| 1 | module.exports = function(api) { |
| 2 | var validEnv = ['development', 'test', 'production'] |
| 3 | var currentEnv = api.env() |
| 4 | var isDevelopmentEnv = api.env('development') |
| 5 | var isProductionEnv = api.env('production') |
| 6 | var isTestEnv = api.env('test') |
| 7 | |
| 8 | if (!validEnv.includes(currentEnv)) { |
| 9 | throw new Error( |
| 10 | 'Please specify a valid `NODE_ENV` or ' + |
| 11 | '`BABEL_ENV` environment variables. Valid values are "development", ' + |
| 12 | '"test", and "production". Instead, received: ' + |
| 13 | JSON.stringify(currentEnv) + |
| 14 | '.' |
| 15 | ) |
| 16 | } |
| 17 | |
| 18 | return { |
| 19 | presets: [ |
| 20 | isTestEnv && [ |
| 21 | '@babel/preset-env', |
| 22 | { |
| 23 | targets: { |
| 24 | node: 'current' |
| 25 | } |
| 26 | } |
| 27 | ], |
| 28 | (isProductionEnv || isDevelopmentEnv) && [ |
| 29 | '@babel/preset-env', |
| 30 | { |
| 31 | forceAllTransforms: true, |
| 32 | useBuiltIns: 'entry', |
| 33 | corejs: 3, |
| 34 | modules: false, |
| 35 | exclude: ['transform-typeof-symbol'] |
| 36 | } |
| 37 | ] |
| 38 | ].filter(Boolean), |
| 39 | plugins: [ |
| 40 | 'babel-plugin-macros', |
| 41 | '@babel/plugin-syntax-dynamic-import', |
| 42 | isTestEnv && 'babel-plugin-dynamic-import-node', |
| 43 | '@babel/plugin-transform-destructuring', |
| 44 | [ |
| 45 | '@babel/plugin-proposal-class-properties', |
| 46 | { |
| 47 | loose: true |
| 48 | } |
| 49 | ], |
| 50 | [ |
| 51 | '@babel/plugin-proposal-object-rest-spread', |
| 52 | { |
| 53 | useBuiltIns: true |
| 54 | } |
| 55 | ], |
| 56 | [ |
| 57 | '@babel/plugin-proposal-private-methods', |
| 58 | { |
| 59 | loose: true |
| 60 | } |
| 61 | ], |
| 62 | [ |
| 63 | '@babel/plugin-proposal-private-property-in-object', |
| 64 | { |
| 65 | loose: true |
| 66 | } |
| 67 | ], |
| 68 | [ |
| 69 | '@babel/plugin-transform-runtime', |
| 70 | { |
| 71 | helpers: false |
| 72 | } |
| 73 | ], |
| 74 | [ |
| 75 | '@babel/plugin-transform-regenerator', |
| 76 | { |
| 77 | async: false |
| 78 | } |
| 79 | ] |
| 80 | ].filter(Boolean) |
| 81 | } |
| 82 | } |