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