1. module esprima
   1. function esprima.parse (code, options, delegate)
   2. function esprima.tokenize (code, options, delegate)
   3. object esprima.Syntax
   4. string esprima.version

module esprima

function esprima.parse (code, options, delegate)

• description and source-code

  function parse(code, options, delegate) {
  	    var commentHandler = null;
  	    var proxyDelegate = function (node, metadata) {
  	        if (delegate) {
  	            delegate(node, metadata);
  	        }
  	        if (commentHandler) {
  	            commentHandler.visit(node, metadata);
  	        }
  	    };
  	    var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null;
  	    var collectComment = false;
  	    if (options) {
  	        collectComment = (typeof options.comment === 'boolean' && options.comment);
  	        var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment);
  	        if (collectComment || attachComment) {
  	            commentHandler = new comment_handler_1.CommentHandler();
  	            commentHandler.attach = attachComment;
  	            options.comment = true;
  	            parserDelegate = proxyDelegate;
  	        }
  	    }
  	    var parser;
  	    if (options && typeof options.jsx === 'boolean' && options.jsx) {
  	        parser = new jsx_parser_1.JSXParser(code, options, parserDelegate);
  	    }
  	    else {
  	        parser = new parser_1.Parser(code, options, parserDelegate);
  	    }
  	    var ast = (parser.parseProgram());
  	    if (collectComment) {
  	        ast.comments = commentHandler.comments;
  	    }
  	    if (parser.config.tokens) {
  	        ast.tokens = parser.tokens;
  	    }
  	    if (parser.config.tolerant) {
  	        ast.errors = parser.errorHandler.errors;
  	    }
  	    return ast;
  	}

• example usage

  ...
  
  > 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' }
  ```
  ...

function esprima.tokenize (code, options, delegate)

• description and source-code

  function tokenize(code, options, delegate) {
  	    var tokenizer = new tokenizer_1.Tokenizer(code, options);
  	    var tokens;
  	    tokens = [];
  	    try {
  	        while (true) {
  	            var token = tokenizer.getNextToken();
  	            if (!token) {
  	                break;
  	            }
  	            if (delegate) {
  	                token = delegate(token);
  	            }
  	            tokens.push(token);
  	        }
  	    }
  	    catch (e) {
  	        tokenizer.errorHandler.tolerate(e);
  	    }
  	    if (tokenizer.errorHandler.tolerant) {
  	        tokens.errors = tokenizer.errors();
  	    }
  	    return tokens;
  	}

• example usage

  ...
  
  A simple example on Node.js REPL:
  
  ```javascript
  > 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',
  ...