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28 lines
859 B
28 lines
859 B
# minipass-sized |
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A Minipass stream that raises an error if you get a different number of |
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bytes than expected. |
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## USAGE |
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Use just like any old [minipass](http://npm.im/minipass) stream, but |
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provide a `size` option to the constructor. |
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The `size` option must be a positive integer, smaller than |
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`Number.MAX_SAFE_INTEGER`. |
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```js |
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const MinipassSized = require('minipass-sized') |
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// figure out how much data you expect to get |
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const expectedSize = +headers['content-length'] |
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const stream = new MinipassSized({ size: expectedSize }) |
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stream.on('error', er => { |
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// if it's the wrong size, then this will raise an error with |
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// { found: <number>, expect: <number>, code: 'EBADSIZE' } |
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}) |
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response.pipe(stream) |
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``` |
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Caveats: this does not work with `objectMode` streams, and will throw a |
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`TypeError` from the constructor if the size argument is missing or |
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invalid.
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