var traverse = require("../../traverse");
var t = require("../../types");
var _ = require("lodash");
exports.Program =
exports.BlockStatement =
exports.ForInStatement =
exports.ForOfStatement =
exports.ForStatement = function (node, parent, file) {
var constants = {};
var check = function (parent, names) {
_.each(names, function (nameNode, name) {
if (!_.has(constants, name)) return;
Iif (parent && t.isBlockStatement(parent) && parent !== constants[name]) return;
throw file.errorWithNode(nameNode, name + " is read-only");
});
};
var getIds = function (node) {
return t.getIds(node, true, ["MemberExpression"]);
};
_.each(node.body, function (child, parent) {
if (child && t.isVariableDeclaration(child, { kind: "const" })) {
_.each(child.declarations, function (declar) {
_.each(getIds(declar), function (nameNode, name) {
var names = {};
names[name] = nameNode;
check(parent, names);
constants[name] = parent;
});
declar._ignoreConstant = true;
});
child._ignoreConstant = true;
child.kind = "let";
}
});
if (_.isEmpty(constants)) return;
traverse(node, function (child, parent) {
if (child._ignoreConstant) return;
if (t.isVariableDeclaration(child)) return;
if (t.isVariableDeclarator(child) || t.isDeclaration(child) || t.isAssignmentExpression(child)) {
check(parent, getIds(child));
}
});
};
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