Sandbox::https://github.com/tomzhang/pcui/blob/main/tsd.js

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const fs = require('fs');

const path = './dist/pcui.d.ts';

var lastClass = '';

function removeDuplicateClasses(str) {

return str.replace(/(\/\*[\s\S]*?\*\/[\r\n]?)?declare class ([a-zA-Z]+).*\{[\s\S]*?\}/g, function(all, jsdoc, classname) {

if (all == lastClass) {

return `// drop duplicate: ${classname}`;

}

lastClass = all;

return all;

});

}

// replace declare with export and add 'export as namespace pc' in the end

let ts = fs.readFileSync(path, 'utf8');

ts = removeDuplicateClasses(ts);

ts = ts.replace(/^declare /gm, 'export ');

// Remove empty interfaces

ts = ts.replace(/export interface ([a-zA-Z]+).*\{\n\}/g, function(all, interfacename) { return `// drop empty interface: ${interfacename}` });

// Remove duplicate exports

ts += 'export as namespace pcui;\n';

fs.writeFileSync(path, ts);