diff --git a/README.md b/README.md index 9fb7ff1..6dbbb21 100644 --- a/README.md +++ b/README.md @@ -2,7 +2,7 @@ SQLite Wasm conveniently wrapped as an ES Module. -> **Warning** +> [!Warning] > > This project wraps the code of > [SQLite Wasm](https://sqlite.org/wasm/doc/trunk/index.md) with _no_ changes, @@ -32,7 +32,7 @@ storage back-end. ### In a wrapped worker (with OPFS if available): -> **Warning** +> [!Warning] > > For this to work, you need to set the following headers on your server: > @@ -43,35 +43,29 @@ storage back-end. ```js import { sqlite3Worker1Promiser } from '@sqlite.org/sqlite-wasm'; -const log = (...args) => console.log(...args); -const error = (...args) => console.error(...args); +const log = console.log; +const error = console.error; -(async () => { +const initializeSQLite = async () => { try { log('Loading and initializing SQLite3 module...'); const promiser = await new Promise((resolve) => { - const _promiser = sqlite3Worker1Promiser({ - onready: () => { - resolve(_promiser); - }, - }); + const _promiser = sqlite3Worker1Promiser({ onready: () => resolve(_promiser) }); }); log('Done initializing. Running demo...'); - let response; + const configResponse = await promiser('config-get', {}); + log('Running SQLite3 version', configResponse.result.version.libVersion); - response = await promiser('config-get', {}); - log('Running SQLite3 version', response.result.version.libVersion); - - response = await promiser('open', { + const openResponse = await promiser('open', { filename: 'file:mydb.sqlite3?vfs=opfs', }); - const { dbId } = response; + const { dbId } = openResponse; log( 'OPFS is available, created persisted database at', - response.result.filename.replace(/^file:(.*?)\?vfs=opfs$/, '$1'), + openResponse.result.filename.replace(/^file:(.*?)\?vfs=opfs$/, '$1') ); // Your SQLite code here. } catch (err) { @@ -80,7 +74,9 @@ const error = (...args) => console.error(...args); } error(err.name, err.message); } -})(); +}; + +initializeSQLite(); ``` The `promiser` object above implements the @@ -88,7 +84,7 @@ The `promiser` object above implements the ### In a worker (with OPFS if available): -> **Warning** +> [!Warning] > > For this to work, you need to set the following headers on your server: > @@ -105,34 +101,34 @@ const worker = new Worker('worker.js', { type: 'module' }); // In `worker.js`. import sqlite3InitModule from '@sqlite.org/sqlite-wasm'; -const log = (...args) => console.log(...args); -const error = (...args) => console.error(...args); +const log = console.log; +const error = console.error; -const start = function (sqlite3) { +const start = (sqlite3) => { log('Running SQLite3 version', sqlite3.version.libVersion); - let db; - if ('opfs' in sqlite3) { - db = new sqlite3.oo1.OpfsDb('/mydb.sqlite3'); - log('OPFS is available, created persisted database at', db.filename); - } else { - db = new sqlite3.oo1.DB('/mydb.sqlite3', 'ct'); - log('OPFS is not available, created transient database', db.filename); - } + const db = 'opfs' in sqlite3 + ? new sqlite3.oo1.OpfsDb('/mydb.sqlite3') + : new sqlite3.oo1.DB('/mydb.sqlite3', 'ct'); + log( + 'opfs' in sqlite3 + ? `OPFS is available, created persisted database at ${db.filename}` + : `OPFS is not available, created transient database ${db.filename}` + ); // Your SQLite code here. }; -log('Loading and initializing SQLite3 module...'); -sqlite3InitModule({ - print: log, - printErr: error, -}).then((sqlite3) => { - log('Done initializing. Running demo...'); +const initializeSQLite = async () => { try { + log('Loading and initializing SQLite3 module...'); + const sqlite3 = await sqlite3InitModule({ print: log, printErr: error }); + log('Done initializing. Running demo...'); start(sqlite3); } catch (err) { - error(err.name, err.message); + error('Initialization error:', err.name, err.message); } -}); +}; + +initializeSQLite(); ``` The `db` object above implements the @@ -143,27 +139,30 @@ The `db` object above implements the ```js import sqlite3InitModule from '@sqlite.org/sqlite-wasm'; -const log = (...args) => console.log(...args); -const error = (...args) => console.error(...args); +const log = console.log; +const error = console.error; -const start = function (sqlite3) { +const start = (sqlite3) => { log('Running SQLite3 version', sqlite3.version.libVersion); const db = new sqlite3.oo1.DB('/mydb.sqlite3', 'ct'); // Your SQLite code here. }; -log('Loading and initializing SQLite3 module...'); -sqlite3InitModule({ - print: log, - printErr: error, -}).then((sqlite3) => { +const initializeSQLite = async () => { try { + log('Loading and initializing SQLite3 module...'); + const sqlite3 = await sqlite3InitModule({ + print: log, + printErr: error, + }); log('Done initializing. Running demo...'); start(sqlite3); } catch (err) { - error(err.name, err.message); + error('Initialization error:', err.name, err.message); } -}); +}; + +initializeSQLite(); ``` The `db` object above implements the