{ "name": "client-sql-postgres", "specifier": "@probitas/client-sql-postgres", "version": "0.5.0", "moduleDoc": "PostgreSQL client for [Probitas](https://github.com/probitas-test/probitas) scenario testing framework.\n\nThis package provides a PostgreSQL client designed for integration testing,\nwith transaction support and LISTEN/NOTIFY capabilities.\n\n## Features\n\n- **Query Execution**: Parameterized queries with type-safe results\n- **Transactions**: Full transaction support with isolation levels\n- **LISTEN/NOTIFY**: Real-time notifications for async testing\n- **COPY Protocol**: High-performance bulk data loading\n- **Connection Pooling**: Configurable pool with idle timeout\n- **Resource Management**: Implements `AsyncDisposable` for proper cleanup\n\n## Installation\n\n```bash\ndeno add jsr:@probitas/client-sql-postgres\n```\n\n## Quick Start\n\n```ts\nimport { createPostgresClient } from \"@probitas/client-sql-postgres\";\n\nconst client = await createPostgresClient({\n url: \"postgres://user:pass@localhost:5432/mydb\",\n});\n\n// Query with parameters\nconst result = await client.query<{ id: number; name: string }>(\n \"SELECT id, name FROM users WHERE active = $1\",\n [true]\n);\nconsole.log(result.rows);\n\n// Get first row\nconst user = await client.queryOne<{ id: number; name: string }>(\n \"SELECT * FROM users WHERE id = $1\",\n [1]\n);\n\nawait client.close();\n```\n\n## Transactions\n\n```ts\nimport { createPostgresClient } from \"@probitas/client-sql-postgres\";\nimport type { SqlTransaction } from \"@probitas/client-sql\";\n\nconst client = await createPostgresClient({\n url: \"postgres://localhost:5432/testdb\",\n});\n\nawait client.transaction(async (tx: SqlTransaction) => {\n await tx.query(\"INSERT INTO accounts (id, balance) VALUES ($1, $2)\", [1, 100]);\n await tx.query(\"INSERT INTO accounts (id, balance) VALUES ($1, $2)\", [2, 200]);\n // Automatically committed if no error, rolled back on exception\n}, { isolationLevel: \"serializable\" });\n\nawait client.close();\n```\n\n## LISTEN/NOTIFY\n\n```ts\nimport { createPostgresClient } from \"@probitas/client-sql-postgres\";\n\nconst client = await createPostgresClient({\n url: \"postgres://localhost:5432/testdb\",\n});\n\n// Listen for notifications\nconst listener = await client.listen(\"events\");\nfor await (const notification of listener) {\n console.log(\"Received:\", notification.payload);\n break;\n}\n\n// Send notification\nawait client.notify(\"events\", JSON.stringify({ type: \"created\", id: 123 }));\n\nawait client.close();\n```\n\n## Using with `using` Statement\n\n```ts\nimport { createPostgresClient } from \"@probitas/client-sql-postgres\";\n\nawait using client = await createPostgresClient({\n url: \"postgres://localhost:5432/testdb\",\n});\n\nconst result = await client.query(\"SELECT 1 as n\");\n// Client automatically closed when block exits\n```\n\n## Related Packages\n\n| Package | Description |\n|---------|-------------|\n| [`@probitas/client-sql`](https://jsr.io/@probitas/client-sql) | Common SQL types and utilities |\n| [`@probitas/client-sql-mysql`](https://jsr.io/@probitas/client-sql-mysql) | MySQL client |\n| [`@probitas/client-sql-sqlite`](https://jsr.io/@probitas/client-sql-sqlite) | SQLite client |\n| [`@probitas/client-sql-duckdb`](https://jsr.io/@probitas/client-sql-duckdb) | DuckDB client |\n\n## Links\n\n- [GitHub Repository](https://github.com/probitas-test/probitas-client)\n- [Probitas Framework](https://github.com/probitas-test/probitas)\n- [PostgreSQL](https://www.postgresql.org/)\n", "exports": [ { "name": "PostgresClient", "isDefault": false, "location": { "filename": "https://jsr.io/@probitas/client-sql-postgres/0.5.0/client.ts", "line": 28, "col": 0, "byteIndex": 751 }, "declarationKind": "export", "jsDoc": { "doc": "PostgreSQL client interface." }, "kind": "interface", "interfaceDef": { "extends": [ { "repr": "AsyncDisposable", "kind": "typeRef", "typeRef": { "typeParams": null, 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"line": 611, "col": 0, "byteIndex": 16596 }, "declarationKind": "export", "jsDoc": { "doc": "Create a new PostgreSQL client instance.\n\nThe client provides connection pooling, parameterized queries, transaction support,\nand PostgreSQL-specific features like COPY and LISTEN/NOTIFY.\n", "tags": [ { "kind": "param", "name": "config", "doc": "- PostgreSQL client configuration" }, { "kind": "return", "doc": "A promise resolving to a new PostgreSQL client instance\n" }, { "kind": "example", "doc": "Using URL string\n```ts\nimport { createPostgresClient } from \"@probitas/client-sql-postgres\";\n\nconst client = await createPostgresClient({\n url: \"postgres://user:pass@localhost:5432/mydb\",\n});\n\nconst result = await client.query(\"SELECT * FROM users WHERE id = $1\", [1]);\nif (result.ok) {\n console.log(result.rows[0]);\n}\n\nawait client.close();\n```\n" }, { "kind": "example", "doc": "Using connection config object\n```ts\nimport { createPostgresClient } from \"@probitas/client-sql-postgres\";\n\nconst client = await createPostgresClient({\n url: {\n host: \"localhost\",\n port: 5432,\n database: \"mydb\",\n username: \"user\",\n password: \"pass\",\n },\n pool: { max: 10 },\n applicationName: \"my-app\",\n});\n\nawait client.close();\n```\n" }, { "kind": "example", "doc": "Transaction with auto-commit/rollback\n```ts\nimport { createPostgresClient } from \"@probitas/client-sql-postgres\";\nimport type { SqlTransaction } from \"@probitas/client-sql\";\n\nconst client = await createPostgresClient({\n url: \"postgres://localhost:5432/mydb\",\n});\n\nconst user = await client.transaction(async (tx: SqlTransaction) => {\n await tx.query(\"INSERT INTO users (name) VALUES ($1)\", [\"John\"]);\n return await tx.queryOne(\"SELECT * FROM users WHERE name = $1\", [\"John\"]);\n});\n\nawait client.close();\n```\n" }, { "kind": "example", "doc": "LISTEN/NOTIFY for real-time events\n```ts\nimport { createPostgresClient } from 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