Twoslash

Use for docs examples powered by Twoslash.

Scope and defaults

Prefer the smallest rendered snippet that still teaches the point.
Keep setup imports, helper declarations, and fake files type-visible but reader-hidden with cut directives.
Prefer // @errors: ... when the error itself is part of the lesson.
Prefer // @noErrors only when the snippet is intentionally incomplete for some other reason, such as completion demos.
Prefer // @filename: for multi-file context instead of explaining missing imports in prose.
Prefer // @showEmit only when the emitted JS, .d.ts, or map file is the teaching target.
Do not reach for this skill for plain TypeScript snippets that do not rely on Twoslash behavior.