waves-transactions 

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[license-url]: https://opensource.org/licenses/MIT
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Using this library you can easily create and sign transactions for Waves blockchain.
It also allows you to multi-sign existing transactions or create them without signature at all.

This library is a set of transaction constructing functions:
* Alias
* Issue
* Reissue
* Burn
* Lease
* Cancel lease
* Transfer
* Mass transfer
* Set script
* Data
* Set asset script
* Order

Check full documentation on GitHub Pages.

$3

The idea is really simple - you create transaction and sign it from a minimal set of required params.
If you want to create Transfer transaction the minimum you need to provide is amount and recipient as defined in Transfer params:
``js

const { transfer } = require('@waves/waves-transactions')
const seed = 'some example seed phrase'
const signedTranserTx = transfer({
amount: 1,
recipient: '3P6fVra21KmTfWHBdib45iYV6aFduh4WwC2',
timestamp: 1536917842558, //Timestamp is optional but it was overrided, in case timestamp is not provided it will fallback to Date.now()

//Every function from the list above has a set of required and optional params
//senderPublicKey: 'Cq5itmx4wbYuogySAoUp58MimLLkQrFFLr1tpJy2BYp1', // By default it is derived from seed,
// but if you don't want to sign transaction you have to provide it
//fee: 100000, //Fee is always optional, in case fee is not provided, it will be calculated for you
//additionalFee: 400000, //If fee is not set, this value will be added to the auto calculated value
//feeAssetId: undefined
}, seed)
`

Output will be a signed transfer transaction:
`js
{
id: '8NrUwgKRCMFbUbqXKQAHkGnspmWHEjKUSi5opEC6Havq',
type: 4,
version: 2,
recipient: '3P6fVra21KmTfWHBdib45iYV6aFduh4WwC2',
attachment: undefined,
feeAssetId: undefined,
assetId: undefined,
amount: 1,
fee: 100000,
senderPublicKey: '6nR7CXVV7Zmt9ew11BsNzSvVmuyM5PF6VPbWHW9BHgPq',
timestamp: 1536917842558,
proofs: [
'25kyX6HGjS3rkPTJRj5NVH6LLuZe6SzCzFtoJ8GDkojY9U5oPfVrnwBgrCHXZicfsmLthPUjTrfT9TQL2ciYrPGE'
]
}
`

Now you are able to POST it to Waves API or store for future purpose or you can add another signature from other party:
`js
const otherPartySeed = 'other party seed phrase'
const transferSidnedWithTwoParties = transfer(signedTranserTx, seed)
`

So now there are two proofs:
`js
{
id: '8NrUwgKRCMFbUbqXKQAHkGnspmWHEjKUSi5opEC6Havq',
type: 4,
version: 2,
recipient: '3P6fVra21KmTfWHBdib45iYV6aFduh4WwC2',
attachment: undefined,
feeAssetId: undefined,
assetId: undefined,
amount: 1,
fee: 100000,
senderPublicKey: '6nR7CXVV7Zmt9ew11BsNzSvVmuyM5PF6VPbWHW9BHgPq',
timestamp: 1536917842558,
proofs: [
'25kyX6HGjS3rkPTJRj5NVH6LLuZe6SzCzFtoJ8GDkojY9U5oPfVrnwBgrCHXZicfsmLthPUjTrfT9TQL2ciYrPGE',
'CM9emPzpe6Ram7ZxcYax6s7Hkw6698wXCMPSckveFAS2Yh9vqJpy1X9nL7p4RKgU3UEa8c9RGXfUK6mFFq4dL9z'
]
}
``