Traverse

canvas.nodes([1, 2, 3, 4]).add()
canvas.edges([[1, 2], [2, 3], [3, 4], [4, 1]]).add()
canvas.pause(0.5)

canvas.edge([1, 2]).traverse('red').pause(0.5)
canvas.edge([2, 3]).traverse('green').pause(0.5)
canvas.edge([3, 4]).traverse('blue').pause(0.5)
canvas.edge([4, 1]).traverse('yellow')

const source = 1
canvas.nodes([source, 2, 3, 4]).add()

const edges = [[source, 2], [source, 3], [4, source]]
canvas.edges(edges).add({ directed: true })
canvas.pause(0.5)

canvas.node(source).highlight(1).color('red').size('1.2x')
canvas.pause(0.5)
canvas.edges(edges).highlight(0).traverse('red', source)
canvas.pause(1.5)

canvas.nodes([2, 3, 4]).highlight(1).color('green').size('1.2x')
canvas.pause(0.5)
canvas.edges(edges).highlight(0).traverse(
    'green',
    e => e[0] === source ? e[1] : e[0]
)