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9 | const modernBrowserVersions = require('./modern-browser-versions.js');
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36 | module.exports = function getBabelConfig(opts /*: BabelConfigOpts */) {
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37 | const {target, plugins, presets} = opts;
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38 |
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39 |
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40 | let envPresetOpts = {
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41 | useBuiltIns: 'entry',
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42 | corejs: '3.0.0',
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43 | };
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44 |
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45 |
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46 | let config = {
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47 | plugins: [
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48 | require.resolve('@babel/plugin-syntax-dynamic-import'),
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49 | [
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50 | require.resolve('@rtsao/plugin-proposal-class-properties'),
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51 | {loose: false},
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52 | ],
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53 | opts.dev &&
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54 | require.resolve('babel-plugin-transform-styletron-display-name'),
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55 | ].filter(Boolean),
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56 | presets: [[require.resolve('@babel/preset-env'), envPresetOpts]],
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57 | babelrc: false,
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58 | };
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59 |
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60 | if (opts.specOnly === false) {
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61 | let {jsx, assumeNoImportSideEffects, dev, fusionTransforms} = opts;
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62 | if (!jsx) {
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63 | jsx = {};
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64 | }
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65 | config.presets.push([
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66 | require.resolve('@babel/preset-react'),
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67 | {
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68 | pragma: jsx.pragma,
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69 | pragmaFrag: jsx.pragmaFrag,
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70 | development: dev,
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71 | },
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72 | ]);
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73 | config.plugins.unshift(
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74 | require.resolve('@babel/plugin-transform-flow-strip-types')
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75 | );
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76 | if (fusionTransforms) {
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77 | config.presets.push([fusionPreset, {target, assumeNoImportSideEffects}]);
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78 | } else {
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79 | config.plugins.push(require.resolve('./babel-plugins/babel-plugin-gql'));
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80 | }
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81 | }
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82 |
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83 | if (target === 'node-native') {
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84 | envPresetOpts.modules = 'commonjs';
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85 | envPresetOpts.targets = {
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86 | node: 'current',
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87 | };
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88 | config.plugins.push(require.resolve('babel-plugin-dynamic-import-node'));
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89 | } else if (target === 'node-bundled') {
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90 | envPresetOpts.modules = false;
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91 | envPresetOpts.targets = {
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92 | node: 'current',
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93 | };
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94 | } else if (target === 'browser-modern') {
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95 | envPresetOpts.modules = false;
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96 | envPresetOpts.targets = modernBrowserVersions;
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97 | envPresetOpts.useBuiltIns = 'entry';
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98 | } else if (target === 'browser-legacy') {
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99 | envPresetOpts.modules = false;
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100 | envPresetOpts.targets = {
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101 | ie: 9,
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102 | };
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103 | }
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104 |
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105 | if (plugins) {
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106 |
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107 | config.plugins.unshift(...plugins);
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108 | }
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109 |
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110 | if (presets) {
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111 |
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112 | config.presets.push(...presets);
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113 | }
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114 |
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115 | return config;
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116 | };
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130 |
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131 |
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132 | function fusionPreset(
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133 | context /*: any */,
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134 | {target, assumeNoImportSideEffects} /*: FusionPresetOpts */
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135 | ) {
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136 | const targetEnv =
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137 | target === 'node-native' || target === 'node-bundled' ? 'node' : 'browser';
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138 |
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139 | return {
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140 | plugins: [
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141 | require.resolve('./babel-plugins/babel-plugin-gql'),
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142 | require.resolve('./babel-plugins/babel-plugin-asseturl'),
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143 | require.resolve('./babel-plugins/babel-plugin-pure-create-plugin'),
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144 | require.resolve('./babel-plugins/babel-plugin-sync-chunk-ids'),
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145 | require.resolve('./babel-plugins/babel-plugin-sw'),
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146 | require.resolve('./babel-plugins/babel-plugin-sync-chunk-paths'),
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147 | require.resolve('./babel-plugins/babel-plugin-chunkid'),
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148 | require.resolve('./babel-plugins/babel-plugin-workerurl'),
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149 | [
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150 | require.resolve('babel-plugin-transform-cup-globals'),
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151 | {target: targetEnv},
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152 | ],
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153 | assumeNoImportSideEffects && [
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154 | require.resolve('babel-plugin-transform-prune-unused-imports'),
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155 | {
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156 | falsyExpressions:
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157 | targetEnv === 'node' ? ['__BROWSER__'] : ['__NODE__'],
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158 | },
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159 | ],
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160 | ].filter(Boolean),
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161 | };
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162 | }
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