test(ext/node): Port _fs_writeFile_test.ts from deno_std

[fbaltor]

Porting the node/_fs/_fs_writeFile_test.ts from deno_std, one of the tasks of the bigger issue #17840.

[CLAassistant]

All committers have signed the CLA.

[fbaltor]

There are two main points I'm having difficult with, which are:

1. The TextEncodings type, which is currently hardcoded in the test. The original test imports it from an utils file, but the correspondent one in the deno repo seems to be unreachable (ext/node/polyfills/_utils.ts, link).

2. The test of cancellation with an AbortSignal (link) that is not passing due to the following error:

error: TS2719 [ERROR]: Type 'AbortSignal' is not assignable to type 'AbortSignal'. Two different types with this name exist, but they are unrelated.

[bartlomieju]

What happens if you just skip as TextEncodings bit?

[fbaltor]

It complais: Argument of type 'string' is not assignable to parameter of type 'WriteFileOptions'. This parameter should be Encodings | CallbackWithError | WriteFileOptions | undefined, with type Encodings = BinaryEncodings | TextEncodings.

[bartlomieju]

Then I guess as any will be required here as well

[bartlomieju]

@fbaltor as for no 2, you will have to use as any there because of the problem described in #19527

[kt3k]

@fbaltor Please run tools/format.js to pass CI checks

[kt3k]

LGTM. Thanks!