next
Version:
The React Framework
48 lines (47 loc) • 1.55 kB
JavaScript
import { readFileSync } from 'fs';
import { runInNewContext } from 'vm';
import { deepFreeze } from '../shared/lib/deep-freeze';
const sharedCache = new Map();
export function loadManifest(path, shouldCache = true, cache = sharedCache) {
const cached = shouldCache && cache.get(path);
if (cached) {
return cached;
}
let manifest = JSON.parse(readFileSync(path, 'utf8'));
// Freeze the manifest so it cannot be modified if we're caching it.
if (shouldCache) {
manifest = deepFreeze(manifest);
}
if (shouldCache) {
cache.set(path, manifest);
}
return manifest;
}
export function evalManifest(path, shouldCache = true, cache = sharedCache) {
const cached = shouldCache && cache.get(path);
if (cached) {
return cached;
}
const content = readFileSync(path, 'utf8');
if (content.length === 0) {
throw Object.defineProperty(new Error('Manifest file is empty'), "__NEXT_ERROR_CODE", {
value: "E328",
enumerable: false,
configurable: true
});
}
let contextObject = {};
runInNewContext(content, contextObject);
// Freeze the context object so it cannot be modified if we're caching it.
if (shouldCache) {
contextObject = deepFreeze(contextObject);
}
if (shouldCache) {
cache.set(path, contextObject);
}
return contextObject;
}
export function clearManifestCache(path, cache = sharedCache) {
return cache.delete(path);
}
//# sourceMappingURL=load-manifest.js.map