Out-of-the-box TypeScript type errors

[rendall]

Using the latest commander.js with the latest typescript (and Node v18.12.1 FWIW), the Quick Start code from https://github.com/tj/commander.js/blob/HEAD/examples/string-util.js (but import via import { Command } from "commander";)

Gets a squiggly line under program.parse() with

Expected 1 arguments, but got 0.ts(2554)
index.d.ts(208, 11): An argument for 'argv' was not provided.
(method) local.Command.parse(argv: string[]): local.Command
Parse argv, settings options and invoking commands when defined.

@param argv

@returns — for chaining

To replicate, create a new project as described above. For reference, here is the tsconfig I'm using:

{
  "compilerOptions": {
    "target": "es2016" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
    "module": "Node16" /* Specify what module code is generated. */,
    "rootDir": "./src" /* Specify the root folder within your source files. */,
    "moduleResolution": "Node16" /* Specify how TypeScript looks up a file from a given module specifier. */,
    "outDir": "./dist" /* Specify an output folder for all emitted files. */,
    "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
    "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
    "strict": true /* Enable all strict type-checking options. */,
    "skipLibCheck": true /* Skip type checking all .d.ts files. */
  }
}

[shadowspawn]

I was not able to reproduce this. I suspect TypeScript is finding an old version of the typings file, as local has been gone for a while (#1081). If you are using npm, you can have a look at your Commander dependency using:

npm ls commander

[shadowspawn]

The argument to .parse() got made optional in #1172 which was released in Commander v5.

[rendall]

Ok. Might have been some version control weirdness. Let's close this.