commonform-serialize

serialize Common Forms

This package defines a uniform, deterministic way to serialize Common Form objects, so they can be hashed consistently.

var serialize = require('commonform-serialize')

Sorts object keys:

var assert = require('assert')
assert.deepEqual(
  serialize.stringify({ a: '1', b: '2' }),
  serialize.stringify({ b: '2', a: '1' })
)

Outputs valid JSON String, Object, and Array:

var a1 = { a: '1' }
assert.deepEqual(
  JSON.parse(serialize.stringify(a1)),
  a1
)

var a12 = { a: [ '1', '2' ] }
assert.deepEqual(
  JSON.parse(serialize.stringify(a12)),
  a12
)

var aEmpty = { a: [ ] }
assert.deepEqual(
  JSON.parse(serialize.stringify(aEmpty)),
  aEmpty
)

Escapes quotation marks:

assert.deepEqual(
  serialize.stringify({ a: '"this is a test"' }),
  '{"a":"\\"this is a test\\""}'
)

Throw errors for non-String, non-Object, non-Array content:

var invalidValues = {
  boolean: true,
  number: 1,
  null: null,
  undefined: void 0
}

Object.getOwnPropertyNames(invalidValues).map(function (type) {
  assert.throws(
    function () {
      serialize.stringify({ a: invalidValues[type] })
    },
    /argument to stringify contains other than object, array, or string/
  )
})