Learn TypeScript 3 by Building Web Applications

Resolution strategies

TypeScript has two built-in strategies for resolving modules: classic and node. The default is node, which corresponds to the Node.js style (https://nodejs.org/api/modules.html). You can change the default strategy through the moduleResolution compiler flag.

As its name suggests, the node strategy takes inspiration from the mechanism used by Node.js to resolve modules at runtime. It is described here: https://nodejs.org/api/modules.html.

We'll spare you the explanation of the classic mode as it not used much nowadays, apart from for backward compatibility.

Let's now look at relative imports.