8000 Readonly string array causes type error for `choices` · Issue #103 · kazupon/gunshi · GitHub
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Readonly string array causes type error for choices #103

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Closed
4 tasks done
ryoppippi opened this issue Apr 30, 2025 · 0 comments · Fixed by #106
Closed
4 tasks done

Readonly string array causes type error for choices #103

ryoppippi opened this issue Apr 30, 2025 · 0 comments · Fixed by #106
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@ryoppippi
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Describe the bug

When we use readonly array for choices, it causes type mismatch.

import { define } from 'gunshi'

const choices = ['a', 'b'] as const;

const command = define({
    options: {
        foo: {
            type: 'enum',
            choices,
//         ^ The type 'readonly ["a", "b"]' is 'readonly' and cannot be assigned to the mutable type 'string[]'.(4104)
        }
    },
    run(){}
})

Reproduction

https://www.typescriptlang.org/play/?#code/JYWwDg9gTgLgBAbzgEwKYDNgDtVwL5zpQQhwDkA5gK5YDOAFsGQFDMDGEd8b9EwbqWnAC8cANpkAhmQA05AEZkAunElCOXANysNtbiRCSsyESgzZUACgTM4duBDAxgnWgC5Et+9-QQIHm28g+xgATzBUDzJULCoQWS9g7x4+AVoZRKC8TLwM7ygaSwBKBGy8IuYgA

Issue Runtime

Node.js

System Info

System:
    OS: macOS 15.4.1
    CPU: (11) arm64 Apple M3 Pro
    Memory: 122.47 MB / 36.00 GB
    Shell: 3.7.1 - /opt/homebrew/bin/fish
  Binaries:
    Node: 23.11.0 - ~/.local/share/devbox/global/default/.devbox/nix/profile/default/bin/node
    Yarn: 1.22.22 - ~/.local/share/devbox/global/default/.devbox/nix/profile/default/bin/yarn
    npm: 10.9.2 - ~/.local/share/devbox/global/default/.devbox/nix/profile/default/bin/npm
    pnpm: 10.8.0 - ~/.local/share/devbox/global/default/.devbox/nix/profile/default/bin/pnpm
    bun: 1.2.10 - ~/.local/share/aquaproj-aqua/bin/bun
  Browsers:
    Chrome: 135.0.7049.115
    Safari: 18.4

Additional context

No response

Validations

  • Read the Contributing Guide.
  • Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
  • Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
  • The provided reproduction is a minimal reproducible of the bug.
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fix: readonly string array error for enum option kazupon/gunshi
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@kazupon @ryoppippi
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