message: preview parsed csv data
diff: import React from "react";
  import { ScrollSync, ScrollSyncPane } from "react-scroll-sync";
  import _find from "lodash/find";
  -import { parseJSON } from "date-fns";
  import { makeStyles, createStyles, Grid } from "@material-ui/core";
  @@ -83,6 +82,7 @@ export default function Step4Preview({ csvData, config }: IStepProps) {
  const columns = config.pairs.map(({ csvKey, columnKey }) => ({
  csvKey,
  + columnKey,
  ...(tableState!.columns[columnKey] ??
  _find(config.newColumns, { key: columnKey }) ??
  {}),
  @@ -105,17 +105,13 @@ export default function Step4Preview({ csvData, config }: IStepProps) {
  <ScrollSyncPane>
  <Grid container wrap="nowrap" className={classes.data}>
  - {columns.map(({ csvKey, name, type }) => (
  + {columns.map(({ csvKey, name, columnKey, type }) => (
  <Grid item key={csvKey} className={classes.column}>
  {csvData.rows.map((row, i) => (
  <Cell
  key={csvKey + i}
  - field={csvKey}
  - value={
  - type === FieldType.date || type === FieldType.dateTime
  - ? parseJSON(row[csvKey]).getTime()
  - : row[csvKey]
  - }
  + field={columnKey}
  + value={row[columnKey]}
  type={type}
  name={name}
  />
  