Allow to specify a different tsconfig.json

[meriturva]

As already implemented on https://github.com/TypeStrong/ts-node#tsconfig

Basically, we have to change the target used on a few ts files to 'es2020' but our main project still on 'es2017'.

Thanks.

[exrhizo]

implemented on esbuild as well:
evanw/esbuild#226

  --tsconfig=...            Use this tsconfig.json file instead of other ones

[exrhizo]

Okay, for my use case I created:

> node ./scripts/tsrun.mjs ./scripts/rmrf.ts

import { Runner } from '@digitak/esrun';

// Compile and run a ts script.
// We like our esnext, so this file was needed to
// set a custom tsconfig.

const { argv } = process;
const CUSTOM_TSCONFIG_FILE = 'tsconfig.esrun.json';

async function run() {
  let argsOffset = 2;

  const runner = new Runner(argv[argsOffset], {
    args: argv.slice(argsOffset + 1),
  });

  try {
    await runner.build({
      tsconfig: CUSTOM_TSCONFIG_FILE,
    });

    const status = await runner.execute();
    console.log('done executing', status);
    process.exit(status);
  } catch (error) {
    console.error(error);
    process.exit(1);
  }
}

console.log('hiya');
(async function () {
  await run();
})();

[Gin-Quin]

Done since 3.2.5

Use it like this:

esrun --tsconfig:/path/to/tsconfig.json myFile.ts