gun/sea/array.js
2018-02-06 00:18:52 -08:00

24 lines
829 B
JavaScript

// This is Array extended to have .toString(['utf8'|'hex'|'base64'])
function SeaArray() {}
Object.assign(SeaArray, { from: Array.from })
SeaArray.prototype = Object.create(Array.prototype)
SeaArray.prototype.toString = function(enc = 'utf8', start = 0, end) {
const { length } = this
if (enc === 'hex') {
const buf = new Uint8Array(this)
return [ ...Array(((end && (end + 1)) || length) - start).keys()]
.map((i) => buf[ i + start ].toString(16).padStart(2, '0')).join('')
}
if (enc === 'utf8') {
return Array.from(
{ length: (end || length) - start },
(_, i) => String.fromCharCode(this[ i + start])
).join('')
}
if (enc === 'base64') {
return btoa(this)
}
}
module.exports = SeaArray;