utils 1.18.0
Install from the command line:
Learn more about npm packages
$ npm install @planjs/utils@1.18.0
Install via package.json:
"@planjs/utils": "1.18.0"
About this version
🔧 contactInfoDefault doc
npm i @planjs/utils
import {
delay,
retry,
pTry,
sequenceChain,
nextTick,
range,
REG_TEL_PHONE,
eventCenter,
TimeoutMap,
} from '@planjs/utils';
// promise utils
async function main() {
await delay(100);
function fetchData() {
return Promise.reject(new Error('testing'));
}
await retry(fetchData, { maxAttempts: 3, delayMs: 500 })();
}
const pool = asyncPool({ maxConcurrency: 10 });
const randArr = range(1, 10);
nextTick(async () => {
const [err, res] = await pTry(main());
if (!err) {
console.log(res);
}
let start = Date.now();
await Promise.all(randArr.map((v) => pool.executor(delay(v))));
// The timer has an accuracy problem
if (Date.now() - start + 1 >= Math.max(...randArr)) {
console.log('concurrency');
}
const count = (a = 0) => ++a;
const val = await sequenceChain([...range(0, 10).map((v) => [count])])();
console.log(val); // 11
});
// commonly used regex
REG_TEL_PHONE.test('132xxxxxxx'); // false
// event center
eventCenter.on('log', console.log);
eventCenter.trigger('log', 'planjs');
// ext obj
const timeoutMap = new TimeoutMap({
timeout: 200,
passiveDeletion: true,
onTimeout(k, v) {
console.log(`expired key [${k}], val [${v}]`);
},
});
timeoutMap.set('name', 'fupengl');
delay(201).then(() => timeoutMap.get('name')); // null