espree
Babel (Formerly 6to5)
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espree | Babel (Formerly 6to5) | |
---|---|---|
5 | 60 | |
2,255 | 43,000 | |
0.6% | 0.2% | |
6.0 | 9.7 | |
9 days ago | 5 days ago | |
JavaScript | TypeScript | |
BSD 2-clause "Simplified" License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
espree
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ESLint: under the hood
Focusing again on ESLint, the parser used by the linter is called Espree. This is an in-house parser built by the ESLint folks to fully support ECMAScript 6 and JSX on top of the already existing Esprima. The Espree module provide APIs for both tokenization and parsing that you can easily test out.
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Abstract Syntax Trees and Practical Applications in JavaScript
Why do we then have other JavaScript parsers like babel parser, swc parser, acorn, espree and the likes since JavaScript engines have their own internal parsers?
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Quick start with ESLint
How does ESLint work? ESLint uses Espree for Javascript parsing. It uses an AST to evaluate patterns in code. It does all this before runtime.. meaning, without running your Javascript code it will find the bugs, syntax and stylistic errors.
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Gentle Introduction To ESLint Rules
ESLint doesn't process the code into the compiler phases, rather it provides an option to let you specify a Parser. By default, ESLint uses Espree which essentially converts JS source code to AST data structure, so in case you want to write a rule targeting TypeScript source code, you'll need to specify a different parser in your .eslintrc.json configuration file, same applies for different file extension, for HTML you might use this or creating your own parser!
- Show HN: Monocle ā bidirectional code generation library
Babel (Formerly 6to5)
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Top 20 Javascript Libraries on Github
Repository: Babel
- Do You Need an SBOM?
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What is an Abstract Syntax Tree in Programming?
GitHub | Website
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Mastering Jest Configuration for React TypeScript Projects with Vite: A Step-by-Step Guide
node 'node_modules/.bin/jest' '/Users/satparkash/code/test-app/src/A pp.test.tsx' -t 'App' FAIL src/App.test.tsx ā Test suite failed to run SyntaxError: /Users/satparkash/code/test-app/src/App.test.tsx: Support for the experimental syntax 'jsx' isn't currently enabled (6:12): 4 | describe('App', () => { 5 | it('should work as expected', () => { > 6 | render(); | ^ 7 | }); 8 | }); 9 | Add @babel/preset-react (https://github.com/babel/babel/tree/main/packages/babel-preset-react) to the 'presets' section of your Babel config to enable transformation. If you want to leave it as-is, add @babel/plugin-syntax-jsx (https://github.com/babel/babel/tree/main/packages/babel-plugin-syntax-jsx) to the 'plugins' section to enable parsing. Test Suites: 1 failed, 1 total Tests: 0 total Snapshots: 0 total Time: 0.278 s Ran all test suites matching /\/Users\/satparkash\/code\/test-app\/src\/App.test.tsx/i with tests matching "App".
- Open source public fund experiment - One and a half years update
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I Reworked my Rate My GMU Professor (Google Extension)
Webpack (Babel) - https://babel.dev/
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Babel is used by millions, so why are we running out of money? (2021)
I do appreciate your transparency, though I disagree with the sentiment that Iām arguing from a position of bad faith.
Itās a self-evident fact that the Babel team has not shown a moment of interest in lowering their role in the JavaScript ecosystem to anything short of kingmakers. Have a gander at their GitHub README and what do we see?[1]
- āBabel is a compiler for writing next generation JavaScript.ā Indefinitely.
- Over a dozen sponsor logos. An embarrassment of riches.
- A literal audio recording of a song in praise of the project.
The Babel team has a well documented history of their priorities[2], emphasizing the need for a modular approach that has no exit strategy[3]. At best, we have a case of accidental entrenchment and long term dependence on the Babel brewing as early as 2017![4]
Compare this infinite circus to the humble but popular Normalize.css, which has the express purpose to stop existing.[5]
If the Babel team wants to raise some money, they can start by putting a plan together that would codify an exit strategy. Itās certainly more noble than their current plan of barnacling on to every NPM packageā¦
- [1] https://github.com/babel/babel
- [2] https://github.com/babel/notes
- [3] https://github.com/babel/notes/blob/master/2016/2016-07/july...
- [4] https://github.com/babel/notes/blob/master/2017/2017-04/apri...
- [5] https://nicolasgallagher.com/about-normalize-css/
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Reveddit does not work
The problem was I had used some new code, Javascript's replaceAll(), that is unsupported by older browsers. And, the setup I have to automatically fix such issues (called babel) is out of date. So, while this problem appears to be resolved there, I hadn't updated that in awhile.
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The Complete Guide for Setting Up React App from Scratch (feat. TypeScript)
babel-loader(v9.1.0): allows transpiling JavaScript files using Babel and webpack.
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Upgrade your Lerna Workspace - Make it Fast and Modern!
created 6 years ago to solve the specific problem of managing the Babel repo packages
What are some alternatives?
escodegen - ECMAScript code generator
Traceur compiler - Traceur is a JavaScript.next-to-JavaScript-of-today compiler
recast - JavaScript syntax tree transformer, nondestructive pretty-printer, and automatic source map generator
Live Server - A simple development http server with live reload capability.
Acorn - A small, fast, JavaScript-based JavaScript parser
ESLint - Find and fix problems in your JavaScript code.
estree - The ESTree Spec
Lebab - Turn your ES5 code into readable ES6. Lebab does the opposite of what Babel does.
babel-plugin-handbook - How to create Babel plugins
dark-mode - Control the macOS dark mode from the command-line
esprima - ECMAScript parsing infrastructure for multipurpose analysis
ECMAScript 6 compatibility table - ECMAScript compatibility tables
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