> var esprima = require('esprima'); > var program = 'const answer = 42'; > esprima.tokenize(program); [ { type: 'Keyword', value: 'const' }, { type: 'Identifier', value: 'answer' }, { type: 'Punctuator', value: '=' }, { type: 'Numeric', value: '42' } ] > esprima.parse(program); { type: 'Program', body: [ { type: 'VariableDeclaration', declarations: [Object], kind: 'const' } ], sourceType: 'script' } For more information, please read the complete documentation.

The documentation is available in the following formats:

Esprima is a tool to perform lexical and syntactical analysis of JavaScript programs.

Esprima parser takes a string representing a valid JavaScript program and produces a syntax tree, an ordered tree that describes the syntactic structure of the program.

Using Node.js to play with Esprima · Using Esprima in a web browser · Using Esprima with Rhino or Nashorn · Chapter 2. Syntactic Analysis (Parsing) Distinguishing a Script and a Module · JSX Syntax Support · Browser Compatibility · Tolerant Mode · Regular Expression Literals ·

> var esprima = require('esprima'); > var program = 'const answer = 42'; > esprima.tokenize(program); [ { type: 'Keyword', value: 'const' }, { type: 'Identifier', value: 'answer' }, { type: 'Punctuator', value: '=' }, { type: 'Numeric', value: '42' } ] > esprima.parseScript(program); { type: 'Program', body: [ { type: 'VariableDeclaration', declarations: [Object], kind: 'const' } ], sourceType: 'script' } For more information, please read the complete documentation.

Using Node.js to play with Esprima · Using Esprima in a web browser · Using Esprima with Rhino or Nashorn · Chapter 2. Syntactic Analysis (Parsing) Distinguishing a Script and a Module · JSX Syntax Support · Browser Compatibility · Tolerant Mode · Node Location ·

Esprima syntax tree format is derived from the original version of Mozilla Parser API, which is then formalized and expanded as the ESTree specification.

Parser produces the (beautiful) syntax tree · // Life, Universe, and Everything var answer = 6 * 7; · Ready · Syntax · Tokens · URL for this code:

July 13, 2018 - ECMAScript parsing infrastructure for multipurpose analysis. Latest version: 4.0.1, last published: 8 years ago. Start using esprima in your project by running `npm i esprima`. There are 3640 other projects in the npm registry using esprima.

The script detectnestedternary.js in the examples/ subdirectory is using Esprima to look for a ternary conditional, i.e. operator ?:, which is immediately followed (in one of its code paths) by another ternary conditional.

Using Node.js to play with Esprima · Using Esprima in a web browser · Using Esprima with Rhino or Nashorn · Chapter 2. Syntactic Analysis (Parsing) Distinguishing a Script and a Module · JSX Syntax Support · Browser Compatibility · Tolerant Mode · Regular Expression Literals ·

Details for the file esprima-4.0.1.tar.gz.

Esprima is a tool to perform lexical and syntactical analysis of JavaScript programs. Esprima itself is also written in JavaScript.

api documentation for esprima (v3.1.3) · ECMAScript parsing infrastructure for multipurpose analysis · table of contents · module esprima · function esprima.parse (code, options, delegate) · function esprima.tokenize (code, options, delegate) · object esprima.Syntax · string esprima.version

The esprima_tokenize function returns a data frame with JavaScript tokens. The esprima_parse function returns the Syntax Tree in JSON format. This can be parsed to R using e.g.