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jquery/esprima

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7,139 stars·773 forks·TypeScript·BSD-2-Clause·12 viewsesprima.org↗

Esprima

Esprima is a JavaScript parser that converts source code into a structured abstract syntax tree. It implements a specification-driven grammar to ensure compliance with ECMAScript standards, enabling the programmatic analysis and transformation of JavaScript programs.

The project provides capabilities for lexical tokenization to break source code into individual symbols and static syntax validation to verify that scripts are well-formed without executing the code.

Its functional surface covers JavaScript static analysis, lexical analysis, and the generation of abstract syntax trees.

Features

  • Abstract Syntax Tree Parsing - Provides the core capability of converting JavaScript source code into a structured abstract syntax tree for analysis.
  • Standardized Language Grammars - Implements a specification-driven grammar that strictly adheres to ECMAScript standards.
  • Language Specification Compliance - Implements parsing logic that strictly adheres to the official ECMAScript language specifications.
  • Lexical Tokenizers - Includes a lexical tokenizer that converts raw JavaScript source text into a sequential stream of tokens.
  • Lexical Tokenizers - Provides lexical tokenization to break JavaScript source code into individual symbols.
  • Source Code Lexical Analyzers - Performs lexical analysis to break JavaScript source code into tokens for processing tools.
  • Syntax Validation - Verifies that JavaScript code is well-formed according to language specifications without executing the program.
  • Abstract Syntax Tree Generation - Generates structured abstract syntax trees from JavaScript source code for deep structural analysis.
  • Syntax Validators - Checks if JavaScript source code follows language specifications to ensure scripts are well-formed.
  • Static Code Analysis - Enables static analysis of JavaScript code structure to find patterns and vulnerabilities without execution.
  • Recursive Descent Parsers - Utilizes a recursive descent parsing strategy to match JavaScript grammar rules through nested function calls.
  • Single-Pass Parsing - Employs a single-pass parsing strategy to generate a structural representation of the program in one traversal.
  • AST & Language Tools - High-performance ECMAScript-compliant parser.

Star history

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Frequently asked questions

What does jquery/esprima do?

Esprima is a JavaScript parser that converts source code into a structured abstract syntax tree. It implements a specification-driven grammar to ensure compliance with ECMAScript standards, enabling the programmatic analysis and transformation of JavaScript programs.

What are the main features of jquery/esprima?

The main features of jquery/esprima are: Abstract Syntax Tree Parsing, Standardized Language Grammars, Language Specification Compliance, Lexical Tokenizers, Source Code Lexical Analyzers, Syntax Validation, Abstract Syntax Tree Generation, Syntax Validators.

What are some open-source alternatives to jquery/esprima?

Open-source alternatives to jquery/esprima include: jshint/jshint — JSHint is a JavaScript static analysis tool and linter designed to detect errors and enforce coding standards. It… nikic/php-parser — PHP-Parser is a tool that converts PHP source code into an abstract syntax tree for static analysis and programmatic… lotabout/write-a-c-interpreter — This project is a C language interpreter and a practical implementation of a programming language. It parses and… acornjs/acorn — Acorn is a JavaScript parser that converts source text into a structured abstract syntax tree. It follows the ESTree… pmd/pmd — PMD is a multi-language static code analyzer used to identify programming flaws, unused variables, and dead code… done-0/fuck-u-code — This project is an AI-powered code reviewer and static analysis server that identifies low-quality files and generates…

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