ast-redeclare

Hoist variable declarations to the top of scope.

Usage no npm install needed!

<script type="module">
  import astRedeclare from 'https://cdn.skypack.dev/ast-redeclare';
</script>

README

ast-redeclare Build Status

Hoist and fold variable declarations within scopes, so that each variable has only one declaration per scope. Don’t touch functions. Useful to normalize code before analysis, like data-flow etc.

Usage

npm install ast-redeclare

var parse = require('esprima').parse;
var generate = require('escodegen').generate;
var redeclare = require('ast-redeclare');

var ast = parse(
    'var a = 1, b = 2; if (a > 1) { var c = b; } else {var c = 3;} var d = 4;'
);
ast = redeclare(ast);

generate(ast);
//var a, b, c, d; a = 1; b = 2; if (a > 1) { c = b; } else { c = 3; }; d = 4;

API

redeclare(Node) → Node

Analogs

NPM