d2-ui
Version:
38 lines (28 loc) • 1.45 kB
JavaScript
/*istanbul ignore next*/"use strict";
exports.__esModule = true;
exports.visitor = undefined;
var /*istanbul ignore next*/_babelTypes = require("babel-types");
/*istanbul ignore next*/
var t = _interopRequireWildcard(_babelTypes);
/*istanbul ignore next*/
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
var visitor = /*istanbul ignore next*/exports.visitor = { /*istanbul ignore next*/
Function: function Function(path) {
var params = path.get("params");
// If there's a rest param, no need to loop through it. Also, we need to
// hoist one more level to get `declar` at the right spot.
var hoistTweak = t.isRestElement(params[params.length - 1]) ? 1 : 0;
var outputParamsLength = params.length - hoistTweak;
for (var i = 0; i < outputParamsLength; i++) {
var param = params[i];
if (param.isArrayPattern() || param.isObjectPattern()) {
var uid = path.scope.generateUidIdentifier("ref");
var declar = t.variableDeclaration("let", [t.variableDeclarator(param.node, uid)]);
declar._blockHoist = outputParamsLength - i;
path.ensureBlock();
path.get("body").unshiftContainer("body", declar);
param.replaceWith(uid);
}
}
}
};