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babel.config.js
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babel.config.js
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const VALID_ENVIRONMENTS = ["development", "test", "production"];
module.exports = function (api) {
const currentEnv = api.env();
const isDevelopmentEnv = api.env("development");
const isProductionEnv = api.env("production");
const isTestEnv = api.env("test");
if (!VALID_ENVIRONMENTS.includes(currentEnv)) {
throw new Error(
"Please specify a valid `NODE_ENV` or `BABEL_ENV` environment variables. " +
"Valid values are \"development\", \"test\", and \"production\". " +
`Instead, received: ${JSON.stringify(currentEnv)}.`
);
}
return {
presets: [
isTestEnv
? [
"@babel/preset-env",
{ targets: { node: "current" }, modules: "commonjs" },
]
: [
"@babel/preset-env",
{
forceAllTransforms: isProductionEnv,
useBuiltIns: "entry",
corejs: "3.27.0",
modules: false,
},
],
["@babel/preset-react", { development: isDevelopmentEnv || isTestEnv }],
].filter(Boolean),
plugins: [
"babel-plugin-macros",
"@babel/plugin-transform-runtime",
isTestEnv
? "babel-plugin-dynamic-import-node" // tests run in node environment
: "@babel/plugin-syntax-dynamic-import",
["istanbul", { useInlineSourceMaps: false }],
isProductionEnv && [
"babel-plugin-transform-react-remove-prop-types",
{ removeImport: true },
],
].filter(Boolean),
};
};