{"id":18537928,"url":"https://github.com/easywebapp/iterable-observer","last_synced_at":"2026-03-04T05:33:04.840Z","repository":{"id":57278440,"uuid":"142932141","full_name":"EasyWebApp/iterable-observer","owner":"EasyWebApp","description":"Observable Proposal implement based on Async Generator (ES 2018) \u0026 TypeScript","archived":false,"fork":false,"pushed_at":"2024-08-16T17:53:00.000Z","size":469,"stargazers_count":6,"open_issues_count":1,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-03-25T11:48:01.794Z","etag":null,"topics":["async","generator","iterator","observable","observer","proposal"],"latest_commit_sha":null,"homepage":"https://web-cell.dev/iterable-observer/","language":"TypeScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/EasyWebApp.png","metadata":{"files":{"readme":"ReadMe.md","changelog":null,"contributing":null,"funding":".github/FUNDING.yml","license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null},"funding":{"custom":["https://paypal.me/TechQuery","https://tech-query.me/image/TechQuery-Alipay.jpg"]}},"created_at":"2018-07-30T21:56:20.000Z","updated_at":"2024-08-16T17:51:27.000Z","dependencies_parsed_at":"2024-06-19T16:24:56.091Z","dependency_job_id":"c8daddfe-7276-4231-b023-b13739fc553d","html_url":"https://github.com/EasyWebApp/iterable-observer","commit_stats":null,"previous_names":[],"tags_count":4,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/EasyWebApp%2Fiterable-observer","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/EasyWebApp%2Fiterable-observer/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/EasyWebApp%2Fiterable-observer/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/EasyWebApp%2Fiterable-observer/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/EasyWebApp","download_url":"https://codeload.github.com/EasyWebApp/iterable-observer/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":248078351,"owners_count":21044094,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["async","generator","iterator","observable","observer","proposal"],"created_at":"2024-11-06T19:41:17.144Z","updated_at":"2026-03-04T05:33:04.780Z","avatar_url":"https://github.com/EasyWebApp.png","language":"TypeScript","funding_links":["https://paypal.me/TechQuery","https://tech-query.me/image/TechQuery-Alipay.jpg"],"categories":[],"sub_categories":[],"readme":"# Iterable Observer\n\n[Observable Proposal][1] implement based on [Async Generator (ES 2018)][2] \u0026 [TypeScript][3]\n\n[![NPM Dependency](https://img.shields.io/librariesio/github/EasyWebApp/iterable-observer.svg)][4]\n[![CI \u0026 CD](https://github.com/EasyWebApp/iterable-observer/actions/workflows/main.yml/badge.svg)][5]\n[![](https://data.jsdelivr.com/v1/package/npm/iterable-observer/badge?style=rounded)][6]\n\n[![NPM](https://nodei.co/npm/iterable-observer.png?downloads=true\u0026downloadRank=true\u0026stars=true)][7]\n\n## Usage\n\n### Basic\n\n```javascript\nimport { Observable } from 'iterable-observer';\n\nvar count = 0,\n    list = [];\n\nconst observable = new Observable(({ next, complete }) =\u003e {\n    const timer = setInterval(\n        () =\u003e (++count \u003c 5 ? next(count) : complete(count)),\n        0\n    );\n    return () =\u003e clearInterval(timer);\n});\n\n(async () =\u003e {\n    for await (const item of observable) list.push(item);\n\n    console.log(list); // [1, 2, 3, 4, 5]\n})();\n```\n\n### Enhance Run-time platforms\n\n#### Transform events\n\n```javascript\nimport { Observable } from 'iterable-observer';\n\nconst reader = new FileReader(),\n    { files } = document.querySelector('input[type=\"file\"]');\n\nreader.readAsBlob(files[0]);\n\n(async () =\u003e {\n    for await (const { loaded } of Observable.fromEvent(reader, 'progress'))\n        console.log((loaded / file.size) * 100 + '%');\n})();\n```\n\n#### Transform streams\n\n```typescript\nimport { Observable } from 'iterable-observer';\n\n(async () =\u003e {\n    const { body } = await fetch('https://example.com/path/to/blob'),\n        chunks: Uint8Array[] = [];\n\n    for await (const chunk of Observable.fromStream(body)) chunks.push(chunk);\n\n    const blob = new Blob(chunks);\n\n    console.log(blob);\n}();\n```\n\n### Concurrent Task to Serial Queue\n\n```javascript\nimport { createQueue } from 'iterable-observer';\nimport Koa from 'koa';\nimport BodyParser from 'koa-bodyparser';\n\nconst { process, observable } = createQueue(),\n    app = new Koa();\n\n(async () =\u003e {\n    for await (const { defer, data } of observable)\n        defer.resolve(JSON.stringify(data));\n})();\n\napp.use(BodyParser)\n    .use(async context =\u003e (context.body = await process(context.request.body)))\n    .listen(80);\n```\n\n[1]: https://github.com/tc39/proposal-observable\n[2]: https://tc39.es/ecma262/#sec-asyncgeneratorfunction-objects\n[3]: https://www.typescriptlang.org/\n[4]: https://libraries.io/npm/iterable-observer\n[5]: https://github.com/EasyWebApp/iterable-observer/actions/workflows/main.yml\n[6]: https://www.jsdelivr.com/package/npm/iterable-observer\n[7]: https://nodei.co/npm/iterable-observer/\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feasywebapp%2Fiterable-observer","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Feasywebapp%2Fiterable-observer","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feasywebapp%2Fiterable-observer/lists"}