Initial version

Author: malthe

.gitignore

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+.DS_Store
+.rpt2_cache
+node_modules
+coverage
+dist
+

.travis.yml

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+language: node_js
+branches:
+  only:
+    - master
+cache:
+  yarn: true
+  directories:
+    - node_modules
+notifications:
+  email: false
+node_js:
+  - node
+script:
+  - npm run test:prod && npm run build

LICENSE

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+Copyright 2017 Malthe Borch <[email protected]>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.

README.md

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+# ts-postgres
+
+[![Build Status](https://secure.travis-ci.org/malthe/ts-postgres.svg?branch=master)](http://travis-ci.org/malthe/ts-postgres)
+<span class="badge-npmversion"><a href="https://npmjs.org/package/ts-postgres" title="View this project on NPM"><img src="https://img.shields.io/npm/v/ts-postgres.svg" alt="NPM version" /></a></span>
+<span class="badge-npmdownloads"><a href="https://npmjs.org/package/ts-postgres" title="View this project on NPM"><img src="https://img.shields.io/npm/dm/ts-postgres.svg" alt="NPM downloads" /></a></span>
+
+Non-blocking PostgreSQL client for Node.js written in TypeScript.
+
+### Install
+
+```sh
+$ npm install ts-postgres
+```
+
+### Features
+
+* Binary protocol
+* Pipelined queries
+* Extensible value model
+* Flexible query result
+  * Asynchronous iteration or all-at-once
+  * Result data is available in either array or map form
+
+---
+
+## Usage
+
+The client uses an async/await-based programming model.
+
+The default result value is simply "arrays of arrays" (rows and columns). To get each row as a map from column names to values use the ``asMapArray()`` method as illustrated in the following example.
+
+```typescript
+import { Client } from 'ts-postgres';
+const client = new Client();
+
+await client.connect()
+
+const query = client.query('SELECT $1::text as message', ['Hello world!']);
+const result = await query.asMapArray();
+console.log(result[0].get('message'));
+
+await client.end()
+```
+
+## Notes
+
+Queries are sent using the prepared statement variant of the extended query protocol. In this variant, the type of each parameter is determined prior to parameter binding, ensuring that values are encoded in the correct format.
+
+Multiple queries can be sent at once, without waiting for results. The client automatically manages the pipeline and maps the result data to the corresponding promise. Note that each client opens exactly one connection to the database and thus, concurrent queries ultimately execute "first in, first out" on the database side.
+
+## Benchmarking
+
+Use the following environment variable to run tests in "benchmark" mode.
+
+```bash
+$ NODE_ENV=benchmark npm run test
+```
+
+## Support
+
+ts-postgres is free software.  If you encounter a bug with the library please open an issue on the [GitHub repo](https://github.com/malthe/ts-postgres).
+
 ## License
 
 Copyright (c) 2018 Malthe Borch ([email protected])

package.json

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+{
+    "name": "ts-postgres",
+    "version": "0.1.0",
+    "description": "PostgreSQL client in TypeScript",
+    "declaration": true,
+    "keywords": [
+        "database",
+        "postgres",
+        "postgresql",
+        "rdbms"
+    ],
+    "homepage": "https://github.com/malthe/ts-postgres",
+    "main": "dist/src/index.js",
+    "types": "dist/src/index.d.ts",
+    "author": "Malthe Borch <[email protected]>",
+    "dependencies": {
+        "ts-typed-events": "^1.1.1"
+    },
+    "repository": {
+        "type": "git",
+        "url": "git://github.com/malthe/ts-postgres.git"
+    },
+    "license": "MIT",
+    "engines": {
+        "node": ">=10.7.0"
+    },
+    "minNativeVersion": "2.3.0",
+    "scripts": {
+        "lint": "tslint  --project tsconfig.json -t codeFrame 'src/**/*.ts' 'test/**/*.ts'",
+        "prebuild": "rimraf dist",
+        "build": "tsc",
+        "test": "jest --verbose",
+        "test:watch": "jest --watch",
+        "test:prod": "npm run lint && npm run test -- --coverage --no-cache"
+    },
+    "jest": {
+        "transform": {
+            "^.+\\.ts$": "ts-jest"
+        },
+        "testEnvironment": "node",
+        "testRegex": "(/__tests__/.*|\\.(test|spec))\\.ts$",
+        "moduleFileExtensions": [
+            "ts",
+            "js"
+        ],
+        "coveragePathIgnorePatterns": [
+            "/node_modules/",
+            "/test/"
+        ],
+        "coverageThreshold": {
+            "global": {
+                "branches": 70,
+                "functions": 85,
+                "lines": 85,
+                "statements": 85
+            }
+        },
+        "collectCoverage": true
+    },
+    "prettier": {
+        "semi": true,
+        "singleQuote": true
+    },
+    "devDependencies": {
+        "@types/jest": "^22.0.0",
+        "@types/node": "^10.11.0",
+        "colors": "^1.1.2",
+        "jest": "^22.0.2",
+        "lint-staged": "^7.1.3",
+        "prettier": "^1.13.4",
+        "prompt": "^1.0.0",
+        "rimraf": "^2.6.1",
+        "ts-jest": "^23.10.2",
+        "ts-node": "^6.0.0",
+        "tslint": "^5.8.0",
+        "tslint-config-prettier": "^1.1.0",
+        "tslint-config-standard": "^7.0.0",
+        "typescript": "^3.1.1"
+    }
+}

src/buffer.ts

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+export class ElasticBuffer {
+    public offset = 0;
+    private buffer: Buffer;
+
+    constructor(size: number) {
+        this.buffer = Buffer.allocUnsafe(size);
+    }
+
+    clear() {
+        this.offset = 0;
+    }
+
+    isEmpty() {
+        return this.offset === 0;
+    }
+
+    reserve(size: number) {
+        let length = this.buffer.length;
+        const offset = this.offset;
+        const available = length - offset;
+
+        if (available < size) {
+            while (available + length < size) length *= 2;
+            const buffer = Buffer.allocUnsafe(length * 2);
+            this.buffer.copy(buffer, 0, 0, offset);
+            this.buffer = buffer;
+        }
+    }
+
+    getBuffer(size: number) {
+        const offset = this.offset;
+        this.reserve(size);
+        this.offset += size;
+        return this.buffer.slice(offset, offset + size);
+    }
+
+    slice(start?: number, end?: number) {
+        if (typeof end === 'undefined') end = this.offset;
+        return this.buffer.slice(start, end)
+    }
+}