39 lines
1.2 KiB
TypeScript
39 lines
1.2 KiB
TypeScript
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import { DB } from "../src/db.ts";
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import { loadFile, writeFile } from "./vfs.js";
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import { compile, instantiateBrowser } from "../build/sqlite.js";
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export { SqliteError } from "../src/error.ts";
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export { Status } from "../src/constants.ts";
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const hasCompiled = compile();
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/**
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* Opens a database with the given name. If `file` is
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* not provided or `:memory:`, an in-memory database
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* is returned which will not persist after the database
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* is closed.
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*/
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export async function open(file?: string): Promise<DB> {
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if (file != null && file !== ":memory:") await loadFile(file);
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await hasCompiled;
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await instantiateBrowser();
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return new DB(file);
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}
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/**
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* Overwrite a given file with arbitrary data. This can be used
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* to import a database which can later be opened.
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*/
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export async function write(file: string, data: Uint8Array): Promise<void> {
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await writeFile(file, data);
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}
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/**
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* Read the data currently stored for a given file. This can be used
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* to export a database which has been created or modified.
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*/
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export async function read(file: string): Promise<Uint8Array | null> {
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const buffer = await loadFile(file);
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return buffer?.toUint8Array()?.slice();
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}
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