Add generic type annotations for Statement and Database get/all/each methods callback rows

[stevescruz]

Description

Small change, but some developers enjoy working with generics over the any type when using TypeScript.

Added Generics type annotations for the following methods:

• Statement.get
• Statement.all
• Statement.each
• Database.get
• Database.all
• Database.each

Backwards Compatibility

This will not break existing TypeScript code. It will still be possible to directly add type annotations to the row/rows.

Examples:

Take into consideration the following TypeScript code:

importsqlite3from"sqlite3";interfaceIUser{id: string;name: string;email: string;}constdb=newsqlite3.Database("./test.db");constcreateTableQuery=`CREATE TABLE IF NOT EXISTS users ( id TEXT PRIMARY KEY NOT NULL, name TEXT NOT NULL, email TEXT NOT NULL, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP)`;

How type annotations currently works:
NOTE: this will still work after the code changes.

constquery="SELECT * FROM users";db.all(query,[],(err,rows: IUser[])=>{if(err){console.error(err.message);}else{console.log(rows[1].email);}});

Now you will be able to:

constquery="SELECT * FROM users";db.all<IUser>(query,[],(err,rows)=>{if(err){console.error(err.message);}else{console.log(rows[1].email);}});

[stevescruz]

@daniellockyer thanks for running the CI pipeline.
We can add the "types" label to this PR.

[daniellockyer]

@stevescruz Nice, thanks!