Inital build

frontend/node_modules/tus-js-client/lib/browser/urlStorage.js

@@ -0,0 +1,71 @@
+let hasStorage = false
+try {
+  // Note: localStorage does not exist in the Web Worker's context, so we must use window here.
+  hasStorage = 'localStorage' in window
+
+  // Attempt to store and read entries from the local storage to detect Private
+  // Mode on Safari on iOS (see #49)
+  // If the key was not used before, we remove it from local storage again to
+  // not cause confusion where the entry came from.
+  const key = 'tusSupport'
+  const originalValue = localStorage.getItem(key)
+  localStorage.setItem(key, originalValue)
+  if (originalValue === null) localStorage.removeItem(key)
+} catch (e) {
+  // If we try to access localStorage inside a sandboxed iframe, a SecurityError
+  // is thrown. When in private mode on iOS Safari, a QuotaExceededError is
+  // thrown (see #49)
+  if (e.code === e.SECURITY_ERR || e.code === e.QUOTA_EXCEEDED_ERR) {
+    hasStorage = false
+  } else {
+    throw e
+  }
+}
+
+export const canStoreURLs = hasStorage
+
+export class WebStorageUrlStorage {
+  findAllUploads() {
+    const results = this._findEntries('tus::')
+    return Promise.resolve(results)
+  }
+
+  findUploadsByFingerprint(fingerprint) {
+    const results = this._findEntries(`tus::${fingerprint}::`)
+    return Promise.resolve(results)
+  }
+
+  removeUpload(urlStorageKey) {
+    localStorage.removeItem(urlStorageKey)
+    return Promise.resolve()
+  }
+
+  addUpload(fingerprint, upload) {
+    const id = Math.round(Math.random() * 1e12)
+    const key = `tus::${fingerprint}::${id}`
+
+    localStorage.setItem(key, JSON.stringify(upload))
+    return Promise.resolve(key)
+  }
+
+  _findEntries(prefix) {
+    const results = []
+
+    for (let i = 0; i < localStorage.length; i++) {
+      const key = localStorage.key(i)
+      if (key.indexOf(prefix) !== 0) continue
+
+      try {
+        const upload = JSON.parse(localStorage.getItem(key))
+        upload.urlStorageKey = key
+
+        results.push(upload)
+      } catch (_e) {
+        // The JSON parse error is intentionally ignored here, so a malformed
+        // entry in the storage cannot prevent an upload.
+      }
+    }
+
+    return results
+  }
+}