export async function loadPackagesAndModulesOfSnapshot(snapshot) {
// embedded package definitions
if (snapshot.packagesToRegister) {
for (let pName of snapshot.packagesToRegister) {
try { await registerPackage(pName); } catch (err) {
console.error(`Failed to register package ${pName}`);
}
}
}
if (snapshot.packages) {
let packages = packagesOfSnapshot(snapshot);
for (let { files, url } of packages) {
// if a package with the same url already is loaded in the runtime then
// compare its version with the version of the package that gets loaded. If
// the version to-load is older, keep the newer version.
// FIXME: ensure old objects continue to work!
let packageLookup = lookupPackage(url),
p = packageLookup && packageLookup.pkg;
if (p) {
let loadedVersion = p.version,
{version: versionInSpec} = JSON.parse(files["package.json"]);
try {
if (versionInSpec && loadedVersion &&
semver.lte(versionInSpec, loadedVersion, true)) {
console.log(`[load morph] Package ${url} is loaded in version ${loadedVersion}`
+ ` which is newer than ${versionInSpec}. Will NOT load older variant.`);
continue;
}
} catch (err) {
console.warn(`Error in package version comparison: `, err);
}
}
let r = await createFiles(url, files);
p = await ensurePackage(url);
await p.reload({forgetEnv: false, forgetDeps: false});
// ensure object package instance
const { default: ObjectPackage } = await System.import("lively.classes/object-classes.js");
objectScriptingEnabled = !!ObjectPackage;
objectScriptingEnabled && ObjectPackage.withId(p.name);
}
}
// referenced packages / modules, e.g. b/c instances have classes from them
// load required modules
await Promise.all(
requiredModulesOfSnapshot(snapshot)
.map(modId => (System.get(modId) ? null : System.import(modId))
.catch(e => console.error(`Error loading ${modId}`, e))));
}
export function deserializeMorph(idAndSnapshot, options={}) {
return deserializeWithMigrations(
idAndSnapshot,
options.migrations || migrations,
normalizeOptions(options));
}
export function serializeMorph(m, options) {
return serialize(m, normalizeOptions(options));
}