feat: Initial clean release of CHM

packages/lib/database-driver.ts

@@ -0,0 +1,27 @@
+
+interface DatabaseOptions {
+	name: string;
+}
+export type DatabaseOpenOptions = DatabaseOptions;
+export type DatabaseCloseOptions = DatabaseOptions;
+
+export type SqlSelectParams = (string|number|boolean)[];
+
+// SQLite driver results are heterogeneous: selectOne returns a single row object,
+// selectAll returns an array of row objects, and rows have arbitrary column shapes.
+// Callers narrow further via the underlying model entity types.
+export type SelectResult = unknown;
+
+interface DatabaseDriver {
+	open(options: DatabaseOpenOptions): Promise<void>;
+	deleteDatabase(options: DatabaseCloseOptions): Promise<void>;
+
+	selectOne(sql: string, params: SqlSelectParams): Promise<SelectResult>;
+	selectAll(sql: string, params: SqlSelectParams): Promise<SelectResult>;
+
+	// May or may not return the output of the command
+	// TODO: Make this consistent
+	exec(sql: string, params: SqlSelectParams): Promise<void|SelectResult>;
+}
+
+export default DatabaseDriver;