@aisino/cli-plugin-unit-jest/presets/typescript/jest-preset.js

unit-jest plugin for vue-cli

const deepmerge = require('deepmerge')
const defaultPreset = require('../default/jest-preset')

module.exports = deepmerge(
  defaultPreset,
  {
    moduleFileExtensions: ['ts', 'tsx'],
    transform: {
      '^.+\\.tsx?$': require.resolve('ts-jest')
    }
  }
)