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node compat: parseArgs doesn't support default option #22454

@sigmaSd

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@sigmaSd

Version: Deno 1.40.5

import { parseArgs } from "node:util";

const parsedArgs = parseArgs({
  options: { hello: { type: "string" } },
  allowPositionals: true,
});

console.log(parsedArgs);

node a.js --args hello a

{ values: [Object: null prototype] { hello: 'a' }, positionals: [] }

deno run a.js --args hello a

error: Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'execArgv')
const parsedArgs = parseArgs({
                   ^
    at getMainArgs (ext:deno_node/internal/util/parse_args/parse_args.js:53:28)
    at parseArgs (ext:deno_node/internal/util/parse_args/parse_args.js:162:48)
    at file:///home/mrcool/dev/lab/c/a.js:3:20

the above is already tracked by #22363

But the behavior is still not the same

import { parseArgs } from "node:util";

const parsedArgs = parseArgs({
  args: [],
  options: {
    handler: {
      type: "string",
      default: "hello",
    },
  },
});

console.log(parsedArgs.values.handler);

Running with not arguments

deno -> undefined
nodejs -> hello

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