@modern-js/plugin
Version:
A Progressive React Framework for modern web development.
36 lines (35 loc) • 1.12 kB
JavaScript
import { createAsyncPipeline } from "../farrow-pipeline";
const ASYNC_WORKFLOW_SYMBOL = Symbol.for("MODERN_ASYNC_WORKFLOW");
const isPromise = (obj) => obj && typeof obj.then === "function";
const isAsyncWorkflow = (input) => Boolean(input === null || input === void 0 ? void 0 : input[ASYNC_WORKFLOW_SYMBOL]);
const createAsyncWorkflow = () => {
const pipeline = createAsyncPipeline();
const use = (...input) => {
pipeline.use(...input.map(mapAsyncWorkerToAsyncMiddleware));
return workflow;
};
const run = (input) => {
const result = pipeline.run(input, {
onLast: () => []
});
if (isPromise(result)) {
return result.then((result2) => result2.filter(Boolean));
}
return result.filter(Boolean);
};
const workflow = {
...pipeline,
use,
run,
[ASYNC_WORKFLOW_SYMBOL]: true
};
return workflow;
};
const mapAsyncWorkerToAsyncMiddleware = (worker) => (input, next) => Promise.resolve(worker(input)).then((result) => Promise.resolve(next(input)).then((nextResult) => [
result,
...nextResult
]));
export {
createAsyncWorkflow,
isAsyncWorkflow
};