Halstead complexity measures for ESTree
npm install estree-halstead[Halstead complexity measures] for ESTree.
Calculate complexity using [Halstead complexity measures] from an ESTree-compliant AST.
``bash`
npm install estree-halstead
`js
import { analyze } from 'estree-halstead'
import acorn from 'acorn'
const ast = acorn.parse(sourceCode, options); // https://github.com/acornjs/acorn
const result / : Result / = analyze(ast)
console.log(result)
// declare type Result = {
// vocabulary: number;
// length: number;
// volume: number;
// difficulty: number;
// effort: number;
// time: number;
// deliveredBugs: number;
// };
``
[Halstead complexity measures]: https://en.wikipedia.org/wiki/Halstead_complexity_measures
Note:
The calculation uses the AST, so tokens not included in the AST, such as semicolons and unwanted parenthesis tokens, are ignored.
This means that the calculation result is format independent.