dawn.js

library0.1.1jsnpmunverified

dawn.js is a general-purpose source-to-source transpiler framework implemented in JavaScript (CoffeeScript). Version 0.1.1 provides built-in lexical parser, syntax parser (with AST generation), symbol table generator, and a customizable plugin system (Flow) for transforming code between languages. It targets developers needing autocompletion, refactoring, or cross-language compilation features. Released under MIT, but appears to be early-stage with limited documentation and infrequent updates compared to established alternatives like Babel or Recast.

serialization

npm install dawn.js

github ↗package ↗

INSTALL

IMPORT

SIG · DAWN.JS

dawn.js

serializationjavascriptv0.1.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

LexParser

✓ import { LexParser } from 'dawn.js'

✗ const dawn = require('dawn.js'); new dawn.LexParser()

Package uses ES6 modules; ensure bundler configured for ESM.

SyntaxParser

✓ import { SyntaxParser } from 'dawn.js'

✗ import SyntaxParser from 'dawn.js'

SyntaxParser is a named export, not default.

Flow

✓ import { Flow } from 'dawn.js'

✗ const Flow = require('dawn.js').Flow

Flow is the plugin system; available as named export.

Demonstrates basic lexical and syntax parsing, and symbol table generation using dawn.js.

import { LexParser, SyntaxParser, SymbolTable, Flow } from 'dawn.js'; const code = `const x = 1 + 2;`; // Lexical analysis const lexer = new LexParser(); const tokens = lexer.analyze(code); console.log('Tokens:', tokens); // Syntax analysis (requires BNF grammar definition) // Minimal example using built-in grammar? Not explicitly provided. // Assume BNF grammar string: const bnf = ` <program> ::= <statement> <statement> ::= <assignment> <assignment> ::= "const" <identifier> "=" <expression> ";" <expression> ::= <number> "+" <number> `; const syntaxParser = new SyntaxParser(bnf); const ast = syntaxParser.parse(tokens); console.log('AST:', ast); // Symbol table const symbolTable = new SymbolTable(); symbolTable.build(ast); console.log('Symbols:', symbolTable); // Plugin system placeholder const flow = new Flow(); // flow.addPlugin(...);

Debug

Known issues

deprecatedPackage appears abandoned; last update was years ago.

fix

Consider alternatives like Babel, Recast, or SWC for active transpilation needs.

affects: *

Errors

Common errors & fixes

Error: Cannot find module 'dawn.js'

Package not installed or wrong import path.

fix

npm install dawn.js (note: npm package name is dawn.js with dot)

TypeError: dawn.LexParser is not a constructor

Incorrect import style (CommonJS vs ESM).

fix

Use import { LexParser } from 'dawn.js' instead of require.

Upgrade

Version history

0.1.1latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

3 hits · last 30 days

node

Resources

githubhttps://github.com/qdwang/dawn.js ↗

packagehttps://www.npmjs.com/package/dawn.js ↗