How to use the parse function from babylon

Find comprehensive JavaScript babylon.parse code examples handpicked from public code repositorys.

babylon.parse is a JavaScript parser that takes a code string as input and returns an Abstract Syntax Tree (AST) that represents the structure of the code.

index.js

GitHub: madhava96/volksy-tech-web_back_end

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    return map;
  }
};

File.prototype.parse = function parse(code) {
  var parseCode = _babylon.parse;
  var parserOpts = this.opts.parserOpts;

  if (parserOpts) {
    parserOpts = (0, _assign2.default)({}, this.parserOpts, parserOpts);

+ 13 other calls in file

helper.js

GitHub: mmpyw01/software-studio

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if (parserName === undefined) {
  throw new Error('No parser specified');
}
if (parserName === 'babel') {
  try {
    return babelParser.parse(code, { plugins, sourceFilename: 'test.js' });
  } catch (_) {
    // eslint-disable-next-line no-console
    console.warn(`Failed to parse with ${fallbackToBabylon ? 'babylon' : 'Babel'} parser.`);
  }

+ 13 other calls in file

How does babylon.parse work?

babylon.parse is a function provided by the babylon library that takes in a string of code and returns an abstract syntax tree (AST) representation of that code, which can then be manipulated programmatically. The AST represents the structure of the code in a hierarchical format, making it easier for tools to analyze, modify, and transform the code. The babylon.parse function is commonly used as a parser in tools that work with JavaScript code, such as transpilers, linters, and code editors.

evalToString-test.js

GitHub: zhouzhounice/hervestDay

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const evalToString = require('../evalToString');
const babylon = require('babylon');


const parse = source =>
  babylon.parse(`(${source});`).program.body[0].expression; // quick way to get an exp node


const parseAndEval = source => evalToString(parse(source));


describe('evalToString', () => {

+ 3 other calls in file

main.js

GitHub: teemosauce/mini-webpack

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        resolve(data)
    })
})

//1.将源码变成抽象语法树
const ast = babylon.parse(sourceCode, {
    sourceType: 'module'
})

// 2.遍历抽象语法树， 找到所有的import信息，收集依赖

+ 9 other calls in file

Ai Example

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const babylon = require("babylon");

const code = "const sum = (a, b) => a + b";
const options = { sourceType: "module" };
const ast = babylon.parse(code, options);

console.log(ast);

In this example, we use babylon.parse to parse the JavaScript code const sum = (a, b) => a + b. We pass the code as the first argument to parse, and an options object as the second argument. The options object specifies that the code should be parsed as a module. The parse function returns an abstract syntax tree (AST) representation of the code. We log the AST to the console using console.log.

helper.js

GitHub: namrataharibal/nysl-mapping

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if (parserName === undefined) {
  throw new Error('No parser specified');
}
if (parserName === 'babel') {
  try {
    return babelParser.parse(code, { plugins });
  } catch (_) {
    // eslint-disable-next-line no-console
    console.warn(`Failed to parse with ${fallbackToBabylon ? 'babylon' : 'Babel'} parser.`);
  }

parser.js

GitHub: NaturalDragon/study

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const template = require('babel-template')
const sourceCode = `function square(n) {
    return n * n;
  }`;


let ast = babylon.parse(sourceCode, {
  sourceType: 'module',
  plugins: ['jsx']
});
let a = babylon.parseExpression(sourceCode, {

+ 2 other calls in file

expression-parser.js

GitHub: zcoding/naive-loader

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const ctx = '$vm';
const ctxState = '$state';


module.exports = function parseExpression(exp, alias = []) {
  exp = '(' + exp + ')';
  const ast = babylon.parse(exp);
  let needRemoveBrackets = false;
  if (ast.program.body[0].expression.type === 'ObjectExpression') {
    needRemoveBrackets = true;
  }

Other functions in babylon

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