Cannot define a matching template literal type to a defined template literal · Issue #43143 · microsoft/TypeScript (original) (raw)

Bug Report

🔎 Search Terms

string, template, literal, type

🕗 Version & Regression Information

This is the behavior in every version I tried, including Nightly

⏯ Playground Link

Playground link with relevant code

💻 Code

function getCardTitle(title: string): test-${string} { return test-${title}; }

🙁 Actual behavior

TS infers the type string for the returned string, instead of the templated type.

🙂 Expected behavior

No error!