simple-multithread

Based on Web Workers supported by all modern browsers.

TypeScript-ready.

Example 1

Multithreading is simple

async function main() {
    const args = [ 10, 20 ];
    const result = await execAsync((a, b) => {
        return a + b;
    }, args);
    console.log(result); // 30
}

Example 2

// import function execAsync(func, args)

function testCase() {
	let total = 0;
	for(let i = 0; i < 99999999; ++i) {
		total += Math.random() * 2;
    }
	return total;
}

async function test1() {
	console.time('single thread');
	testCase();
	testCase();
	testCase();
	console.timeEnd('single thread');
}

async function test2() {
	console.time('multi thread');
	await Promise.all([
		execAsync(testCase, []),
		execAsync(testCase, []),
		execAsync(testCase, [])
	]);
	console.timeEnd('multi thread');
}

Results

single thread: 3907.119140625ms
multi thread: 2017.375732421875ms

API

async function execAsync<ReturnT>(thread: (...args: any[]) => ReturnT, args: any[]): Promise<ReturnT>;

Limitations

Only plain type values for arguments.
No access to variables in scope, only arguments.
No native functions or functions defined in other origin.

Working on

• Callback support

PS

There is much complex library - threads.