Proposal: Add first-party core support for TypeScript configuration, data, and template files #3616
Description
In preparation for Node.js stable to ship TypeScript stripping as an unflagged feature https://nodejs.org/api/typescript.html
We already provide support for TypeScript via tsx, documented here: https://www.11ty.dev/docs/languages/typescript/
Default Configuration File Names
eleventy.config.tseleventy.config.mtseleventy.config.cts
Default Data File Names
*.11tydata.ts*.11tydata.mts*.11tydata.cts
Default TypeScript Template File Names
*.11ty.ts*.11ty.mts*.11ty.cts
Dependency Tree Mapping
See https://github.com/11ty/eleventy-dependency-tree-esm and https://github.com/11ty/eleventy-dependency-tree for existing solutions.