estree/estree

Features

• Standardized AST Transformation - Defines a consistent set of object interfaces to represent source code as a tree for tool interoperability.
• Abstract Syntax Tree Specifications - Defines a formal standardized structure for representing JavaScript source code syntax in a tree format.
• Standardized Schemas - Defines a consistent tree format for JavaScript source code to ensure different parsers and tools can work together.
• Standardized Representations - Provides a standardized structure for import and export declarations using named, default, and namespace specifiers.
• Modern Syntax - Represents modern constructs including classes, arrow functions, template literals, and destructuring patterns.
• Module Interface Specifications - Standardizes named imports, exports, and re-exports using literals for namespace identifiers.
• Parser Specifications - Establishes a common tree format that ensures interoperability between different JavaScript parsers and transformation tools.
• Specification AST Generation - Defines a standardized set of object interfaces for representing JavaScript source code as an abstract syntax tree.
• Interoperable Syntax Pipelines - Provides a shared specification for abstract syntax trees enabling different frontend and backend tools to exchange data.
• Syntax Tree Construction - Standardizes the construction and structure of hierarchical syntax representations from JavaScript source code.
• ESTree AST Parsing - Provides the industry-standard specification for parsing JavaScript source code into abstract syntax trees.
• Experimental Syntax Support - Provides the means to parse and analyze unstable language features and new proposals via tree extensions.
• Literal Node Representations - Maps primitive values and large integers to nodes storing both the computed value and original source text.
• Optional Chaining - Models member accesses and function calls that short-circuit when a reference is null or undefined.
• AST Node Location Mapping - Associates tree nodes with specific line and column numbers in the original code for precise error reporting.
• AST-to-Source Mappings - Provides a standard for mapping abstract syntax tree nodes back to their original source code offsets.
• Class AST Modeling - Represents class bodies including method definitions, property definitions, and static initialization blocks.
• Private Identifier Nodes - Maps private class elements and their usage in expressions to a standardized AST node format.
• Syntax Proposal Modeling - Standardizes how new JavaScript syntax proposals and experimental features are represented in a structured tree format.
• Module Export Specifications - Maps export-all declarations that rename the exported namespace using a specific alias.
• Dynamic Imports - Models dynamic import syntax by treating the module source as an arbitrary expression node.
• Module Metadata Specifications - Models module import and export declarations that specify metadata such as media types for loaded modules.
• BigInt Representations - Defines a structured node for BigInt literals that preserves both the native numeric value and the original string representation.
• Source Coordinate Mapping - Provides a structured representation of JavaScript syntax that maps source locations to specific line and column numbers.
• Standardized Tree Models - Represents code in a standardized format to facilitate automated refactoring and the generation of modified source trees.
• Null-Coalescing Operators - Defines the standardized AST node for the nullish coalescing operator.
• Operator Node Modeling - Models complex logic like optional chaining and nullish coalescing as structured AST nodes with distinct operands.
• AST Schema Extensions - Specifies standardized node additions for experimental language proposals to maintain compatibility across parser versions.
• Static Code Analysis - Models language constructs as a structured tree to enable tools that analyze code without executing it.

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