a2fc4a383eMajor functional changes:
- Allow `import()` to work within loaders that require other loaders,
- Unflag the use of `Module.register`.
A new interface `Customizations` has been created in order to unify
`ModuleLoader` (previously `DefaultModuleLoader`), `Hooks` and
`CustomizedModuleLoader` all of which now implement it:
```ts
interface LoadResult {
format: ModuleFormat;
source: ModuleSource;
}
interface ResolveResult {
format: string;
url: URL['href'];
}
interface Customizations {
allowImportMetaResolve: boolean;
load(url: string, context: object): Promise<LoadResult>
resolve(
originalSpecifier:
string, parentURL: string,
importAssertions: Record<string, string>
): Promise<ResolveResult>
resolveSync(
originalSpecifier:
string, parentURL: string,
importAssertions: Record<string, string>
) ResolveResult;
register(specifier: string, parentUrl: string): any;
forceLoadHooks(): void;
importMetaInitialize(meta, context, loader): void;
}
```
The `ModuleLoader` class now has `setCustomizations` which takes an
object of this shape and delegates its responsibilities to this object
if present.
Note that two properties `allowImportMetaResolve` and `resolveSync`
exist now as a mechanism for `import.meta.resolve` – since `Hooks`
does not implement `resolveSync` other loaders cannot use
`import.meta.resolve`; `allowImportMetaResolve` is a way of checking
for that case instead of invoking `resolveSync` and erroring.
Fixes https://github.com/nodejs/node/issues/48515
Closes https://github.com/nodejs/node/pull/48439
PR-URL: https://github.com/nodejs/node/pull/48559
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
14 lines
371 B
JavaScript
14 lines
371 B
JavaScript
import { writeSync } from 'node:fs';
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export async function load(url, context, next) {
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if (url === 'node:fs' || url.includes('loader')) {
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return next(url);
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}
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// Here for asserting dynamic import
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await import('xxx/loader-load-passthru.mjs');
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writeSync(1, 'load dynamic import' + '\n'); // Signal that this specific hook ran
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return next(url, context);
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}
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