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common/packages/util/docs/ext.md
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Jaco Greeff b5c5734c7c Add Blake2s & XXHash utility functions (#66)
* Initial split of util & util-crypto

* Add initial XXHash version

* Blake2s wit tests & documentation

* Add sha512 (from NaCl)

* Add randomBytes (from NaCl)

* Flow fixes

* Update documentation

* Update latest @polkadot/dev
2018-01-25 14:13:43 +01:00

613 B

ext

Extensions to basic classes

  • ExtError Extension to the basic JS Error.

ExtError

Extension to the basic JS Error.

ExtError (message: string = '', code: number = UNKNOWN_ERROR, value: any)

The built-in JavaScript Error class is extended by adding a code to allow for Error categorization. In addition to the normal stack, message, the numeric code and data (mixed types) parameters are available on the object.

const { ExtError } = require('@polkadot/util');

throw new ExtError('some message', ExtError.CODES.METHOD_NOT_FOUND); // => error.code = -32601