56 lines
1.8 KiB
TypeScript
56 lines
1.8 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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export type ImportRef = {
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__pw_type: 'importRef',
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id: string,
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property?: string,
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};
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export function isImportRef(value: any): value is ImportRef {
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return typeof value === 'object' && value && value.__pw_type === 'importRef';
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}
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export class ImportRegistry {
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private _registry = new Map<string, () => Promise<any>>();
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initialize(components: Record<string, () => Promise<any>>) {
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for (const [name, value] of Object.entries(components))
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this._registry.set(name, value);
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}
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async resolveImportRef(importRef: ImportRef): Promise<any> {
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const importFunction = this._registry.get(importRef.id);
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if (!importFunction)
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throw new Error(`Unregistered component: ${importRef.id}. Following components are registered: ${[...this._registry.keys()]}`);
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let importedObject = await importFunction();
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if (!importedObject)
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throw new Error(`Could not resolve component: ${importRef.id}.`);
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if (importRef.property) {
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importedObject = importedObject[importRef.property];
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if (!importedObject)
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throw new Error(`Could not instantiate component: ${importRef.id}.${importRef.property}.`);
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}
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return importedObject;
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}
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}
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declare global {
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interface Window {
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__pwRegistry: ImportRegistry;
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}
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}
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