45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
import { declare } from "@babel/helper-plugin-utils";
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import syntaxDecorators from "@babel/plugin-syntax-decorators";
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import visitor from "./transformer";
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import legacyVisitor from "./transformer-legacy";
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export default declare((api, options) => {
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api.assertVersion(7);
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const { legacy = false } = options;
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if (typeof legacy !== "boolean") {
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throw new Error("'legacy' must be a boolean.");
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}
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const { decoratorsBeforeExport } = options;
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if (decoratorsBeforeExport === undefined) {
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if (!legacy) {
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throw new Error(
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"The decorators plugin requires a 'decoratorsBeforeExport' option," +
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" whose value must be a boolean. If you want to use the legacy" +
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" decorators semantics, you can set the 'legacy: true' option.",
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);
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}
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} else {
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if (legacy) {
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throw new Error(
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"'decoratorsBeforeExport' can't be used with legacy decorators.",
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);
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}
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if (typeof decoratorsBeforeExport !== "boolean") {
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throw new Error("'decoratorsBeforeExport' must be a boolean.");
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}
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}
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return {
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name: "proposal-decorators",
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inherits: syntaxDecorators,
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manipulateOptions({ generatorOpts }) {
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generatorOpts.decoratorsBeforeExport = decoratorsBeforeExport;
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},
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visitor: legacy ? legacyVisitor : visitor,
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};
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});
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