Align

const alignPos = {
    'middle': [0, 0],
    'middle-right': [1, 0],
    'top-right': [1, 1],
    'top-middle': [0, 1],
    'top-left': [-1, 1],
    'middle-left': [-1, 0],
    'bottom-left': [-1, -1],
    'bottom-middle': [0, -1],
    'bottom-right': [1, -1]
}
const aligns = Object.keys(alignPos)

const initNode = canvas.node(1).add({
    shape: 'rect',
    size: [140, 80],
    labels: { 0: { remove: true } }
})

initNode.labels(aligns).data(aligns).add({
    align: k => k,
    radius: 0,
    color: 'white'
})
initNode.labels(aligns)
    .data(Object.values(alignPos))
    .pos(p => [
          p[0] === 1 ? 'x - 8' : p[0] === -1 ? '-x + 8' : 0,
          p[1] === 1 ? 'y - 8' : p[1] === -1 ? '-y + 8' : 0
    ])