@ipld/garbage
v6.0.8
Published
Garbage data generator for the IPLD Data Model
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Readme
@ipld/garbage
Garbage data generator for the IPLD Data Model
Table of contents
Install
$ npm i @ipld/garbage
Based on substack's "garbage".
API
garbage(count = 200, options)
Where count
determines the approximate target number of bytes a garbage object should consume. And options
allows for a weight
object that allows you to provide a number for each object type to weight the random garbage generator. By default, all object types are weighted equally (with a value of 1
), providing a number (>= 0
), you can adjust the liklihood that particular types will appear relative to the weights of the other types. A weighting of 0
will turn off that type entirely.
options
options.weights
an object with properties matching the IPLD data model types (see below) with numbers (>=0
) that will weight randomness selection. Default:{ list: 1, map: 1, string: 1, bytes: 1, boolean: 1, integer: 1, float: 1, null: 1, CID: 1 }
.options.initialWeights
an object, similar tooptions.weights
, that only applies to the initial object. Subsequent object creation will useoptions.weights
. This allows for weighting of the container object to be more typical of IPLD data, which is typically some kind of map or list. Default{ list: 10, map: 10, string: 1, bytes: 1, boolean: 1, integer: 1, float: 1, null: 1, CID: 1 }
.
Where you provide a custom weights
, it will override initialWeights
. e.g. { weights: { float: 0 } }
will result in no floats at all, even for the initial object.
import { garbage } from '@ipld/garbage'
console.log(garbage(100, { weights: { float: 0, object: 0 }}))
Might yield:
{
'QbN/}`EO\tb6>\tI,`': 7827882605575541,
"~'wD!☺S}<Q|d1$☺": Uint8Array(12) [
116, 12, 191, 180, 214,
0, 88, 26, 116, 213,
88, 109
],
'q<': CID(baguqefrapdjrz7rknhnokqxo75ogs2hfpmdqiy7weez55ezaoyh63sd22n4q)
}
All IPLD Data Model types are within range for random creation, including top-level returns (a single call to garbage()
might just return a null
):
- null
- boolean
- integer
- float
- string
- bytes
- list
- map
- CID
Use import { toString } from '@ipld/garbage/to-string'
to import a function that can turn an object returned by garbage()
to a JavaScript string. This may be useful for generating a fixed set of test fixtures rather than relying on randomness during each run.
License
Licensed under either of
- Apache 2.0, (LICENSE-APACHE / http://www.apache.org/licenses/LICENSE-2.0)
- MIT (LICENSE-MIT / http://opensource.org/licenses/MIT)
Contribute
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.