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[`any-promise`](https://github.com/kevinbeaty/any-promise).\n\n- Preserves function names\n- Uses a native promise implementation if available and tries to fall back to a promise implementation such as `bluebird`\n- Converts multiple arguments from the callback into an `Array`, also support change the behavior by `options.multiArgs`\n- Resulting function never deoptimizes\n- Supports both callback and promise style\n\nAn added benefit is that `throw`n errors in that async function will be caught by the promise!\n\n## API\n\n### fn = thenify(fn, options)\n\nPromisifies a function.\n\n### Options\n\n`options` are optional.\n\n- `options.withCallback` - support both callback and promise style, default to `false`.\n- `options.multiArgs` - change the behavior when callback have multiple arguments. default to `true`.\n  - `true` - converts multiple arguments to an array\n  - `false`- always use the first argument\n  - `Array` - converts multiple arguments to an object with keys provided in `options.multiArgs`\n\n- Turn async functions into promises\n\n```js\nvar thenify = require('thenify');\n\nvar somethingAsync = thenify(function somethingAsync(a, b, c, callback) {\n  callback(null, a, b, c);\n});\n```\n\n- Backward compatible with callback\n\n```js\nvar thenify = require('thenify');\n\nvar somethingAsync = thenify(function somethingAsync(a, b, c, callback) {\n  callback(null, a, b, c);\n}, { withCallback: true });\n\n// somethingAsync(a, b, c).then(onFulfilled).catch(onRejected);\n// somethingAsync(a, b, c, function () {});\n```\n\nor use `thenify.withCallback()`\n\n```js\nvar thenify = require('thenify').withCallback;\n\nvar somethingAsync = thenify(function somethingAsync(a, b, c, callback) {\n  callback(null, a, b, c);\n});\n\n// somethingAsync(a, b, c).then(onFulfilled).catch(onRejected);\n// somethingAsync(a, b, c, function () {});\n```\n\n- Always return the first argument in callback\n\n```js\nvar thenify = require('thenify');\n\nvar promise = thenify(function (callback) {\n  callback(null, 1, 2, 3);\n}, { multiArgs: false });\n\n// promise().then(function onFulfilled(value) {\n//   assert.equal(value, 1);\n// });\n```\n\n- Converts callback arguments to an object\n\n```js\nvar thenify = require('thenify');\n\nvar promise = thenify(function (callback) {\n  callback(null, 1, 2, 3);\n}, { multiArgs: [ 'one', 'tow', 'three' ] });\n\n// promise().then(function onFulfilled(value) {\n//   assert.deepEqual(value, {\n//     one: 1,\n//     tow: 2,\n//     three: 3\n//   });\n// });\n```\n\n[gitter-image]: https://badges.gitter.im/thenables/thenify.png\n[gitter-url]: https://gitter.im/thenables/thenify\n[npm-image]: https://img.shields.io/npm/v/thenify.svg?style=flat-square\n[npm-url]: https://npmjs.org/package/thenify\n[github-tag]: http://img.shields.io/github/tag/thenables/thenify.svg?style=flat-square\n[github-url]: https://github.com/thenables/thenify/tags\n[travis-image]: https://img.shields.io/travis/thenables/thenify.svg?style=flat-square\n[travis-url]: https://travis-ci.org/thenables/thenify\n[coveralls-image]: https://img.shields.io/coveralls/thenables/thenify.svg?style=flat-square\n[coveralls-url]: https://coveralls.io/r/thenables/thenify\n[david-image]: http://img.shields.io/david/thenables/thenify.svg?style=flat-square\n[david-url]: https://david-dm.org/thenables/thenify\n[license-image]: http://img.shields.io/npm/l/thenify.svg?style=flat-square\n[license-url]: LICENSE\n[downloads-image]: http://img.shields.io/npm/dm/thenify.svg?style=flat-square\n[downloads-url]: https://npmjs.org/package/thenify\n","maintainers":[{"email":"dead_horse@qq.com","name":"dead_horse"},{"email":"dead_horse@qq.com","name":"dead-horse"},{"email":"jonathanrichardong@gmail.com","name":"jongleberry"}],"time":{"modified":"2022-06-27T06:03:49.795Z","created":"2014-08-09T23:34:21.073Z","1.0.0":"2014-08-09T23:34:21.073Z","2.0.0":"2014-12-17T06:23:24.197Z","3.0.0":"2014-12-25T08:18:14.350Z","3.1.0":"2015-01-06T03:32:20.600Z","3.1.1":"2015-10-20T18:22:01.954Z","3.2.0":"2016-02-01T20:29:26.986Z","3.2.1":"2016-10-10T10:48:16.435Z","3.3.0":"2017-05-19T09:58:32.296Z","3.3.1":"2020-06-17T17:30:57.152Z"},"homepage":"https://github.com/thenables/thenify#readme","keywords":["promisify","promise","thenify","then","es6"],"repository":{"type":"git","url":"git+https://github.com/thenables/thenify.git"},"author":{"name":"Jonathan Ong","email":"me@jongleberry.com","url":"http://jongleberry.com"},"bugs":{"url":"https://github.com/thenables/thenify/issues"},"license":"MIT","readmeFilename":"README.md","users":{"shumkov":true,"icflorescu":true,"brooksn":true,"moimikey":true,"sylchamber":true,"tobiasnickel":true,"nickeltobias":true,"david-ruzicka":true,"cljames":true,"jochemstoel":true,"zhangaz1":true}}