Alpine Example: Column Sizing

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import Alpine from 'alpinejs'
import {
  FlexRender,
  columnResizingFeature,
  columnSizingFeature,
  createTable,
  tableFeatures,
} from '@tanstack/alpine-table'
import { makeData } from './makeData'
import './index.css'
import type { ColumnDef } from '@tanstack/alpine-table'
import type { Person } from './makeData'

const features = tableFeatures({
  columnSizingFeature,
  columnResizingFeature,
})

const columns: Array<ColumnDef<typeof features, Person>> = [
  {
    accessorKey: 'firstName',
    cell: (info) => info.getValue(),
  },
  {
    accessorFn: (row) => row.lastName,
    id: 'lastName',
    cell: (info) => info.getValue(),
    header: () => '<span>Last Name</span>',
  },
  {
    accessorKey: 'age',
    header: () => 'Age',
  },
  {
    accessorKey: 'visits',
    header: () => '<span>Visits</span>',
  },
  {
    accessorKey: 'status',
    header: 'Status',
  },
  {
    accessorKey: 'progress',
    header: 'Profile Progress',
  },
  {
    accessorKey: 'rank',
    header: 'Rank',
  },
  {
    accessorKey: 'createdAt',
    header: 'Created At',
  },
]

Alpine.data('table', () => {
  const local = Alpine.reactive({ data: makeData(1_000) })

  const table = createTable({
    features,
    columns,
    get data() {
      return local.data
    },
    columnResizeMode: 'onChange',
    columnResizeDirection: 'ltr',
    // initialState: { columnSizing: { firstName: 200 } }, // set column sizes on first render
    // atoms: { columnSizing: columnSizingAtom }, // preferred: own sizing state with an external atom
    // state: { columnSizing }, // classic controlled state; pair with onColumnSizingChange
    // onColumnSizingChange: setColumnSizing,
    debugTable: true,
    debugHeaders: true,
    debugColumns: true,
  })

  return {
    table,
    FlexRender,
    refreshData() {
      local.data = makeData(1_000)
    },
    stressTest() {
      local.data = makeData(1_000_000)
    },
  }
})

window.Alpine = Alpine
Alpine.start()