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// Escaping curly braces is necessary for LangChain to correctly process the prompt
function escapeBraces(str) {
return str
.replace(/({{2,})|(}{2,})/g, (match) => `${match[0]}`)
.replace(/{|}/g, (match) => `${match}${match}`);
}
function getSnippet(text) {
let limit = 50;
let splitText = escapeBraces(text).split(' ');
if (splitText.length === 1 && splitText[0].length > limit) {
return splitText[0].substring(0, limit);
}
let result = '';
let spaceCount = 0;
for (let i = 0; i < splitText.length; i++) {
if (result.length + splitText[i].length <= limit) {
result += splitText[i] + ' ';
spaceCount++;
} else {
break;
}
if (spaceCount == 10) {
break;
}
}
return result.trim();
}
module.exports = {
escapeBraces,
getSnippet,
};
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