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  "readme": "# babel-plugin-transform-es2015-for-of\n\n> Compile ES2015 for...of to ES5\n\n## Example\n\n**In**\n\n```js\nfor (var i of foo) {}\n```\n\n**Out**\n\n```js\nvar _iteratorNormalCompletion = true;\nvar _didIteratorError = false;\nvar _iteratorError = undefined;\n\ntry {\n  for (var _iterator = foo[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n    var i = _step.value;\n  }\n} catch (err) {\n  _didIteratorError = true;\n  _iteratorError = err;\n} finally {\n  try {\n    if (!_iteratorNormalCompletion && _iterator.return) {\n      _iterator.return();\n    }\n  } finally {\n    if (_didIteratorError) {\n      throw _iteratorError;\n    }\n  }\n}\n```\n\n## Installation\n\n```sh\nnpm install --save-dev babel-plugin-transform-es2015-for-of\n```\n\n## Usage\n\n### Via `.babelrc` (Recommended)\n\n**.babelrc**\n\n```js\n// without options\n{\n  \"plugins\": [\"transform-es2015-for-of\"]\n}\n\n// with options\n{\n  \"plugins\": [\n    [\"transform-es2015-for-of\", {\n      \"loose\": true\n    }]\n  ]\n}\n```\n\n### Via CLI\n\n```sh\nbabel --plugins transform-es2015-for-of script.js\n```\n\n### Via Node API\n\n```javascript\nrequire(\"babel-core\").transform(\"code\", {\n  plugins: [\"transform-es2015-for-of\"]\n});\n```\n\n## Options\n\n### `loose`\n\n`boolean`, defaults to `false`\n\nIn loose mode, arrays are put in a fast path, thus heavily increasing performance.\nAll other iterables will continue to work fine.\n\n#### Example\n\n**In**\n\n```js\nfor (var i of foo) {}\n```\n\n**Out**\n\n```js\nfor (var _iterator = foo, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {\n  var _ref;\n\n  if (_isArray) {\n    if (_i >= _iterator.length) break;\n    _ref = _iterator[_i++];\n  } else {\n    _i = _iterator.next();\n    if (_i.done) break;\n    _ref = _i.value;\n  }\n\n  var i = _ref;\n}\n```\n\n#### Abrupt completions\n\nIn loose mode an iterator's `return` method will not be called on abrupt completions caused by thrown errors.\n\nPlease see [google/traceur-compiler#1773](https://github.com/google/traceur-compiler/issues/1773) and\n[babel/babel#838](https://github.com/babel/babel/issues/838) for more information.\n\n### Optimization\n\nIf a basic array is used, Babel will compile the for-of loop down to a regular for loop.\n\n**In**\n\n```js\nfor (let a of [1,2,3]) {}\n```\n\n**Out**\n\n```js\nvar _arr = [1, 2, 3];\nfor (var _i = 0; _i < _arr.length; _i++) {\n  var a = _arr[_i];\n}\n```\n",
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