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ast

A grammar describes the syntax of a programming language, and might be defined in Backus-Naur form (BNF). A lexer performs lexical analysis, turning text into tokens. A parser takes tokens and builds a data structure like an abstract syntax tree (AST). The parser is concerned with context: does the sequence of tokens fit the grammar? A compiler is a combined lexer and parser, built for a specific grammar.

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jridgewell
jridgewell commented May 25, 2021

💻

  • Would you like to work on a fix?

How are you using Babel?

Programmatic API (babel.transform, babel.parse)

Input code

While scanning the recent esbuild commits, I noticed evanw/esbuild@f66b586. Essentially, Tagged Template Literals are a special form of function invocation, and we need to preserve the this rec