{"id":28222815,"url":"https://github.com/warlock/snc","last_synced_at":"2025-07-27T10:39:25.244Z","repository":{"id":57364682,"uuid":"63969831","full_name":"warlock/snc","owner":"warlock","description":"Asyncronous Iterators Collection","archived":false,"fork":false,"pushed_at":"2020-08-04T09:03:04.000Z","size":131,"stargazers_count":7,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-05-18T07:14:12.299Z","etag":null,"topics":["async","async-await","asyncronous-iterators-collection","callback","iterator","javascript","loop","parallel","routines","waterfall"],"latest_commit_sha":null,"homepage":"https://snc.js.gl","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/warlock.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2016-07-22T17:03:14.000Z","updated_at":"2020-08-26T09:40:50.000Z","dependencies_parsed_at":"2022-09-13T21:01:10.859Z","dependency_job_id":null,"html_url":"https://github.com/warlock/snc","commit_stats":null,"previous_names":[],"tags_count":2,"template":false,"template_full_name":null,"purl":"pkg:github/warlock/snc","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/warlock%2Fsnc","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/warlock%2Fsnc/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/warlock%2Fsnc/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/warlock%2Fsnc/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/warlock","download_url":"https://codeload.github.com/warlock/snc/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/warlock%2Fsnc/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":259316556,"owners_count":22839521,"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","async-await","asyncronous-iterators-collection","callback","iterator","javascript","loop","parallel","routines","waterfall"],"created_at":"2025-05-18T07:14:04.874Z","updated_at":"2025-06-11T18:30:37.513Z","avatar_url":"https://github.com/warlock.png","language":"JavaScript","readme":"snc\n===\n\u003e Asyncronous Iterators Collection\n\nhttp://snc.js.gl\n\n## INSTALL/DOWNLOAD\nhttp://npmjs.com/package/snc\n\n```sh\nnpm install snc\n```\n\n## Node.Js : Import module:\n```javascript\nconst snc = require(\"snc\")\n```\n\n## Web : Import module:\n```html\n\u003cscript src=\"snc/snc.js\"\u003e\u003c/script\u003e\n```\n\n# Http CDN\n* [https://cdn.jsdelivr.net/npm/snc@latest](https://cdn.jsdelivr.net/npm/snc@latest)\n* [https://raw.githubusercontent.com/warlock/snc/master/snc.js](https://raw.githubusercontent.com/warlock/snc/master/snc.js)\n* [https://unpkg.com/snc](https://unpkg.com/snc)\n\n**snc.each(array, callback_loop(item, index, next_method, end_method), callback_end)**\n\nRuns next function when \"next\" method is executed.\n```javascript\nconst list = ['a', 'b', 'c']\n\nsnc.each(list, (item, index, next, end) =\u003e {\n  console.log(`item: ${item}`)\n  setTimeout(next, 3000)\n}, () =\u003e {\n  console.log(`End`)\n})\n```\n```\n-\u003e item: a // Wait 3 seconds\n-\u003e item: b // Wait 3 seconds\n-\u003e item: c // Wait 3 seconds\n-\u003e End\n```\n\nCall \"end\" method for break the loop.\n```javascript\nconst list = ['a', 'b', 'c']\n\nsnc.each(list, (item, index, next, end) =\u003e {\n  console.log(`item: ${item}`)\n  setTimeout(() =\u003e {\n    if (index === 1) end(`Bye!`)\n    else next()\n  }, 3000)\n}, data =\u003e {\n  if (data) console.log(`End: ${data}`)\n  else console.log(`End`)\n})\n```\n```\n-\u003e item: a // Wait 3 seconds\n-\u003e item: b // Wait 3 seconds\n-\u003e End: Bye!\n```\n\n**snc.eachParallelLimit(array, number_limit, callback_loop(item, index, next_method), callback_end)**\n\nRuns in parallel limit and next loop when \"next\" method is executed. Alternative names: eachpl, epl.\n```javascript\nconst list = ['a', 'b', 'c', 'd']\nsnc.epl(list, 2, (item, index, next) =\u003e {\n  console.log(`item: ${item}`)\n  setTimeout(next, 2000)\n}, () =\u003e {\n  console.log(`End`)\n})\n```\n```\n-\u003e item: a\n-\u003e item: b\n-\u003e item: c // Next to start when next method executed\n-\u003e item: d // Next to start when next method executed\n-\u003e End\n```\n\n**snc.waterfall(array_functions(done, data), callback_end)**\n\nRuns next function when \"done\" method is executed.\nAlternative name: wf.\n```javascript\nsnc.waterfall([\n  done =\u003e {\n    console.log(`fire`)\n    done(5)\n  },\n  (done, data) =\u003e {\n    console.log(`ice: ${data}`)\n    done(`win`)\n  }\n], data =\u003e {\n  console.log(`End: ${data}`)\n})\n```\n```\n-\u003e fire\n-\u003e ice: 5\n-\u003e End: win\n```\n\nBreak the waterfall with \"true\".\n```javascript\nsnc.wf([\n  done =\u003e {\n    console.log(`fire`)\n    done(true, 5)\n  },\n  (done, data) =\u003e {\n    console.log(`ice: ${data}`)\n    done(`win`)\n  }\n], data =\u003e {\n  console.log(`End: ${data}`)\n})\n```\n```\n-\u003e fire\n-\u003e End: 5\n```\n\n\n**snc.parallel(array_functions(done), callback_end(data))**\n\nRun functions in parallel and then execute \"callback_end\".\nAlternative name: p.\n\n```javascript\nsnc.parallel([\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(`hi 3!`)\n      done(`a`)\n    }, 3000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(`hi 2!`)\n      done(`b`)\n    }, 2000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(`hi 1!`)\n      done(`c`)\n    }, 1000)\n  }\n],data =\u003e {\n  console.log(`End: ${JSON.stringify(data)}`)\n})\n```\n```\n//Wait 1 second\n-\u003e hi 1! //Wait 1 second\n-\u003e hi 2! //Wait 1 second\n-\u003e hi 3!\n-\u003e End: [\"a\",\"b\",\"c\"]\n```\n\n**snc.parallelLimit(number, array_functions(done), callback_end(data))**\n\nRun limit of functions in parallel and then execute \"callback_end\". Alternative name : pl\n```javascript\nsnc.pl(2, [\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 1!\")\n      done(\"a\")\n    }, 1000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 2!\")\n      done(\"b\")\n    }, 3000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 3!\")\n      done(\"c\")\n    }, 1000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 4!\")\n      done(\"a2\")\n    }, 3000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 5!\")\n      done(\"b2\")\n    }, 1000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 6!\")\n      done(\"c2\")\n   }, 3000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 7!\")\n      done(\"a3\")\n    }, 1000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n      console.log(\"go 8!\")\n      done(\"b3\")\n    }, 3000)\n  },\n  done =\u003e {\n    setTimeout(() =\u003e {\n       console.log(\"go 9!\")\n       done(\"c3\")\n    }, 1000)\n  }\n],data =\u003e {\n  console.log(`we: ${JSON.stringify(data)}`)\n})\n```\n```\n-\u003e go 1!\n-\u003e go 3!\n-\u003e go 2!\n-\u003e go 5!\n-\u003e go 4!\n-\u003e go 7!\n-\u003e go 6!\n-\u003e go 9!\n-\u003e go 8!\n-\u003e we: [\"a\",\"b\",\"c\",\"a2\",\"b2\",\"c2\",\"a3\",\"b3\",\"c3\"]\n```\n\n**snc.forever(callback(repeat, end), callback_end)**\n\nLoops syncronous forever.\nAlternative name: fe.\n\n```javascript\nsnc.forever((repeat, end) =\u003e {\n  console.log(`Hi!`)\n  setTimeout(repeat, 3000)\n})\n```\n```\n-\u003e Hi! // Wait 3 seconds\n-\u003e Hi! // Wait 3 seconds\n-\u003e ...\n```\n\nBreaking forever loop.\n```javascript\nconst i = 0\nsnc.fe((repeat, end) =\u003e {\n  console.log(`loop: ${i}`)\n  if (i\u003e=3) end(`Now Break!!!`)\n  i++\n  setTimeout(repeat, 3000)\n}, data =\u003e {\n  console.log(`Response: ${data}`)\n})\n```\n```\n-\u003e loop: 0 // Wait 3 seconds\n-\u003e loop: 1 // Wait 3 seconds\n-\u003e loop: 2 // Wait 3 seconds\n-\u003e loop: 3 // Wait 3 seconds\n-\u003e Response: Now Break!!\n```\n\n**snc.foreverParallel(limit, callback(counter, done), callback_end(data))**\n\nForever loop with parallel limit.\nAlternative name: fp.\n\n```javascript\nsnc.fp(2, (counter, done, end) =\u003e {\n  console.log(counter)\n  if (counter \u003c 6 ) {\n    setTimeout(() =\u003e {\n      done()\n    }, 3000)\n  } else end('bye!')\n},\ndata =\u003e {\n  console.log(`END: ${data}`)\n})\n```\n\n```\n-\u003e 1\n-\u003e 2\n-\u003e 3 // Wait 3 seconds\n-\u003e 4 // Wait 3 seconds\n-\u003e 5 // Wait 6 seconds\n-\u003e 6 // Wait 6 seconds\n-\u003e 7 // Wait 9 seconds\n-\u003e END: bye bye! // Wait 9 seconds\n```\n\n**snc.times(number, callback(index, next, end), end)**\n\nIterates function \"number\" times.\n```javascript\nsnc.times(5, (index, next, end) =\u003e {\n  console.log(`Iterator ${index}`)\n  next()\n},\n() =\u003e {\n  console.log('End')\n})\n```\n```\n-\u003e Iterator 0\n-\u003e Iterator 1\n-\u003e Iterator 2\n-\u003e Iterator 3\n-\u003e Iterator 4\n-\u003e End\n```\n\n**snc.for(initial, final, increment, callback(index, next, end), callback_end(data))**\n\nSyncronous \"for\" iterator.\nAlternative name: forSync.\n\n```javascript\nsnc.for(0, 10, 1, (index, next, end) =\u003e {\n  console.log(index)\n  setTimeout(() =\u003e {\n    next(5)\n  }, 1000)\n}, data =\u003e {\n  console.log(`LENGTH: ${data.length} -\u003e ${JSON.stringify(data)}`)\n})\n```\n```\n-\u003e 0\n-\u003e 1\n-\u003e 2\n-\u003e 3\n-\u003e 4\n-\u003e 5\n-\u003e 6\n-\u003e 7\n-\u003e 8\n-\u003e 9\n-\u003e LENGTH: 10 -\u003e [5,5,5,5,5,5,5,5,5,5]\n```\n\n```javascript\nsnc.for(1, 10, 2, (index, next, end) =\u003e {\n  console.log(index)\n  setTimeout(() =\u003e {\n    next(index)\n  }, 1000)\n}, data =\u003e {\n  console.log(data)\n})\n```\n```\n-\u003e 1\n-\u003e 3\n-\u003e 5\n-\u003e 7\n-\u003e 9\n-\u003e [ 1, 3, 5, 7, 9 ]\n```\n\n**snc.all(array, callback(element, done))**\n\nExecute all elements in array in parallel. And get all responses in order.\nAlternative name: map.\n\n```javascript\nsnc.all([3,2,1], (element, index, done) =\u003e {\n  setTimeout(() =\u003e {\n    console.log(element)\n    done(element)\n  }, element * 1000)\n},\nres =\u003e {\n  console.log(`Reponse: ${JSON.stringify(res)}`)\n})\n```\n\n```\n-\u003e 1\n-\u003e 2\n-\u003e 3\n-\u003e [3,2,1]\n```\n\n**snc.now(function, callback(data))**\n\nExecute now and then execute callback.\n\n```javascript\nsnc.now(then =\u003e {\n  console.log('Now')\n\n  setTimeout(() =\u003e {\n    then('End...')\n  }, 3000)\n},\nres =\u003e {\n  console.log(`Reponse: ${JSON.stringify(res)}`)\n})\n```\n\n```\n-\u003e Now\n-\u003e Response: \"End...\"\n```\n\n**snc.interval(function, end(data))**\n\nExecute in time intervals and break with end function.\n\n```javascript\nvar i = 0\nsnc.interval(2000, end =\u003e {\n  console.log(`Executed: ${new Date()}`)\n  i++\n  if (i === 3) end('Bye bye')\n},\nres =\u003e {\n  console.log(`End: ${res}`)\n})\n```\n\n```\n-\u003e Executed: Thu Feb 01 2018 13:54:27 GMT+0100 (CET)\n-\u003e Executed: Thu Feb 01 2018 13:54:29 GMT+0100 (CET)\n-\u003e Executed: Thu Feb 01 2018 13:54:31 GMT+0100 (CET)\n-\u003e Response: \"End...\"\n```\n\n\n\n## License\nAll the code here is under MIT license. Which means you could do virtually anything with the code.\nI will appreciate it very much if you keep an attribution where appropriate.\n\nThe MIT License (MIT)\nCopyright (c) 2015 Josep Subils (js@js.gl)\n\nPermission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the \"Software\"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fwarlock%2Fsnc","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fwarlock%2Fsnc","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fwarlock%2Fsnc/lists"}