28 lines
568 B
JavaScript
28 lines
568 B
JavaScript
'use strict'
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module.exports = {
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unescape: unescape,
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escape: escape,
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encode: encode,
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decode: decode
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}
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function unescape (str) {
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return (str + '==='.slice((str.length + 3) % 4))
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.replace(/-/g, '+')
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.replace(/_/g, '/')
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}
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function escape (str) {
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return str.replace(/\+/g, '-')
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.replace(/\//g, '_')
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.replace(/=/g, '')
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}
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function encode (str, encoding) {
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return escape(Buffer.from(str, encoding || 'utf8').toString('base64'))
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}
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function decode (str, encoding) {
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return Buffer.from(unescape(str), 'base64').toString(encoding || 'utf8')
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}
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