28 lines
717 B
TypeScript
28 lines
717 B
TypeScript
import { declare } from "@babel/helper-plugin-utils";
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import syntaxThrowExpressions from "@babel/plugin-syntax-throw-expressions";
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import { types as t } from "@babel/core";
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export default declare(api => {
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api.assertVersion(7);
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return {
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name: "proposal-throw-expressions",
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inherits: syntaxThrowExpressions,
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visitor: {
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UnaryExpression(path) {
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const { operator, argument } = path.node;
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if (operator !== "throw") return;
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const arrow = t.functionExpression(
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null,
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[t.identifier("e")],
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t.blockStatement([t.throwStatement(t.identifier("e"))]),
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);
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path.replaceWith(t.callExpression(arrow, [argument]));
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},
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},
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};
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});
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