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61 lines
2.1 KiB
Markdown
61 lines
2.1 KiB
Markdown
5 years ago
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# better-assert
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Better c-style assertions using [callsite](https://github.com/visionmedia/callsite) for
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self-documenting failure messages.
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## Installation
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$ npm install better-assert
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## Example
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By default assertions are enabled, however the __NO_ASSERT__ environment variable
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will deactivate them when truthy.
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```js
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var assert = require('better-assert');
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test();
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function test() {
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var user = { name: 'tobi' };
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assert('tobi' == user.name);
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assert('number' == typeof user.age);
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}
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AssertionError: 'number' == typeof user.age
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at test (/Users/tj/projects/better-assert/example.js:9:3)
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at Object.<anonymous> (/Users/tj/projects/better-assert/example.js:4:1)
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at Module._compile (module.js:449:26)
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at Object.Module._extensions..js (module.js:467:10)
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at Module.load (module.js:356:32)
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at Function.Module._load (module.js:312:12)
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at Module.runMain (module.js:492:10)
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at process.startup.processNextTick.process._tickCallback (node.js:244:9)
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```
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## License
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(The MIT License)
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Copyright (c) 2012 TJ Holowaychuk <tj@vision-media.ca>
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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'Software'), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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