👍 Add isUnknown predicate function

[lambdalisue]

SSIA

Summary by CodeRabbit

• New Features

  • Introduced a new isUnknown check to enhance type validation capabilities.

• Tests

  • Added test cases for the new isUnknown function to ensure reliability.

[coderabbitai]

Walkthrough

The update introduces a new function isUnknown which, paradoxically, returns true for any input, suggesting that every type is unknown. This function is added to the is.ts module and is accompanied by a test case in is_test.ts to ensure its functionality. The change seems to be a whimsical or philosophical take on type checking, as it defies the typical purpose of type validation functions.

Changes

File(s)	Change Summary
is.ts, is_test.ts	Added a new function isUnknown that returns true for any input, along with its test case.

🐇✨
To the land of code, a new function springs,
isUnknown, a jest it brings.
For every type, it nods with glee,
"A mystery you are!" it decrees. 🎩🐰
✨🐇

---

Tips

Chat with CodeRabbit Bot (@coderabbitai)

• If you reply to a review comment from CodeRabbit, the bot will automatically respond.
• To engage with CodeRabbit bot directly around the specific lines of code in the PR, mention @coderabbitai in your review comment
• Note: Review comments are made on code diffs or files, not on the PR overview.
• Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.

CodeRabbit Commands (invoked as PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger a review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai help to get help.

Note: For conversation with the bot, please use the review comments on code diffs or files.

CodeRabbit Configration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• The JSON schema for the configuration file is available here.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/coderabbit-overrides.v2.json

[coderabbitai]

Review Status

Actionable comments generated: 2

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between 8f8d181 and aec15fc.

Files selected for processing (2)

• is.ts (2 hunks)
• is_test.ts (2 hunks)

Additional comments: 2

is.ts (1)

• 515-521:
  If the implementation of isUnknown is not corrected, its utility when exported should be reconsidered, as it may not provide meaningful functionality.

is_test.ts (1)

• 36-42:
  The export list correctly includes the new isUnknown function.

[coderabbitai]

The test case for isUnknown is incorrectly expecting true for all known types, which contradicts the intended functionality of the function. The test should be set up to expect false for known types and true for unknown types.