CBOR Codec

CBOR Codec for NodeJS and the Web.

CBOR-259 explicit maps

Demo

Live demo

Use

from NodejS,

import {cbor_encode, cbor_decode} from "cbor-codec"

const demo_data = {
  demo_cbor_support: new Date('2018-11-16T12:23:57-0700'),
  some_numbers: new Float32Array([
    Math.PI, Math.SQRT2, Math.SQRT1_2,
    Math.LN10, Math.LN2, Math.E, Math.LOG10E, Math.LOG2E ])}

let demo_u8 = cbor_encode(demo_data)
console.log(demo_u8)

console.log(cbor_decode(demo_data_u8))

or direclty from HTML,

<script type='module'>
  import {cbor_encode, cbor_decode} from "//cdn.jsdelivr.net/npm/cbor-codec/esm/index.mjs"

  const demo_data = {
    demo_cbor_support: new Date('2018-11-16T12:23:57-0700'),
    some_numbers: new Float32Array([
      Math.PI, Math.SQRT2, Math.SQRT1_2,
      Math.LN10, Math.LN2, Math.E, Math.LOG10E, Math.LOG2E ])}

  let demo_u8 = cbor_encode(demo_data)
  console.log(demo_u8)

  console.log(cbor_decode(demo_data_u8))
</script>

Docs

See the API docs.

Overview

From NodeJS,

npm install cbor-codec

or in HTML,

<script type='module'>
  import {cbor_encode, cbor_decode} from "//cdn.jsdelivr.net/npm/cbor-codec/esm/index.mjs"

  import {cbor_encode} from "//cdn.jsdelivr.net/npm/cbor-codec/esm/encode.mjs"
  import {cbor_decode} from "//cdn.jsdelivr.net/npm/cbor-codec/esm/decode.mjs"

  // minified
  import {cbor_encode, cbor_decode} from "//cdn.jsdelivr.net/npm/cbor-codec/esm/index.min.mjs"
  import {cbor_encode} from "//cdn.jsdelivr.net/npm/cbor-codec/esm/encode.min.mjs"
  import {cbor_decode} from "//cdn.jsdelivr.net/npm/cbor-codec/esm/decode.min.mjs"
</script>

Decoding CBOR

let demo_data_u8 = hex_to_u8(
  'a27164656d6f5f63626f725f737570706f7274c1fb' +
  '41d6fbc6534000006c736f6d655f6e756d62657273' +
  'd8555820db0f4940f304b53ff304353f8e5d134018' +
  '72313f54f82d40d95bde3e3baab83f')

console.log(cbor_decode(demo_data_u8))

See the API docs for async streaming and custom CBOR tag decodings.

Encoding CBOR

const demo_data = {
  demo_cbor_support: new Date('2018-11-16T12:23:57-0700'),
  some_numbers:
    new Float32Array([
      Math.PI, Math.SQRT2, Math.SQRT1_2,
      Math.LN10, Math.LN2, Math.E, Math.LOG10E, Math.LOG2E ]),
}

let demo_u8 = cbor_encode(demo_data)
console.log('cbor_encoded[u8]:', demo_u8)
console.log('cbor_encoded[hex]:', u8_to_hex(demo_u8))

See the API docs for output streaming and custom CBOR tag encodings.

LevelDB / LevelDown CBOR Codec

Use CBOR for LevelDB/LevelDown codec.

Unit tests

Mocha-based unittests:

• Browser unittests
• NodeJS unittests

License

BSD 2-clause