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utils.js
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utils.js
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'use strict';
var maskPubAddress = function maskPubAddress(pub) {
// keep 3 first and 3 last chars unmasked
var masked = '';
for (var i = 0; i < pub.length - 3 * 2; i++) {
masked += '*';
}
return pub[0] + pub[1] + pub[2] + masked + pub[pub.length - 3] + pub[pub.length - 2] + pub[pub.length - 1];
};
var hex2str = function hex2str(hex) {
var _hex = hex.toString(); // force conversion
var str = '';
for (var i = 0; i < _hex.length; i += 2) {
str += String.fromCharCode(parseInt(_hex.substr(i, 2), 16));
}
return str;
};
// ref: https://stackoverflow.com/questions/6274339/how-can-i-shuffle-an-array
var shuffleArray = function shuffleArray(a) {
for (var i = a.length - 1; i > 0; i--) {
var j = Math.floor(Math.random() * (i + 1));
var _ref = [a[j], a[i]];
a[i] = _ref[0];
a[j] = _ref[1];
}
return a;
};
module.exports = {
maskPubAddress: maskPubAddress,
hex2str: hex2str,
shuffleArray: shuffleArray
};