u/ais04in r/typescript • Recommends
How the TypeScript Compiler Compiles - understanding the compiler internal
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#typescriptcompiler#ast#parser
How the TypeScript Compiler Compiles - understanding the compiler internal
orta therox
893 subscribers • 1 video on Hallway
- Recommended by 2 people: 1 on Lobsters and 1 in engineering communities.
- Presented by Orta Therox, TypeScript core team member
Advanced. Deep dive for people who know the field.
21K views4 years ago2 recommendations
Systems programmingProgramming languagesCompilers and interpretersTypeScript
Orta Therox provides a systems-level walkthrough of the TypeScript compiler, explaining the parser, binder, checker, and emitter.
A systems-level look at the TypeScript compiler. How it converts a file into something into data, checks the validity of that data and finally creates .js files on the disk. Timestamps: Syntax Trees: Text Scanning: Parser: Binder: Flow Graph: Checker: Type Initializer Inference: Generic Type Inference: Contextual Typing: Emitting Files: Transformers: Transform Flags: Slides: keybase.pub/orta/talks/tsconf-2021/ ("long" version)Why it's here
2 people recommend thisWhat people say. Recommended as an excellent, deep-dive explanation of the TypeScript compiler's internal architecture.
u/nadameuin r/typescript • Mentions
On “Searching for videos about the TypeScript Compiler API”
link to this video
u/nedlininin r/typescript • Mentions
On “Why is tsc reporting far fewer errors than VSCode for the same project and Typescript version?”
Someone already answered your question. tsc is a compiler. VS Code is running an LSP.
The LSP decouples the requirement for the perfect syntax creating an AST, the compiler does not. Semantic checks happen \_after\_ the syntactic checks in the compiler.
Yes, it has been this way for a very, very long time.
https://github.com/microsoft/typescript/wiki/using-the-language-service-api
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