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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This lines from node_modules/@babel/runtime/helpers/esm/possibleConstructorReturn.js

import _typeof from "@babel/runtime/helpers/typeof";
import assertThisInitialized from "./assertThisInitialized.js";

should be

import _typeof from "./

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