jsdoc-type-pratt-parser

import { parse, stringify, type JsdocType } from 'jsdoc-type-pratt-parser'; async function main() { // Parse a complex JSDoc type expression using the TypeScript grammar const typeExpression = 'Promise<Array<string | number> | {name: string, age?: number}>'; console.log(`Parsing: "${typeExpression}"`); const ast: JsdocType = parse(typeExpression, 'typescript'); console.log('Parsed AST (simplified):', JSON.stringify(ast, null, 2)); // Accessing parts of the AST (e.g., the top-level type) if (ast.type === 'JsdocTypeUnion' && ast.elements) { console.log('First element of union:', JSON.stringify(ast.elements[0], null, 2)); } // Stringify the AST back to a type expression const stringified = stringify(ast); console.log(`Stringified AST: "${stringified}"`); // Example of parsing a JSDoc-specific type, like a callback const jsdocCallbackType = 'function(this: MyClass, ...args: Array<any>): Promise<void>'; console.log(`\nParsing JSDoc callback: "${jsdocCallbackType}"`); const callbackAst = parse(jsdocCallbackType, 'jsdoc'); console.log('Parsed callback AST (type):', callbackAst.type); } main().catch(console.error);