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I'm very confused about the difference between tsc and ts-node. I'm learning TypeScript and I usually transpile server .ts files with tsc command.
Now, I'm approaching nestjs framework, and I see that it uses ts-node.
So what's the difference between the two? Which one should I use?
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json (recommended) ts-node automatically finds and loads tsconfig. json . Most ts-node options can be specified in a "ts-node" object using their programmatic, camelCase names.
The TypeScript Compiler (also known as "tsc") is the backbone of many bundlers, plugins, and tools that work with TypeScript. While we don't often invoke tsc directly, we do configure how tsc behaves inside of the bundlers that we use.
No you shouldn't use it in production, even though it will cache the compiled files it'll be slower to start and consume more memory because it keeps around an instance of the compiler and files in memory.
ts-node is a TypeScript execution engine and REPL for Node. js. It JIT transforms TypeScript into JavaScript, enabling you to directly execute TypeScript on Node. js without precompiling.
The main difference is that tsc transpile all the file according to your tsconfig. Instead, ts-node will start from the entry file and transpile the file step by step through the tree based on the import/export
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