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How it works |
ts-node works by registering hooks for .ts, .tsx, .js, and/or .jsx extensions.
Vanilla node loads .js by reading code from disk and executing it. Our hook runs in the middle, transforming code from TypeScript to JavaScript and passing the result to node for execution. This transformation will respect your tsconfig.json as if you had compiled via tsc.
We also register a few other hooks to apply sourcemaps to stack traces and remap from .js imports to .ts.