var util = require("../../util");
var t = require("../../types");
exports.Function = function (node, parent, file) {
if (!node.rest) return;
var rest = node.rest;
delete node.rest;
t.ensureBlock(node);
var argsId = t.identifier("arguments");
argsId._ignoreAliasFunctions = true;
var start = t.literal(node.params.length);
var key = file.generateUidIdentifier("key");
var arrKey = key;
if (node.params.length) {
arrKey = t.binaryExpression("-", arrKey, start);
}
node.body.body.unshift(
t.variableDeclaration("var", [
t.variableDeclarator(rest, t.arrayExpression([]))
]),
util.template("rest", {
ARGUMENTS: argsId,
ARRAY_KEY: arrKey,
START: start,
ARRAY: rest,
KEY: key
})
);
};
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