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import fs from 'fs';import ohm from 'ohm-js';import prettier from 'prettier';import {fileURLToPath, URL} from 'url';
import {getActionDecls} from '@ohm-js/cli/src/helpers/generateTypes.js';
/*  This script uses the internals of ohm-typescript-codegen to generate  portions of Ohm's main TypeScript declarations (index.d.ts). */
const templatePath = new URL('./data/index.d.ts.template', import.meta.url);const doNotEditBanner = `// DO NOT EDIT! This file is autogenerated from scripts/data/index.d.ts.template.\n`;
// Renders a very simple Mustache-style template, with variables like// `{{varName}}` and comments like `{{! This is a comment. }}`const render = (template, vars) =>  template.replace(/{{([^{}]*)}}/g, (_, name) => {    if (name.trim().startsWith('!')) return ''; // Comment    return vars[name]; // Variable substitution.  });
(async function main() {  // Get the BuiltInRules grammar and generate the types.  const BuiltInRules = ohm.ohmGrammar.superGrammar;  const builtInRuleActions = ['', ...getActionDecls(BuiltInRules)].join('\n    ');
  // Render index.d.ts from the template, overwriting the existing file contents.  const template = await fs.promises.readFile(templatePath, 'utf-8');  const output = render(template, {    builtInRuleActions,    doNotEditBanner  });  const options = await prettier.resolveConfig(fileURLToPath(templatePath));  const formattedOutput = prettier.format(output, {    ...options,    parser: 'typescript'  });  await fs.promises.writeFile(    new URL('../index.d.ts', import.meta.url),    formattedOutput,    'utf-8'  );})();