first commit

common/resources/client/uploads/uploader/strategy/upload-strategy.ts

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+import {BackendMetadata} from '../../types/backend-metadata';
+import {Restrictions} from '../validate-upload';
+import {FileEntry} from '../../file-entry';
+import {UploadedFile} from '@common/uploads/uploaded-file';
+
+export interface UploadStrategyConfig {
+  chunkSize?: number;
+  baseUrl?: string;
+  restrictions?: Restrictions;
+  showToastOnRestrictionFail?: boolean;
+  onProgress?: (progress: {bytesUploaded: number; bytesTotal: number}) => void;
+  onSuccess?: (entry: FileEntry, file: UploadedFile) => void;
+  onError?: (message: string | undefined | null, file: UploadedFile) => void;
+  metadata?: BackendMetadata;
+}
+
+export interface UploadStrategy {
+  start: () => void;
+  abort: () => Promise<void>;
+}