Fixed & Draggable

for (let i = 0; i < 5; i++) {
    canvas.node(`s.${i}`).add({
        pos: [-40, (i - 2) * 35],
        color: 'red',
        fixed: true,
        draggable: false,
        labels: { 0: { text: i } }
    })
    
    canvas.node(`t.${i}`).add({
        pos: [40, (i - 2) * 35],
        color: 'green',
        fixed: true,
        draggable: false,
        labels: { 0: { text: i } }
    })
}

const connections = [
    [0, 1], [0, 3],
    [1, 0], [1, 1], [1, 4],
    [2, 3], [2, 4],
    [3, 0], [3, 1], [3, 3], [3, 4],
    [4, 2], [4, 4]
]
const edgeIds = connections.map(([s, t]) => [`s.${s}`, `t.${t}`])

canvas.edges(edgeIds).add()