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idealwebsolutions/zw-utils.js

Created December 10, 2021 06:03
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some zero width functions
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zw-utils.js
function textToZeroWidth (text, encoding = 'utf8') {
const buf = Buffer.from(text, encoding);
return buf.reduce((str, byte) => str + byte.toString(2).padStart(8, '0'), '')
.split('').map((binary) => binary === '0' ? '​' : '‌').join(' ');
};
function zeroWidthToText (zwChars) {
let message = '';
const b = zwChars.map((zw) => zw === '​' ? '0' : '1').join('');
for (let x = 0; x < Math.ceil(b.length / 8); x++) {
const start = x * 8;
const end = start + 8;
const byte = b.slice(start, end);
message += String.fromCharCode(parseInt(byte, 2).toString(10));
}
return message;
};
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