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//@noflow
const {resolve: resolvePath} = require('path')
const resolveSource = path => resolvePath(__dirname, 'src', path)
module.exports = api => {  // api && api.cache && api.cache.never && api.cache.never()  const env = api.cache(() => process.env.NODE_ENV)  const isBuild = !!process.env.IS_BUILD  const alias = {    'effector/effect': resolveSource('effect'),    'effector/event': resolveSource('event'),    'effector/store': resolveSource('store'),    'effector/domain': resolveSource('domain'),    'effector/graphite': resolveSource('graphite'),    'effector/fixtures': resolveSource('fixtures'),    'effector/stdlib': resolveSource('stdlib'),    'effector/perf': resolveSource('perf'),    'effector/flags': resolveSource(isBuild ? 'flags.prod' : 'flags.dev'),    warning: resolveSource('warning'),    invariant: resolveSource('invariant'),    'effector-react': resolveSource('react'),    'effector-vue': resolveSource('vue'),  }  if (process.env.NODE_ENV === 'test') {    alias.effector = resolvePath(__dirname, 'src')  }  const plugins = [    '@babel/plugin-proposal-export-namespace-from',    '@babel/plugin-proposal-optional-chaining',    '@babel/plugin-proposal-nullish-coalescing-operator',    ['@babel/plugin-proposal-class-properties', {loose: true}],    'macros',    [      'babel-plugin-module-resolver',      {        alias,      },    ],  ]
  const presets = [    '@babel/preset-flow',    '@babel/preset-react',    [      '@babel/preset-env',      {        loose: true,        useBuiltIns: false,        modules: false,        shippedProposals: true,        targets: {          node: '10',          browsers: [            'last 2 Chrome versions',            'last 2 Firefox versions',            'last 2 Safari versions',          ],        },      },    ],  ]
  const overrides = [    {      test(filename) {        return filename.includes('__tests__')      },      plugins: ['./src/babel/babel-plugin'],    },  ]
  if (process.env.NODE_ENV === 'test' || process.env.IS_SERVER != null) {    plugins.push('@babel/plugin-transform-modules-commonjs')  }
  return {plugins, presets, overrides, sourceMaps: true}}