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Easy inline web worker with Typescript
source link: https://gist.github.com/julianpoemp/1292445696eae2ea319d92ae15ecffa4
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Easy web worker with Typescript
This code makes use of two classes: TsWorker and TsWorkerJob. TsWorker initializes an inline worker and runs one job. The TsWorker class needs to be initialized with a function and the function's arguments as an array.
Example:
const tsWorker = new TsWorker();
// create a new job. You can create a sub class of TsWorker so that you don't have to add the function any time.
const tsJob: TsWorkerJob = new TsWorkerJob((args: any[]) => {
return new Promise<any>((resolve, reject) => {
// because args is an array you need to use indexes.
const time = args[0];
console.log(`caculate anything...`);
setTimeout(() => {
resolve(42);
}, time);
});
}, [3000]);
// run the job asynchronous
tsWorker.run(tsJob).then((ev: TsWorkerEvent) => {
// finished
const secondsLeft = (ev.statistics.ended - ev.statistics.started) / 1000;
console.log(`the result is ${ev.result}`);
console.log(`time left for calculation: ${secondsLeft}`);
}).catch((error) => {
// error
console.log(`error`);
console.error(error);
});
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