babel-plugin-foreach

gistfile1.js

function forEachTransform (babel) {
	var t = babel.types;

	return new babel.Transformer('plugin-foreach', {
		CallExpression: function (node, parent) {
			var callee = node.callee;
			
			if (callee.property.name === 'forEach') {
				
				var arrayName = callee.object.name;
				var forEachCallback = node.arguments[0];
				var currentValueName = forEachCallback.params[0].name;
				
				var init = t.variableDeclaration('var', [
								t.variableDeclarator(
									t.identifier('i'), 
									t.literal(0)
								)
							]);
				var test = t.binaryExpression(
								'<',
								t.identifier('i'), 
								t.memberExpression(
									t.identifier(arrayName),
									t.identifier('length')
								)
							);
				var update = t.updateExpression('++',
								t.identifier('i'),
								false
							);
				var body = forEachCallback.body;

				var forStatement = t.forStatement(init, test, update, body);
				console.log('statement', forStatement);
				
				return forStatement;


			}
		}
	});
}

module.exports = forEachTransform;