forked from babel/babel
/
index.js
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/
index.js
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import { declare } from "@babel/helper-plugin-utils";
export default declare((api, options) => {
api.assertVersion(7);
const { legacy = false } = options;
if (typeof legacy !== "boolean") {
throw new Error("'legacy' must be a boolean.");
}
const { decoratorsBeforeExport } = options;
if (decoratorsBeforeExport === undefined) {
if (!legacy) {
throw new Error(
"The '@babel/plugin-syntax-decorators' plugin requires a" +
" 'decoratorsBeforeExport' option, whose value must be a boolean." +
" If you want to use the legacy decorators semantics, you can set" +
" the 'legacy: true' option.",
);
}
} else {
if (legacy) {
throw new Error(
"'decoratorsBeforeExport' can't be used with legacy decorators.",
);
}
if (typeof decoratorsBeforeExport !== "boolean") {
throw new Error("'decoratorsBeforeExport' must be a boolean.");
}
}
return {
name: "syntax-decorators",
manipulateOptions(opts, parserOpts) {
parserOpts.plugins.push(
legacy
? "decorators-legacy"
: ["decorators", { decoratorsBeforeExport }],
);
},
};
});