import {readFileSync, readdirSync} from 'fs';
var readContent = (function(){
let contentCache = {};
return (bookName)=>{
let content = contentCache[bookName];
if (!content){
content = readFileSync(bookName+".txt", "utf8");
contentCache[bookName] = content;
}else{
// console.info(content);
}
return content;
};
})();
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