wallet-storage

<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/services/chaintracker/chaintracks/BlockHeaderApi.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../../../prettify.css" /> <link rel="stylesheet" href="../../../../base.css" /> <link rel="shortcut icon" type="image/x-icon" href="../../../../favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="../../../../index.html">All files</a> / <a href="index.html">src/services/chaintracker/chaintracks</a> BlockHeaderApi.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 50% Statements 4/8 </div> <div class='fl pad1y space-right2'> 0% Branches 0/4 </div> <div class='fl pad1y space-right2'> 0% Functions 0/4 </div> <div class='fl pad1y space-right2'> 50% Lines 4/8 </div> 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class="line-coverage quiet">                                                                                                                                                                                57x               57x               57x               57x      </td><td class="text"><pre class="prettyprint lang-js">/** * These are fields of 80 byte serialized header in order whose double sha256 hash is a block's hash value * and the next block's previousHash value. * * All block hash values and merkleRoot values are 32 byte hex string values with the byte order reversed from the serialized byte order. */ export interface BaseBlockHeader { /** * Block header version value. Serialized length is 4 bytes. */ version: number /** * Hash of previous block's block header. Serialized length is 32 bytes. */ previousHash: string /** * Root hash of the merkle tree of all transactions in this block. Serialized length is 32 bytes. */ merkleRoot: string /** * Block header time value. Serialized length is 4 bytes. */ time: number /** * Block header bits value. Serialized length is 4 bytes. */ bits: number /** * Block header nonce value. Serialized length is 4 bytes. */ nonce: number }   /** * A `BaseBlockHeader` extended with its computed hash and height in its chain. */ export interface BlockHeader extends BaseBlockHeader { /** * Height of the header, starting from zero. */ height: number /** * The double sha256 hash of the serialized `BaseBlockHeader` fields. */ hash: string }   /** * The "live" portion of the block chain is recent history that can conceivably be subject to reorganizations. * The additional fields support tracking orphan blocks, chain forks, and chain reorgs. */ export interface LiveBlockHeader extends BlockHeader { /** * The cummulative chainwork achieved by the addition of this block to the chain. * Chainwork only matters in selecting the active chain. */ chainWork: string /** * True only if this header is currently a chain tip. e.g. There is no header that follows it by previousHash or previousHeaderId. */ isChainTip: boolean /** * True only if this header is currently on the active chain. */ isActive: boolean /** * As there may be more than one header with identical height values due to orphan tracking, * headers are assigned a unique headerId while part of the "live" portion of the block chain. */ headerId: number /** * Every header in the "live" portion of the block chain is linked to an ancestor header through * both its previousHash and previousHeaderId properties. * * Due to forks, there may be multiple headers with identical `previousHash` and `previousHeaderId` values. * Of these, only one (the header on the active chain) will have `isActive` === true. */ previousHeaderId: number | null }   // // TYPE GUARDS //   /** * Type guard function. * @publicbody */ export function isLive (header: BlockHeader | LiveBlockHeader): header is LiveBlockHeader { return (header as LiveBlockHeader).headerId !== undefined }   /** * Type guard function. * @publicbody */ export function isBaseBlockHeader (header: BaseBlockHeader | BlockHeader | LiveBlockHeader): header is BaseBlockHeader { return typeof header.previousHash === 'string' }   /** * Type guard function. * @publicbody */ export function isBlockHeader (header: BaseBlockHeader | BlockHeader | LiveBlockHeader): header is LiveBlockHeader { return ('height' in header) && typeof header.previousHash === 'string' }   /** * Type guard function. * @publicbody */ export function isLiveBlockHeader (header: BaseBlockHeader | BlockHeader | LiveBlockHeader): header is LiveBlockHeader { return 'chainwork' in header && typeof header.previousHash === 'string' }  </pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2025-01-25T12:31:58.489Z </div> <script src="../../../../prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="../../../../sorter.js"></script> <script src="../../../../block-navigation.js"></script> </body> </html>