[ODIN-423] homepage (#38)

* package.json

* wip

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.gitignore

@@ -5,3 +5,5 @@ coverage
 duckdb
 duckdb.tar.gz
 prebuilds
+temp
+etc

README.md

@@ -1,37 +1,97 @@
 # Node-DuckDB
 
+###### [API](https://github.com/deepcrawl/node-duckdb/docs/api/node-duckdb.md) | [Code Of Conduct](https://github.com/deepcrawl/node-duckdb/docs/CODE_OF_CONDUCT.md) | [Contributing](https://github.com/deepcrawl/node-duckdb/docs/CONTRIBUTING.md) | [Developing](https://github.com/deepcrawl/node-duckdb/docs/DEVELOPING.md)
+
+> Production ready DuckDB Node.js library written in TypeScript.
+> [<img src="https://www.deepcrawl.com/wp-content/themes/deepcrawl/images/deepcrawl-logo.svg" height="200" width="300" align="right">](https://www.deepcrawl.com/)
+
 ## Overview
 
 - This is a library that adds support for [DuckDB](https://duckdb.org/) to NodeJS.
-- It comes preinstalled with DuckDB ver 0.2.2 with the parquet extension included.
+- It comes preinstalled with DuckDB ver 0.2.2 with the **parquet** extension included.
 - Has been tested to work with Linux and MacOS.
 - Currently supports NodeJS v12.17.0+.
 - Supports BIGINT and HUGEINT types as [BigInt](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt).
-- Provides an async API and a streaming one.
+- Provides a **Promise**-based API and a **Stream**-based one.
 
-## Using
+## Getting Started
 
-[See examples](https://github.com/deepcrawl/node-duckdb/tree/master/examples)
+### Installation
 
-## Developing
+To use Node-DuckDB in your project:
+
+```
+npm i node-duckdb
+```
+
+or
+
+```
+yarn add node-duckdb
+```
+
+Note: this will download the duckdb binary for your platform (currently Linux and MacOS are supported), or if it's not available will attempt to build it.
+
+### Usage
+
+Using node-duckdb is easy:
+
+```ts
+const db = new DuckDB();
+const connection = new Connection(db);
+await connection.execute("SELECT * FROM mytable;");
+```
+
+#### Promise API example
 
-First build:
+An example using promises:
 
-1. `yarn install` - installs dependencies including downloading duckdb
-2. `yarn build:ts` - builds typescript
-3. `yarn test` - runs all tests
+```ts
+import { Connection, DuckDB } from "node-duckdb";
 
-Other useful scripts:
+async function queryDatabaseWithIterator() {
+  // create new database in memory
+  const db = new DuckDB();
+  // create a new connection to the database
+  const connection = new Connection(db);
 
-- `yarn build` - build everything
-- `yarn build:addon` - build just the bindings code
-- `yarn build:duckdb` - build just the duckdb database
-- `yarn build:ts` - build just the typescript code
-- `yarn lint` - lint the project
-- `yarn test` - run all tests
-- `yarn test csv` - run just the csv test suite
+  // perform some queries
+  await connection.executeIterator("CREATE TABLE people(id INTEGER, name VARCHAR);");
+  await connection.executeIterator("INSERT INTO people VALUES (1, 'Mark'), (2, 'Hannes'), (3, 'Bob');");
+  const result = await connection.executeIterator("SELECT * FROM people;");
 
-## Publishing
+  // fetch and print result
+  console.log(result.fetchAllRows());
+
+  // release resources
+  connection.close();
+  db.close();
+}
+
+queryDatabaseWithIterator();
+```
+
+#### Streaming API example
+
+Getting a stream of data from DuckDB and piping into a destination stream:
+
+```ts
+import { Connection, DuckDB } from "node-duckdb";
+const db = new DuckDB();
+const connection = new Connection(db);
+const resultStream = await connection.execute("SELECT * FROM people;");
+// get destinationStream somehow
+resultStream.pipe(destinationStream);
+```
+
+#### Complete sample project
+
+You can see a complete sample project using node-duckdb [here](https://github.com/deepcrawl/node-duckdb/tree/master/examples).
+
+## API
+
+API documentation is found [here](https://github.com/deepcrawl/node-duckdb/docs/api/node-duckdb.md).
+
+## Developing
 
-- `export GITHUB_TOKEN=<your PAT>` - create a PAT in github that allows uploading artifacts to github releases
-- `yarn login && yarn publish` - publish will do a bunch of various stuff, including prebuilding binaries for linux/mac and publishing those
+Documentation for developers is found [here](https://github.com/deepcrawl/node-duckdb/docs/DEVELOPING.md).

api-extractor.json

@@ -0,0 +1,33 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/api-extractor/v7/api-extractor.schema.json",
+  "mainEntryPointFilePath": "<projectFolder>/dist/index.d.ts",
+  "bundledPackages": [],
+  "compiler": {},
+  "apiReport": {
+    "enabled": true
+  },
+  "docModel": {
+    "enabled": true
+  },
+  "dtsRollup": {
+    "enabled": true
+  },
+  "tsdocMetadata": {},
+  "messages": {
+    "compilerMessageReporting": {
+      "default": {
+        "logLevel": "error"
+      }
+    },
+    "extractorMessageReporting": {
+      "default": {
+        "logLevel": "error"
+      }
+    },
+    "tsdocMessageReporting": {
+      "default": {
+        "logLevel": "error"
+      }
+    }
+  }
+}

docs/DEVELOPING.md

@@ -0,0 +1,22 @@
+## Developing
+
+First build:
+
+1. `yarn install` - installs dependencies including downloading duckdb
+2. `yarn build:ts` - builds typescript
+3. `yarn test` - runs all tests
+
+Other useful scripts:
+
+- `yarn build` - build everything
+- `yarn build:addon` - build just the bindings code
+- `yarn build:duckdb` - build just the duckdb database
+- `yarn build:ts` - build just the typescript code
+- `yarn lint` - lint the project
+- `yarn test` - run all tests
+- `yarn test csv` - run just the csv test suite
+
+## Publishing
+
+- `export GITHUB_TOKEN=<your PAT>` - create a PAT in github that allows uploading artifacts to github releases
+- `yarn login && yarn publish` - publish will do a bunch of various stuff, including prebuilding binaries for linux/mac and publishing those

docs/api/index.md

@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md)
+
+## API Reference
+
+## Packages
+
+| Package                         | Description                                                                                                                                                                                                                                                                                                                                                                                                                                         |
+| ------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| [node-duckdb](./node-duckdb.md) | Node-DuckDB is a thin wrapper on top of [DuckDB](https://duckdb.org/)<!-- -->.<!-- -->Using it involves:<!-- -->1. Creating a [DuckDB](./node-duckdb.duckdb.md) object<!-- -->2. Creating a [Connection](./node-duckdb.connection.md) object to the DuckDB object<!-- -->3. Calling [Connection.execute](./node-duckdb.connection.execute.md) or [Connection.executeIterator](./node-duckdb.connection.executeiterator.md) on the Connection object |

docs/api/node-duckdb.accessmode.md

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+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Node-DuckDB API](./node-duckdb.md) &gt; [AccessMode](./node-duckdb.accessmode.md)
+
+## AccessMode enum
+
+Access mode specifier
+
+<b>Signature:</b>
+
+```typescript
+export declare enum AccessMode
+```
+
+## Enumeration Members
+
+| Member    | Value          | Description |
+| --------- | -------------- | ----------- |
+| Automatic | <code>1</code> |             |
+| ReadOnly  | <code>2</code> |             |
+| ReadWrite | <code>3</code> |             |
+| Undefined | <code>0</code> |             |

docs/api/node-duckdb.connection._constructor_.md

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+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Node-DuckDB API](./node-duckdb.md) &gt; [Connection](./node-duckdb.connection.md) &gt; [(constructor)](./node-duckdb.connection._constructor_.md)
+
+## Connection.(constructor)
+
+Connection constructor.
+
+<b>Signature:</b>
+
+```typescript
+constructor(duckdb: DuckDB);
+```
+
+## Parameters
+
+| Parameter | Type                              | Description                                               |
+| --------- | --------------------------------- | --------------------------------------------------------- |
+| duckdb    | [DuckDB](./node-duckdb.duckdb.md) | [DuckDB](./node-duckdb.duckdb.md) instance to connect to. |
+
+## Example
+
+Initializing a connection:
+
+```
+import { DuckDB } from "node-duckdb";
+const db = new DuckDB();
+const connection = new Connection(db);
+
+```

docs/api/node-duckdb.connection.close.md

@@ -0,0 +1,21 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Node-DuckDB API](./node-duckdb.md) &gt; [Connection](./node-duckdb.connection.md) &gt; [close](./node-duckdb.connection.close.md)
+
+## Connection.close() method
+
+Close the connection (also closes all [ResultStream](./node-duckdb.resultstream.md) or [ResultIterator](./node-duckdb.resultiterator.md) objects associated with this connection).
+
+<b>Signature:</b>
+
+```typescript
+close(): void;
+```
+
+<b>Returns:</b>
+
+void
+
+## Remarks
+
+Even though GC will automatically destroy the Connection object at some point, DuckDB data is stored in the native address space, not the V8 heap, meaning you can easily have a Node.js process taking gigabytes of memory (more than the default heap size for Node.js) with V8 not triggering GC. So, definitely think about manually calling `close()`<!-- -->.

docs/api/node-duckdb.connection.execute.md

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+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Node-DuckDB API](./node-duckdb.md) &gt; [Connection](./node-duckdb.connection.md) &gt; [execute](./node-duckdb.connection.execute.md)
+
+## Connection.execute() method
+
+Asynchronously executes the query and returns a node.js stream that wraps the result set.
+
+<b>Signature:</b>
+
+```typescript
+execute<T>(command: string, options?: IExecuteOptions): Promise<ResultStream<T>>;
+```
+
+## Parameters
+
+| Parameter | Type                                                | Description                                                                         |
+| --------- | --------------------------------------------------- | ----------------------------------------------------------------------------------- |
+| command   | string                                              | SQL command to execute                                                              |
+| options   | [IExecuteOptions](./node-duckdb.iexecuteoptions.md) | optional options object of type [IExecuteOptions](./node-duckdb.iexecuteoptions.md) |
+
+<b>Returns:</b>
+
+Promise&lt;[ResultStream](./node-duckdb.resultstream.md)<!-- -->&lt;T&gt;&gt;
+
+## Example
+
+Streaming results of a DuckDB query into a CSV file:
+
+```
+import { Connection, DuckDB, RowResultFormat } from "node-duckdb";
+import { createWriteStream } from "fs";
+import { Transform } from "stream";
+class ArrayToCsvTransform extends Transform {
+    constructor() {
+       super({objectMode: true})
+   }
+   _transform(chunk: any[], _encoding: string, callback: any) {
+       this.push(chunk.join(",") + '\n');
+       callback();
+   }
+}
+
+async function outputToFileAsCsv() {
+    const db = new DuckDB();
+    const connection = new Connection(db);
+    await connection.execute("CREATE TABLE people(id INTEGER, name VARCHAR);");
+    await connection.execute("INSERT INTO people VALUES (1, 'Mark'), (2, 'Hannes'), (3, 'Bob');");
+    const resultStream = await connection.execute("SELECT * FROM people;", {rowResultFormat: RowResultFormat.Array});
+    const transformToCsvStream = new ArrayToCsvTransform();
+    const writeStream = createWriteStream("my-people-output");
+    resultStream.pipe(transformToCsvStream).pipe(writeStream);
+}
+outputToFileAsCsv();
+
+```

docs/api/node-duckdb.connection.executeiterator.md

@@ -0,0 +1,61 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Node-DuckDB API](./node-duckdb.md) &gt; [Connection](./node-duckdb.connection.md) &gt; [executeIterator](./node-duckdb.connection.executeiterator.md)
+
+## Connection.executeIterator() method
+
+Asynchronously executes the query and returns an iterator that points to the first result in the result set.
+
+<b>Signature:</b>
+
+```typescript
+executeIterator<T>(command: string, options?: IExecuteOptions): Promise<ResultIterator<T>>;
+```
+
+## Parameters
+
+| Parameter | Type                                                | Description                                                                         |
+| --------- | --------------------------------------------------- | ----------------------------------------------------------------------------------- |
+| command   | string                                              | SQL command to execute                                                              |
+| options   | [IExecuteOptions](./node-duckdb.iexecuteoptions.md) | optional options object of type [IExecuteOptions](./node-duckdb.iexecuteoptions.md) |
+
+<b>Returns:</b>
+
+Promise&lt;[ResultIterator](./node-duckdb.resultiterator.md)<!-- -->&lt;T&gt;&gt;
+
+## Example 1
+
+Printing rows:
+
+```
+import { Connection, DuckDB, RowResultFormat } from "node-duckdb";
+async function queryDatabaseWithIterator() {
+  const db = new DuckDB();
+  const connection = new Connection(db);
+  await connection.executeIterator("CREATE TABLE people(id INTEGER, name VARCHAR);");
+  await connection.executeIterator("INSERT INTO people VALUES (1, 'Mark'), (2, 'Hannes'), (3, 'Bob');");
+  const result = await connection.executeIterator("SELECT * FROM people;");
+  // print the first row
+  console.log(result.fetchRow());
+  // print the rest of the rows
+  console.log(result.fetchAllRows());
+  const result2 = await connection.executeIterator("SELECT * FROM people;", {rowResultFormat: RowResultFormat.Array});
+  console.log(result2.fetchAllRows());
+  connection.close();
+  db.close();
+}
+queryDatabaseWithIterator();
+
+```
+
+## Example 2
+
+Providing generics type:
+
+```
+const result = await connection.executeIterator<number[]>(`SELECT CAST(1 AS TINYINT)`, {
+ rowResultFormat: RowResultFormat.Array,
+});
+expect(result.fetchRow()).toMatchObject([1]);
+
+```