export function saveKeyedElements(container) {
const saved = new Map;
const children = container.querySelectorAll(".keyed");
for (const child of children) {
saved.set(child.id, child);
}
return saved;
}
function assertEq(a, b, msg) {
if (a !== b) {
throw new Error(`assertEq failed: ${a} !== ${b}; ${msg}`);
}
}
export function checkKeyedElements(container, saved) {
const children = container.querySelectorAll(".keyed");
for (const child of children) {
console.log(`checking child=${child.outerHTML}`);
const original = saved.get(child.id);
if (original) {
assertEq(original, child, `did not preserve child with key=${child.id}`);
}
}
}