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Making statements generic #150

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Making statements generic #150

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4 changes: 2 additions & 2 deletions src/database.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -276,8 +276,8 @@ export class Database {
* @param sql SQL statement string
* @returns Statement object
*/
prepare(sql: string): Statement {
return new Statement(this, sql);
prepare<T extends object = Record<string, any>>(sql: string): Statement<T> {
return new Statement<T>(this, sql);
}

/**
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6 changes: 3 additions & 3 deletions src/statement.ts
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Expand Up @@ -135,7 +135,7 @@ function getColumn(handle: Deno.PointerValue, i: number, int64: boolean): any {
*
* See `Database#prepare` for more information.
*/
export class Statement {
export class Statement<TStatement extends object = Record<string, any>> {
#handle: Deno.PointerValue;
#finalizerToken: { handle: Deno.PointerValue };
#bound = false;
Expand Down Expand Up @@ -188,7 +188,7 @@ export class Statement {
* Run the query and return the resulting rows where rows are objects
* mapping column name to their corresponding values.
*/
all<T extends object = Record<string, any>>(
all<T extends object = TStatement>(
...args: RestBindParameters
): T[] {
return this.#allWithArgs(...args);
Expand Down Expand Up @@ -626,7 +626,7 @@ export class Statement {
}

/** Fetch only first row as an object, if any. */
get<T extends object>(
get<T extends object = TStatement>(
...params: RestBindParameters
): T | undefined {
const handle = this.#handle;
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