mathisonian / mathisonian/command-exists

False negative for nvm

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Dominant language
JavaScript
Stars
147
Forks
22
PR merge metrics
No merged PRs in 30d

Description

I'm consuming command-exists as follows (only relevant code included):
```typescript
import commandExists from 'command-exists';
import { promisify } from 'util';

const doesCommandExist = promisify(commandExists);

const configure = async () => {
const isNVMInstalled = await doesCommandExist('nvm');
const isDockerInstalled = await doesCommandExist('docker');
console.log({ isNVMInstalled, isDockerInstalled });
};
configure();
```
Both are installed and usable from the command line. The output I get is:

```shell
{ isNVMInstalled: false, isDockerInstalled: true }
```
I'm on
MacOS Catalina 10.15.6 (19G73)
Node v12.16.3

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The payload names no source file or test. Start at the command-exists('nvm') entry point and reproduce the discrepancy on the stated macOS and Node versions, then compare it with the successful docker lookup. Done means nvm is detected when installed and a regression test covers the false negative.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, javascript, node.js
Domain
cli
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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