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interface PostData {
userId: number
id: number
title: string
body: string
}
const doSleep = (ms: number) => new Promise((r) => setTimeout(r, ms))
export const fetchPost = async ({
postId,
simulateError,
sleep,
}: {
postId: number
simulateError?: boolean
sleep?: number
}) => {
console.info('[api] fetchPost.start', { postId, sleep, simulateError })
let response
if (!simulateError) {
response = await fetch(
`https://jsonplaceholder.typicode.com/posts/${postId}`,
).then((res) => res.json())
}
// simulate extra latency to make things like streaming behavior more clear
if (sleep) {
await doSleep(sleep)
}
console.info('[api] fetchPost.done', { postId, sleep, simulateError })
if (simulateError) {
throw new Error('API request to get post was not OK')
}
return [response] as PostData[]
}
export const fetchUser = async ({
sleep,
simulateError,
}: { sleep?: number; simulateError?: boolean } = {}) => {
console.info('[api] fetchUser.start', { sleep, simulateError })
if (sleep) {
await doSleep(sleep)
}
console.info('[api] fetchUser.done', { sleep, simulateError })
if (simulateError) {
throw new Error('API request to get user was not OK')
}
return {
id: 'abc',
name: `john doe`,
queryTime: Date.now(),
}
}
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