YAML stringify() speciously restricts input type to Record<string, unknown>

[hudlow]

Describe the bug

YAML stringify() has signature:

function stringify(
  obj: Record<string, unknown>,
  options?: DumpOptions,
): string

But restricting the input to Record<string, unknown> seems completely unnecessary, and is not enforced by the underlying implementation.

Steps to Reproduce

yaml-types.ts:

import { stringify } from "https://deno.land/[email protected]/yaml/mod.ts";

console.log(stringify([1, 2, 3]));
console.log(stringify("string"));
console.log(stringify(1.01));
console.log(stringify(true));

Executes correctly:

$ deno run yaml-types.ts
- 1
- 2
- 3

string

1.01

true

Fails type check:

Desktop $ deno check yaml-types.ts
Check file:///Users/hudlow/Desktop/yaml-types.ts
error: TS2345 [ERROR]: Argument of type 'number[]' is not assignable to parameter of type 'Record<string, unknown>'.
  Index signature for type 'string' is missing in type 'number[]'.
console.log(stringify([1, 2, 3]));
                      ~~~~~~~~~
    at file:///Users/hudlow/Desktop/yaml-types.ts:3:23

TS2345 [ERROR]: Argument of type 'string' is not assignable to parameter of type 'Record<string, unknown>'.
console.log(stringify("string"));
                      ~~~~~~~~
    at file:///Users/hudlow/Desktop/yaml-types.ts:4:23

TS2345 [ERROR]: Argument of type 'number' is not assignable to parameter of type 'Record<string, unknown>'.
console.log(stringify(1.01));
                      ~~~~
    at file:///Users/hudlow/Desktop/yaml-types.ts:5:23

TS2345 [ERROR]: Argument of type 'boolean' is not assignable to parameter of type 'Record<string, unknown>'.
console.log(stringify(true));
                      ~~~~
    at file:///Users/hudlow/Desktop/yaml-types.ts:6:23

Found 4 errors.

Expected behavior

Type checking to succeed.

Environment

• OS: macOS 14.3.1
• deno version: 1.38.2 (release, aarch64-apple-darwin)
• std version: 0.220.1