Understanding TaggedError and Effect.fail in Effect Typescript Library

I'm having a bit of confusion with:
1. what a

new TaggedError

new TaggedError

new TaggedError

new TaggedError looks like internally, and
2. what it's type is?

I know that within a generator, calling

yield* new SomeTaggedError()

yield* new SomeTaggedError()

yield* new SomeTaggedError()

yield* new SomeTaggedError() will automatically wrap it within an

Effect.fail(...)

Effect.fail(...)

Effect.fail(...)

Effect.fail(...) constructor and sequence it with the preceding effects.

However, what happens if you just return a

new SomeTaggedError()

new SomeTaggedError()

new SomeTaggedError()

new SomeTaggedError() directly? It's confusing because i can type it as either a

TaggedError

TaggedError

TaggedError

TaggedError class or an

Effect

Effect

Effect

Effect.

Is this just interpreted as a normal Error value, or is it wrapped in an

Effect.fail

Effect.fail

Effect.fail

Effect.fail that short-circuits?

export class PlatformError extends Data.TaggedError('PlatformError')<{
}> {}

const fn = (x: string) => new PlatformError()

export class PlatformError extends Data.TaggedError('PlatformError')<{
}> {}

const fn = (x: string) => new PlatformError()

export class PlatformError extends Data.TaggedError('PlatformError')<{
}> {}

const fn = (x: string) => new PlatformError()

export class PlatformError extends Data.TaggedError('PlatformError')<{
}> {}

const fn = (x: string) => new PlatformError()

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