TIME = 100;
const MAX_SERVER_RESPONSE_TIME = 400;
const NODE_SERVER_RESPONSE_TIME = 5;
function getRealisticResponseTime() {
if (isNodeProcess()) {
return NODE_SERVER_RESPONSE_TIME;
}
return Math.floor(
Math.random() * (MAX_SERVER_RESPONSE_TIME - MIN_SERVER_RESPONSE_TIME) + MIN_SERVER_RESPONSE_TIME
);
}
async function delay(durationOrMode) {
let delayTime;
if (typeof durationOrMode === "string") {
switch (durationOrMode) {
case "infinite": {
delayTime = SET_TIMEOUT_MAX_ALLOWED_INT;
break;
}
case "real": {
delayTime = getRealisticResponseTime();
break;
}
default: {
throw new Error(
`Failed to delay a response: unknown delay mode "${durationOrMode}". Please make sure you provide one of the supported modes ("real", "infinite") or a number.`
);
}
}
} else if (typeof durationOrMode === "undefined") {
delayTime = getRealisticResponseTime();
} else {
if (durationOrMode > SET_TIMEOUT_MAX_ALLOWED_INT) {
throw new Error(
`Failed to delay a response: provided delay duration (${durationOrMode}) exceeds the maximum allowed duration for "setTimeout" (${SET_TIMEOUT_MAX_ALLOWED_INT}). This will cause the response to be returned immediately. Please use a number within the allowed range to delay the response by exact duration, or consider the "infinite" delay mode to delay the response indefinitely.`
);
}
delayTime = durationOrMode;
}
return new Promise((resolve) => setTimeout(resolve, delayTime));
}
export {
MAX_SERVER_RESPONSE_TIME,
MIN_SERVER_RESPONSE_TIME,
NODE_SERVER_RESPONSE_TIME,
SET_TIMEOUT_MAX_ALLOWED_INT,
delay
};
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