@airgap/coinlib-core/dependencies/src/pako-2.0.3/lib/utils/common.js

The @airgap/coinlib-core is a protocol agnostic library to prepare, sign and broadcast cryptocurrency transactions.

'use strict'

const _has = (obj, key) => {
  return Object.prototype.hasOwnProperty.call(obj, key)
}

module.exports.assign = function (obj /*from1, from2, from3, ...*/) {
  const sources = Array.prototype.slice.call(arguments, 1)
  while (sources.length) {
    const source = sources.shift()
    if (!source) {
      continue
    }

    if (typeof source !== 'object') {
      throw new TypeError(source + 'must be non-object')
    }

    for (const p in source) {
      if (_has(source, p)) {
        obj[p] = source[p]
      }
    }
  }

  return obj
}

// Join array of chunks to single array.
module.exports.flattenChunks = (chunks) => {
  // calculate data length
  let len = 0

  for (let i = 0, l = chunks.length; i < l; i++) {
    len += chunks[i].length
  }

  // join chunks
  const result = new Uint8Array(len)

  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {
    let chunk = chunks[i]
    result.set(chunk, pos)
    pos += chunk.length
  }

  return result
}