I'm using a <code>.d.ts</code> definition file I found online for interoperating with a JavaScript library. I'm seeing the error message: <blockquote> TS1046: 'declare' modifier required for top level element </blockquote> What is causing this? I'm using TypeScript 0.9.1.

This was a breaking change between 0.8.x vs 0.9.x. <code>declare</code> is now required for all top level non-interface elements (i.e. <code>module</code>, <code>class</code>, <code>var</code>) in a declaration <code>.d.ts</code> file: <img src="https://i.stack.imgur.com/mceDg.png" alt="enter image description here"> Source: Microsoft Blog

error TS1046: 'declare' modifier required for top level element

1 Answers

This was a breaking change between 0.8.x vs 0.9.x. declare is now required for all top level non-interface elements (i.e. module, class, var) in a declaration .d.ts file:

enter image description here