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  "readme": "# JavaScript Sync/Async forEach\n\nAn optionally-asynchronous forEach with an interesting interface.\n\n## Getting Started\n\nThis code should work just fine in Node.js:\n\nFirst, install the module with: `npm install async-foreach`\n\n```javascript\nvar forEach = require('async-foreach').forEach;\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n});\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// each c 2 [\"a\", \"b\", \"c\"]\n```\n\nOr in the browser:\n\n```html\n<script src=\"dist/ba-foreach.min.js\"></script>\n<script>\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n});\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// each c 2 [\"a\", \"b\", \"c\"]\n</script>\n```\n\nIn the browser, you can attach the forEach method to any object.\n\n```html\n<script>\nthis.exports = Bocoup.utils;\n</script>\n<script src=\"dist/ba-foreach.min.js\"></script>\n<script>\nBocoup.utils.forEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n});\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// each c 2 [\"a\", \"b\", \"c\"]\n</script>\n```\n\n## The General Idea (Why I thought this was worth sharing)\n\nThe idea is to allow the callback to decide _at runtime_ whether the loop will be synchronous or asynchronous. By using `this` in a creative way (in situations where that value isn't already spoken for), an entire control API can be offered without over-complicating function signatures.\n\n```javascript\nforEach(arr, function(item, index) {\n  // Synchronous.\n});\n\nforEach(arr, function(item, index) {\n  // Only when `this.async` is called does iteration becomes asynchronous. The\n  // loop won't be continued until the `done` function is executed.\n  var done = this.async();\n  // Continue in one second.\n  setTimeout(done, 1000);\n});\n\nforEach(arr, function(item, index) {\n  // Break out of synchronous iteration early by returning false.\n  return index !== 1;\n});\n\nforEach(arr, function(item, index) {\n  // Break out of asynchronous iteration early...\n  var done = this.async();\n  // ...by passing false to the done function.\n  setTimeout(function() {\n    done(index !== 1);\n  });\n});\n```\n\n## Examples\nSee the unit tests for more examples.\n\n```javascript\n// Generic \"done\" callback.\nfunction allDone(notAborted, arr) {\n  console.log(\"done\", notAborted, arr);\n}\n\n// Synchronous.\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n}, allDone);\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// each c 2 [\"a\", \"b\", \"c\"]\n// done true [\"a\", \"b\", \"c\"]\n\n// Synchronous with early abort.\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n  if (item === \"b\") { return false; }\n}, allDone);\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// done false [\"a\", \"b\", \"c\"]\n\n// Asynchronous.\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n  var done = this.async();\n  setTimeout(function() {\n    done();\n  }, 500);\n}, allDone);\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// each c 2 [\"a\", \"b\", \"c\"]\n// done true [\"a\", \"b\", \"c\"]\n\n// Asynchronous with early abort.\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n  var done = this.async();\n  setTimeout(function() {\n    done(item !== \"b\");\n  }, 500);\n}, allDone);\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// done false [\"a\", \"b\", \"c\"]\n\n// Not actually asynchronous.\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n  var done = this.async()\n  done();\n}, allDone);\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// each c 2 [\"a\", \"b\", \"c\"]\n// done true [\"a\", \"b\", \"c\"]\n\n// Not actually asynchronous with early abort.\nforEach([\"a\", \"b\", \"c\"], function(item, index, arr) {\n  console.log(\"each\", item, index, arr);\n  var done = this.async();\n  done(item !== \"b\");\n}, allDone);\n// logs:\n// each a 0 [\"a\", \"b\", \"c\"]\n// each b 1 [\"a\", \"b\", \"c\"]\n// done false [\"a\", \"b\", \"c\"]\n```\n\n## Contributing\nIn lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using [grunt](https://github.com/cowboy/grunt).\n\n_Also, please don't edit files in the \"dist\" subdirectory as they are generated via grunt. You'll find source code in the \"lib\" subdirectory!_\n\n## Release History\n\n04/29/2013\nv0.1.3\nRemoved hard Node.js version dependency.\n\n11/17/2011\nv0.1.2\nAdding sparse array support.\nInvalid length properties are now sanitized.\nThis closes issue #1 (like a boss).\n\n11/11/2011\nv0.1.1\nRefactored code to be much simpler. Yay for unit tests!\n\n11/11/2011\nv0.1.0\nInitial Release.\n\n## License\nCopyright (c) 2012 \"Cowboy\" Ben Alman  \nLicensed under the MIT license.  \n<http://benalman.com/about/license/>\n",
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