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39 lines
1.8 KiB
39 lines
1.8 KiB
{
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"name": "once",
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"version": "1.3.0",
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"description": "Run a function exactly one time",
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"main": "once.js",
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"directories": {
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"test": "test"
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},
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"dependencies": {},
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"devDependencies": {
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"tap": "~0.3.0"
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},
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"scripts": {
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"test": "tap test/*.js"
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},
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"repository": {
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"type": "git",
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"url": "git://github.com/isaacs/once"
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},
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"keywords": [
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"once",
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"function",
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"one",
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"single"
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],
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"author": {
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"name": "Isaac Z. Schlueter",
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"email": "i@izs.me",
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"url": "http://blog.izs.me/"
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},
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"license": "BSD",
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"readme": "# once\n\nOnly call a function once.\n\n## usage\n\n```javascript\nvar once = require('once')\n\nfunction load (file, cb) {\n cb = once(cb)\n loader.load('file')\n loader.once('load', cb)\n loader.once('error', cb)\n}\n```\n\nOr add to the Function.prototype in a responsible way:\n\n```javascript\n// only has to be done once\nrequire('once').proto()\n\nfunction load (file, cb) {\n cb = cb.once()\n loader.load('file')\n loader.once('load', cb)\n loader.once('error', cb)\n}\n```\n\nIronically, the prototype feature makes this module twice as\ncomplicated as necessary.\n\nTo check whether you function has been called, use `fn.called`. Once the\nfunction is called for the first time the return value of the original\nfunction is saved in `fn.value` and subsequent calls will continue to\nreturn this value.\n\n```javascript\nvar once = require('once')\n\nfunction load (cb) {\n cb = once(cb)\n var stream = createStream()\n stream.once('data', cb)\n stream.once('end', function () {\n if (!cb.called) cb(new Error('not found'))\n })\n}\n```\n",
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"readmeFilename": "README.md",
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"bugs": {
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"url": "https://github.com/isaacs/once/issues"
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},
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"_id": "once@1.3.0",
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"_from": "once@latest"
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}
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