@ariestools/indexed-db
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Base functionality used throughout XY Labs TypeScript/JavaScript libraries
Base functionality used throughout XY Labs TypeScript/JavaScript libraries
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See the LICENSE file for license rights and limitations (LGPL-3.0-only).
### .temp-typedoc
### classes
### <a id="IndexedDbKeyValueStore"></a>IndexedDbKeyValueStore
An IndexedDB key/value store.
T extends DBSchema
S extends StoreNames<T>
KeyValueStore<StoreValue<T, S>, StoreKey<T, S>>new IndexedDbKeyValueStore<T, S>(dbName, storeName): IndexedDbKeyValueStore<T, S>;
string
S
IndexedDbKeyValueStore<T, S>
readonly dbName: string;
The name of the IndexedDB database.
readonly storeName: S;
The name of the object store within the database.
optional clear(): Promise<void>;
Removes all entries from the store.
Promise<void>
KeyValueStore.clear
delete(key): Promise<void>;
Deletes the entry with the given key.
StoreKey<T, S>
The key of the entry to delete
Promise<void>
KeyValueStore.delete
get(key): Promise<StoreValue<T, S> | undefined>;
Retrieves the value associated with the given key.
StoreKey<T, S>
The key to look up
Promise<StoreValue<T, S> | undefined>
The value, or undefined if not found
KeyValueStore.get
optional keys(): Promise<StoreKey<T, S>[]>;
Returns all keys in the store.
Promise<StoreKey<T, S>[]>
KeyValueStore.keys
set(key, value): Promise<void>;
Sets a value for the given key, creating or updating the entry.
StoreKey<T, S>
The key to set
StoreValue<T, S>
The value to store
Promise<void>
KeyValueStore.set
withDb<R>(callback): Promise<R>;
Opens the underlying IndexedDB database and passes it to the callback.
R = StoreValue<T, S>
(db) => R | Promise<R>
Function to execute with the database
Promise<R>
The result of the callback
### functions
### <a id="buildStandardIndexName"></a>buildStandardIndexName
function buildStandardIndexName(index): string;
Given an index description, this will build the index name in standard form
The index description
string
The index name in standard form
### <a id="checkDbNeedsUpgrade"></a>checkDbNeedsUpgrade
function checkDbNeedsUpgrade(
dbName,
stores,
logger?): Promise<number>;
Checks whether any store in the database needs an upgrade and returns the appropriate version number.
string
The name of the database to check
Record<string, [IndexDescription]#../interfaces/IndexDescription>
Map of store names to their expected index descriptions
Logger
Optional logger for diagnostics
Promise<number>
The version to open (current version + 1 if upgrade needed, otherwise current version)
### <a id="createStoreDuringUpgrade"></a>createStoreDuringUpgrade
function createStoreDuringUpgrade<DBTypes>(
db,
storeName,
indexes,
logger?): void;
Creates an object store with the specified indexes during a version upgrade transaction.
DBTypes extends unknown = unknown
IDBPDatabase<DBTypes>
The IndexedDB database instance (during upgrade)
StoreNames<DBTypes>
The name of the store to create
[IndexDescription]#../interfaces/IndexDescription
The index descriptions to create on the store
Logger
Optional logger for diagnostics
void
### <a id="getExistingIndexes"></a>getExistingIndexes
function getExistingIndexes<T>(
db,
storeName,
logger?): Promise<IndexDescription[] | null>;
Retrieves the existing index descriptions for a store. Accepts either a database instance or a database name.
T extends object = object
| string
| IDBPDatabase<ObjectStore<T>>
The IndexedDB database instance or database name
StoreNames<ObjectStore<T>>
The name of the store to inspect
Logger
Optional logger for diagnostics
Promise<[IndexDescription]#../interfaces/IndexDescription | null>
An array of index descriptions, or null if the store does not exist
### <a id="withDb"></a>withDb
function withDb<DBTypes, R>(
dbName,
callback,
expectedIndexes?,
logger?,
lock?): Promise<R>;
Opens an IndexedDB database, automatically upgrading if needed, and passes it to the callback. Uses a mutex to serialize access to the same database by default.
DBTypes extends unknown = unknown
R = object
string
The name of the database to open
(db) => R | Promise<R>
Function to execute with the opened database
Record<string, [IndexDescription]#../interfaces/IndexDescription>
Optional map of store names to their expected indexes (triggers upgrade check)
Logger
Optional logger for diagnostics
boolean = true
Whether to use a mutex to serialize access (defaults to true)
Promise<R>
The result of the callback
### <a id="withDbByVersion"></a>withDbByVersion
function withDbByVersion<DBTypes, R>(
dbName,
callback,
version?,
expectedIndexes?,
logger?,
lock?): Promise<R>;
Opens an IndexedDB database at a specific version, handling upgrade events, and passes it to the callback. The database is automatically closed after the callback completes.
DBTypes extends unknown = unknown
R = object
string
The name of the database to open
(db) => R | Promise<R>
Function to execute with the opened database
number
Optional specific version to open (undefined for latest)
Record<string, [IndexDescription]#../interfaces/IndexDescription>
Optional map of store names to indexes to create during upgrade
Logger
Optional logger for diagnostics
boolean = true
Whether to use a mutex to serialize access (defaults to true)
Promise<R>
The result of the callback
### <a id="withReadOnlyStore"></a>withReadOnlyStore
function withReadOnlyStore<T, R>(
db,
storeName,
callback,
logger?): Promise<R>;
Opens a read-only transaction on the specified store and passes it to the callback.
T extends object = object
R = T
IDBPDatabase<ObjectStore<T>>
The IndexedDB database instance
StoreNames<ObjectStore<T>>
The name of the object store to open
(store) => R | Promise<R>
Function to execute with the read-only store
Logger
Optional logger for diagnostics
Promise<R>
The result of the callback
### <a id="withReadWriteStore"></a>withReadWriteStore
function withReadWriteStore<T, R>(
db,
storeName,
callback,
logger?): Promise<R>;
Opens a read-write transaction on the specified store and passes it to the callback.
T extends object = object
R = T
IDBPDatabase<ObjectStore<T>>
The IndexedDB database instance
StoreNames<ObjectStore<T>>
The name of the object store to open
(store) => R | Promise<R>
Function to execute with the read-write store
Logger
Optional logger for diagnostics
Promise<R>
The result of the callback
### <a id="withStore"></a>withStore
function withStore<T, R, M>(
db,
storeName,
callback,
mode,
logger?): Promise<R>;
Opens a transaction on the specified store with the given mode and passes the store to the callback. If the store does not exist, the callback receives null.
T extends object = object
R = T
M extends "readonly" | "readwrite" = "readonly"
IDBPDatabase<ObjectStore<T>>
The IndexedDB database instance
StoreNames<ObjectStore<T>>
The name of the object store to open
(store) => R | Promise<R>
Function to execute with the store (or null if it doesn't exist)
M
The transaction mode ('readonly' or 'readwrite')
Logger
Optional logger for diagnostics
Promise<R>
The result of the callback
### interfaces
### <a id="IndexDescription"></a>IndexDescription
Description of index(es) to be created on a store
key: Record<string, IndexDirection>;
The key(s) to index
optional multiEntry?: boolean;
Is the indexed value an array
optional unique?: boolean;
If true, the index must enforce uniqueness on the key
### type-aliases
### <a id="IndexDirection"></a>IndexDirection
type IndexDirection = -1 | 1;
The index direction (1 for ascending, -1 for descending)
### <a id="ObjectStore"></a>ObjectStore
type ObjectStore<T> = Record<string, T>;
Generic IndexedDB schema type that maps store names to their value types.
T extends EmptyObject = EmptyObject
### variables
### <a id="IndexSeparator"></a>IndexSeparator
const IndexSeparator: "-" = '-';
Separator used between key names when building standard index names.
FAQs
Base functionality used throughout XY Labs TypeScript/JavaScript libraries
We found that @ariestools/indexed-db demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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