tsrun/ts/loader.ts

import * as paths from './paths.js';
import * as plugins from './plugins.js';
import type { CompilerOptions } from 'typescript';

const defaultTsNodeOptions: plugins.tsNode.CreateOptions = {
  compilerOptions: {
    lib: ['dom'],
    target: <any>'es2022', // Script Target should be a string -> 2 is for ES2015
    experimentalDecorators: true,
    useDefineForClassFields: false,
    esModuleInterop: true,
    strictNullChecks: false,
    moduleResolution: <any>'nodenext',
    module: <any>'nodenext',
    verbatimModuleSyntax: true,
    paths: plugins.smartfile.fs.toObjectSync(plugins.path.join(paths.cwd, 'tsconfig.json'))
      ?.compilerOptions?.paths,
  } as CompilerOptions,
  esm: true,
  skipIgnore: true,
  transpileOnly: true,
};

console.log(`tsrun is using the following options: ${JSON.stringify(defaultTsNodeOptions, null, 2)}`);
export const { resolve, load, getFormat, transformSource } = plugins.tsNode.createEsmHooks(
  plugins.tsNode.register(defaultTsNodeOptions),
) as any;