commit 4efbf851f75de2a9ae00451311d6e4f869991bf8 · kitten.sh/wonka

perf/package.json

···

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           "benchr": "^4.3.0"

     

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         },

     

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         "dependencies": {

     

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       +
           "wonka-v4": "npm:wonka@^4.0.0",

     

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           "most": "^1.7.3",

     

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           "rxjs": "^6.3.3"

     

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         }

+11

perf/suite.js

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       const Wonka = require('..');

     

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       const Wonka4 = require('wonka-v4');

     

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       const Rx = require('rxjs');

     

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       const RxOperators = require('rxjs/operators');

     

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       const most = require('most');

     
···

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             Wonka.filter(x => x > 4),

     

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             Wonka.scan((acc, x) => acc + x, 0),

     

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             Wonka.toPromise

     

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           );

     

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         });

     

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         benchmark('Wonka v4', () => {

     

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           return Wonka4.pipe(

     

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             Wonka4.fromArray(input),

     

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             Wonka4.map(x => x * 2),

     

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             Wonka4.filter(x => x > 4),

     

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             Wonka4.scan((acc, x) => acc + x, 0),

     

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             Wonka4.toPromise

     

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           );

     

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         });

     

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perf/yarn.lock

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         integrity sha1-8LDc+RW8X/FSivrbLA4XtTLaL+g=

     

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         dependencies:

     

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           defaults "^1.0.3"

     

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       "wonka-v4@npm:wonka@^4.0.0":

     

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         version "4.0.15"

     

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         resolved "https://registry.yarnpkg.com/wonka/-/wonka-4.0.15.tgz#9aa42046efa424565ab8f8f451fcca955bf80b89"

     

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         integrity sha512-U0IUQHKXXn6PFo9nqsHphVCE5m3IntqZNB9Jjn7EB1lrR7YTDY3YWgFvEvwniTzXSvOH/XMzAZaIfJF/LvHYXg==

src/__tests__/sources.test.ts

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           expect(signals).toEqual([start(expect.any(Function))]);

     

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           await Promise.resolve();

     

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           await promise;

     

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           await Promise.resolve();

     

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+65 -7

src/sources.ts

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       import { push, start, talkbackPlaceholder, teardownPlaceholder } from './helpers';

     

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       import { share } from './operators';

     

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       -
       export function fromArray<T>(array: T[]): Source<T> {

     

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       export function lazy<T>(make: () => Source<T>): Source<T> {

     

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         return sink => make()(sink);

     

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       }

     

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       export function fromAsyncIterable<T>(iterable: AsyncIterable<T>): Source<T> {

     

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         return sink => {

     

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           const iterator = iterable[Symbol.asyncIterator]();

     

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           let ended = false;

     

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           let looping = false;

     

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           let pulled = false;

     

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           let current = 0;

     

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           let next: IteratorResult<T>;

     

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           sink(

     

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       -
             start(signal => {

     

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             start(async signal => {

     

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               if (signal === TalkbackKind.Close) {

     

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                 ended = true;

     

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                 if (iterator.return) iterator.return();

     

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               } else if (looping) {

     

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                 pulled = true;

     

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               } else {

     

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                 for (pulled = looping = true; pulled && !ended; current++) {

     

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                   if (current < array.length) {

     

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                     pulled = false;

     

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                     sink(push(array[current]));

     

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                 for (pulled = looping = true; pulled && !ended; ) {

     

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                   if ((next = await iterator.next()).done) {

     

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                     ended = true;

     

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                     if (iterator.return) await iterator.return();

     

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                     sink(SignalKind.End);

     

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                   } else {

     

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                     try {

     

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                       pulled = false;

     

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                       sink(push(next.value));

     

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                     } catch (error) {

     

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                       if (iterator.throw) {

     

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                         if ((ended = !!(await iterator.throw(error)).done)) sink(SignalKind.End);

     

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                       } else {

     

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                         throw error;

     

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                       }

     

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                     }

     

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                   }

     

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                 }

     

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                 looping = false;

     

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               }

     

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             })

     

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           );

     

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         };

     

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       }

     

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       export function fromIterable<T>(iterable: Iterable<T> | AsyncIterable<T>): Source<T> {

     

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         if (iterable[Symbol.asyncIterator]) return fromAsyncIterable(iterable as AsyncIterable<T>);

     

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         return sink => {

     

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           const iterator = iterable[Symbol.iterator]();

     

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           let ended = false;

     

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           let looping = false;

     

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           let pulled = false;

     

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           let next: IteratorResult<T>;

     

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           sink(

     

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             start(signal => {

     

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               if (signal === TalkbackKind.Close) {

     

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                 ended = true;

     

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                 if (iterator.return) iterator.return();

     

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               } else if (looping) {

     

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                 pulled = true;

     

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               } else {

     

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                 for (pulled = looping = true; pulled && !ended; ) {

     

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                   if ((next = iterator.next()).done) {

     

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                     ended = true;

     

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                     if (iterator.return) iterator.return();

     

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                     sink(SignalKind.End);

     

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                   } else {

     

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                     try {

     

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                       pulled = false;

     

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                       sink(push(next.value));

     

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                     } catch (error) {

     

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                       if (iterator.throw) {

     

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                         if ((ended = !!iterator.throw(error).done)) sink(SignalKind.End);

     

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                       } else {

     

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                         throw error;

     

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                       }

     

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                     }

     

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                   }

     

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                 }

     

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                 looping = false;

     
···

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           );

     

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         };

     

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       }

     

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       export const fromArray: <T>(array: T[]) => Source<T> = fromIterable;

     

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       export function fromValue<T>(value: T): Source<T> {

     

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         return sink => {